Including 3- and 4-Port Isolation Modules with 2- and 3-Plug ......November 1, 2008 Lit. No. 22373,...
Transcript of Including 3- and 4-Port Isolation Modules with 2- and 3-Plug ......November 1, 2008 Lit. No. 22373,...
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November 1, 2008Lit. No. 22373, Rev. 07
Including3- and 4-Port Isolation Modules with
2- and 3-Plug Systems and Relay Systems
SNOWPLOWS
ELECTRICAL SCHEMATICS GUIDE
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Preface .............................................................................................................. 4Lamp Types and Harness Connectors .............................................................. 5Electrical Connectors – 3-Plug Systems ........................................................... 6Electrical Connectors – 2-Plug Systems ........................................................... 7In-Line Adapter Instructions – 28027-2 ............................................................. 8Vehicle Harness with Relay – 29861 ................................................................. 9
3-Port Isolation Module Systems ................................................................ 10Headlamp Index .............................................................................................. 10Theory of Operation – Overview ..................................................................... 11Theory of Operation – White Label Non-DRL Module .................................... 12Theory of Operation – Green Label DRL Module ........................................... 13Theory of Operation – Blue Label DRL Module .............................................. 14Electrical Schematic – 3-Plug Straight Blade Snowplows (11-Pin) ................. 15Electrical Schematic – 3-Plug MVP® Snowplows ........................................... 16Electrical Schematic – 3-Plug Straight Blade Snowplows
with Central Hydraulics ............................................................................. 17Electrical Schematic – 2-Plug MVP PLUS™ Snowplows (11-Pin) .................. 18Electrical Schematic – 2-Plug WIDE-OUT™ Snowplows (11-Pin) .................. 19Headlamp Wiring ............................................................................................. 20
TABLE OF CONTENTS
4-Port Isolation Module Systems ................................................................ 28Headlamp Index .............................................................................................. 28Theory of Operation – Overview ..................................................................... 294-Port Isolation Module System ...................................................................... 304-Port Isolation Module System – Adapter Kits .............................................. 31Confi guration Plug Instructions – 26421 ......................................................... 32Electrical Schematic – 3-Plug Straight Blade Snowplows (3-Pin) .................. 33Electrical Schematic – 3-Plug MVP Snowplows (7-Pin) .................................34Electrical Schematic – 2-Plug MVP PLUS Snowplows (11-Pin) ...................... 35Electrical Schematic – 2-Plug WIDE-OUT Snowplows (11-Pin) ..................... 36Headlamp Wiring ............................................................................................. 37
Relay System ................................................................................................. 47Relay System – Headlamp Index .................................................................... 47Relay System – Electrical Connectors ............................................................ 497-Pin Harness .................................................................................................. 50Electrical Schematic – 9-Pin Vehicle Harness – Revision 10 and Later ......... 53Electrical Schematic – 9-Pin Vehicle Harness – Revision 1–9 .......................549-Pin Harness ................................................................................................. 55Electrical Schematic – 12-Pin Vehicle Harness – Revision 8 and Later ......... 71Electrical Schematic – 12-Pin Vehicle Harness – Revision 1–7 ..................... 7212-Pin Harness ................................................................................................ 73MVP Electrical Schematic ............................................................................... 87MVP Electrical Schematic – For 2003 GM and Dodge ................................... 88Wiring Diagram – 61185 Park or Turn Harness Kit ......................................... 89Electrical Legend and Wire Colors ..................................................................90
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INTRODUCTION
The purpose of this book is to provide the trained mechanic with a comprehensive reference to assist in diagnosis and repair of WESTERN® snowplow electrical systems. It contains schematics, diagrams and charts which supply information for the various types of vehicle and plow headlamp systems. Although intended primarily as a diagnostic tool for headlamp systems, the hydraulic system circuitry is also included to show the complete electrical system.
EARLY REVISION VEHICLE HARNESSES (RELAY SYSTEM)
All 9- and 12-pin vehicle harnesses are labeled with a white tag indicating the harness part number and revision level. Early 9-pin harness revisions 1–9 and 12-pin harness revisions 1–7 have a ground circuit in which the control, motor relay, and headlamp relays all ground through the 9- or 12-pin connector. Some of these early revision harnesses also have a diode in the ground wire to the headlamp relays. Complete 9- and 12-pin system schematics showing this early revision ground confi guration are included in the relay section of the book. These schematics are for early revision harnesses using only the solenoid control. If a handheld control has been installed, the ground circuit has been modifi ed into the later revision confi guration, in which only the headlamp relays ground through the 9- or 12-pin connector and the control and motor relay ground separately to the battery. Early revision harnesses may be easily identifi ed by a single black/orange wire on one of the motor relay primary terminals which does not continue on to the negative battery terminal. All vehicle side schematics in this book show only the later revision circuitry.
GROUNDS AND COMMONS
Notice that "ground" on the harness connectors may be referred to as "common". Most domestic vehicles use a high side drive headlamp system in which power is supplied by the switch to either headlamp. The headlamps have a common connection to ground. Some import vehicles as well as 1999 to 2002 Chevrolet/GMC, Dodge use a low side drive headlamp system in which power is supplied to the common connection of the headlamps. Ground is supplied to either headlamp by the switch.
Whether the terminal in the headlamp harness is actually a negative ground or a positive 12-volt common depends on what type of vehicle headlamp system it is installed into. Prior to the publication of this book, all Western Products electrical schematics showed "ground" whether or not it was a true ground or a 12-volt common. Some of these early schematics appear in this book. Newer schematics of low side drive systems will show the more accurate term "common" where appropriate.
HOW TO USE THIS BOOK
Use the information in the Headlamp Index to locate the electrical schematic for the vehicle. All headlamp harnesses are tagged with the harness part number. The schematic is an abstract drawing showing the purpose of each component in the system. Where possible, component locations are indicated by enclosures on the schematic. The Lamp Type, Wire Color and Connector Identifi cation charts and diagrams will give specifi c wire colors, their function and locations in connectors. Any special notes are found in the upper right corner of the schematic. Further information and a specifi c troubleshooting guide may be found in the appropriate Mechanic's Guides.
The 9- and 12-pin Vehicle Side schematics (relay system) contain all vehicle headlamp and harness types. The 7-pin Vehicle Side Schematics show only a few representatives applications. For other 7-pin vehicle headlamp and harness types, refer to the corresponding 9-pin Vehicle Side schematic and use only the headlamp circuitry.
PREFACE
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LAMP TYPES AND HARNESS CONNECTORS
NOTE: The lamp type is usually embossed in the headlamp lens.
NOTE: Blue ground wires may be LT or DK BLU, w/ or w/o WHT stripe, depending on harness.
HIGHGROUND
LOW
HB1
LOWGROUND
BLU
E (G
ND
)O
RA
NG
E (L
OW
)R
ED
(HIG
H)
YE
LLO
W (l
OW
)B
LUE
(GN
D)
GR
EE
N (H
IGH
)
LOWGROUND
HIGH
GR
OU
ND
HIG
H
LOW
2E
BLU
E (G
ND
)
OR
AN
GE
(LO
W)
RE
D (H
IGH
)
YE
LLO
W (L
OW
)
GR
EE
N (H
IGH
)
BLU
E (G
ND
)
HB2, 2B/2D
GROUND
LOW
GROUND
HIGH
BLU
E (G
ND
)O
RA
NG
E (L
OW
)R
ED
(HIG
H)
GR
EE
N (H
IGH
)Y
ELL
OW
(LO
W)
BLU
E (G
ND
)
BLU
E (G
ND
)G
RE
EN
(HIG
H)
YE
LLO
W (L
OW
)
RE
D (H
IGH
)O
RA
NG
E (L
OW
)
BLU
E (G
ND
)
RE
D (H
IGH
)
BLU
E (G
ND
)
LOW
HIGH
GROUND1A/2A
GROUND
HIGH
HIGH LOW
COMMON
LOW
H13
OR
AN
GE
(LO
W)
GR
EE
N (H
IGH
)B
LUE
(CO
MM
ON
)
LT B
LUE
(CO
MM
ON
)R
ED
(HIG
H)
YE
LLO
W (L
OW
)
BLU
E (G
ND
)
RE
D (H
IGH
)
BLU
E (G
ND
)O
RA
NG
E (L
OW
)
YE
LLO
W (L
OW
)B
LUE
(GN
D)
BLU
E (G
ND
)G
RE
EN
(HIG
H)
OR
AN
GE
(LO
W)
RE
D (H
IGH
)
YE
LLO
W (L
OW
)
GR
EE
N (H
IGH
)
BLU
E (G
ND
)
BLU
E (G
ND
)
GR
EE
N (H
IGH
)B
LUE
(GN
D)
YE
LLO
W (L
OW
)B
LUE
(GN
D)
YE
LLO
W (L
OW
)
BLU
E (G
ND
)
BLU
E (G
ND
)R
ED
(HIG
H)
RE
D (H
IGH
)
OR
AN
GE
(LO
W)
YE
LLO
W (L
OW
)
GR
EE
N (H
IGH
)
BLU
E(C
OM
MO
N 1
2V)
BLU
E o
r PIN
K(C
OM
MO
N 1
2V)
BLU
E(C
OM
MO
N 1
2V)
BLU
E(C
OM
MO
N 1
2V)
DK
BLU
E (H
IGH
)
DK
BLU
E (H
IGH
)
DK
BLU
E(C
OM
MO
N 1
2V)
DK
BLU
E (L
OW
)D
K B
LUE
(CO
MM
ON
12V
)
DK
BLU
E (L
OW
)D
K B
LUE
(CO
MM
ON
12V
)
DK
BLU
E(C
OM
MO
N 1
2V)
HB-3 / HB-4 HB-5 LF / UF
LOWGROUND
HIGH
LOWGROUND
HIGH
HIGH
GROUND
LOW LOWGROUND
LOW GROUNDHIGHGROUNDHIGH
COMMON (12V)
HIGH
LOW
HIGH COMMON(12V)
LOW
HB-3 / HB-4(Lowside Drive System)
COMMON (12V)
HIGH
LOW
HIGHCOMMON(12V)
LOW
HB-3 / H11
HeadlampType
BulbType
HeadlampType
BulbType
LF H4703 H13 9008UF H4701 HB-1 90041A1 H4851 HB-2 90032A1 H4652 (GMC/Chevy) HB-3 90052A1 H4656 (Mitsubishi) HB-4 90062B1 H6054 HB-5 90072D1 H6024 H11 H112E1 H6545
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4-PORT & 3-PORT ISOLATION MODULE – ELECTRICAL CONNECTORS – 3-PLUG SYSTEMS
1 2 3 4 5 6
7 8 10 119
Plow (End View)
(Sockets)
1 2 3 4 5 6
7 8 10 119
Plow (End View)
(Sockets)
Plow (End View)
1 2 3 4 5 6
7 8 10 119
(Pins)
Plow Control Harnesses
Plow Lighting Harness
Solenoid Control Connectors
MVP® Blade Control Connectors
Control Side(end view)
(pins)
123
54
6
148
12
37
1114
(Front View)
123
54
6
Vehicle Side(end view)
(sockets)
MVP Blade to Straight Blade Adapter Kit PN 66760K
Pin No. Solenoid Control Wire Color Only1 White2 Green3 Brown4 Black5 Blue6 Red
Pin No. Wire Color Control Function1 Red/Yellow +12V2 Light Green Valve S23 Orange/Black Ground4 Brown/Red Motor Relay5 Light Blue Valve S36 White/Yellow Valve S1
Pin No. Wire Color1 Light Blue w/Orange Stripe2 Blue w/Orange Stripe3 Black w/White Stripe4 Light Green5 Light Blue6 White w/Yellow Stripe7 Brown w/Red Stripe8 Red w/Yellow Stripe9 Orange w/Black Stripe10 Brown w/Green Stripe
3-PinPin No. Wire Color Control Function
1 — —2 — —3 Light Blue Valve S34 Light Green Valve S25 — —6 — —7 — —8 — —9 White/Yellow Valve S110 — —11 — —
7-PinPin No. Wire Color Control Function
1 Black/White Valve S42 — —3 Light Blue Valve S24 Light Green Valve S35 — —6 Red +12V7 — —8 Blue/Orange Valve S59 White/Yellow Valve S110 Lt Blue/Orange Valve S611 — —
11-PinPin No. Wire Color Control Function
1 Black/White PS Low Beam2 Black/Orange Ground3 White/Yellow PS High Beam4 White DS High Beam5 Blue/Orange PS Common6 Black DS Low Beam7 Black/Orange Ground8 Gray Left Directional9 Purple Right Directional10 Brown Parking Lights11 Light Blue DS Common
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4-PORT & 3-PORT ISOLATION MODULE – ELECTRICAL CONNECTORS – 2-PLUG SYSTEMS
1
2
4
3
Plow (End View)
(Sockets)
Plow (End View)
1 2 3 4 5 6
7 8 10 119
(Pins)
Multiplex Harnesses
Plow Lighting Harness
Solenoid Control Connectors
Control Side(end view)
(pins)
1
4
2
3
4
Vehicle Side(end view)
(sockets)
2 1
3
Pin No. Solenoid Control Wire Color Only1 Red2 Green3 White4 Black
Pin No. Wire Color Control Function1 Red +12V2 Red Signal3 Black Signal4 Black Ground
4-PinPin No. Wire Color Control Function
1 Red +12V2 Black Ground3 Tan Signal4 White Signal
11-PinPin No. Wire Color Control Function
1 Black/White PS Low Beam2 Black/Orange Ground3 White/Yellow PS High Beam4 White DS High Beam5 Blue/Orange PS Common6 Black DS Low Beam7 Black/Orange Ground8 Gray Left Directional9 Purple Right Directional10 Brown Parking Lights11 Light Blue DS Common
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IN-LINE ADAPTER INSTRUCTIONS – 28027-2
CAUTIONThis adapter is required for vehicles equipped with a 4-headlamp lighting system that illuminates the low and high beams when in high-beam mode. This adapter prevents the low beams on the snowplow from illuminating when placed in high beam.
GRN
YEL
YEL
ORN
GRN
GR
N
ORN Right LowBeam Relay
85
30
8687A
87
87
8586
30
87A
BLK
BLK
In-Line Adapter Relay Connections
Left LowBeam Relay
Terminals shown at 87 are used as insulators to prevent a circuit failure when relay is energized.
To NE
GA
TIVE
(–)B
attery Terminal
1 2 3 4
Vehicle ControlHarness
Plug-InHarnesses
Vehicle Lighting Harness
To NEGATIVE (–)Battery Terminal
Vehicle Lighting Harness
In-Line AdapterIn-Line Adapter
Plug-InHarness
To NEGATIVE (–)Battery Terminal
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VEHICLE LIGHTING HARNESS – 11-PIN
BLK
BRNLTBLU
PURGRYBLK/ORN
WHTBLU/ORN
WHT/YEL BLK/ORNBLK/WHT
LEFT HIGH BEAM OUT
LEFT TURN OUT
MODULE COM INRIGHT HIGH BEAM OUT
RIGHT TURN OUT
LEFT LOW BEAM OUT
RIGHT LOW BEAM OUT
GRY
A
PUR
JK
E
GH
F
CD
B
WHT/YEL
LTBLUBRN
BLU/ORN
WHTBLK
1011
6
89
7
54321
11-Pin Molded Plugs
BLK/WHT
BLK/ORN
PARK LAMP OUTLEFT HEADLAMP COMRIGHT HEADLAMP COM
BLK
/OR
N
4 4
65
65
1
32
1
32
RT LOW RELAY ASSEMBLY
K2
LT LOW
2
1
45
4
3
K1
5
1
2
44
3
SPLICESPLICE
BLK/WHT
BLK/ORNWHT
BLK
BLKBLK/WHT
Vehicle Lighting Harness – 11-Pin(PN 29861)
Relay Assembly (PN 29859)
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Pages Headlamp Type Harness Kit Harness Part #
20 HB-3/HB-4 29048 28253
21 H13 29049 28986
22 HB-1 or HB-5 29050 28930
23 2B/2D or HB-2 29051 28464
24 HB-3/HB-44-Pin Connectors 29052 28924
252B/2D or 1A/2A
5-Pin Connectors29053 29058
262B/2D
7-Pin Connectors29054 29270
27 HB-3/H11 29400-2 29499
3-PORT ISOLATION MODULE – HEADLAMP INDEX
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Overview
The Isolation Module acts as an electrical hub, automatically directing vehicle power to the appropriate vehicle or snowplow lighting devices, while also supplying battery power to the snowplow control.
The vehicle high and low beams enter and exit the Isolation Module through positions B (left side lighting) and position C (right side lighting). Park, turn, and DRL signals also enter through positions B and C.
The output of the vehicle high beam/low beam select switch is directed to
the Isolation Module via the plug-in harness. When the snowplow is not attached to the vehicle, the signal passes through the normally closed relay contacts to the vehicle headlamps. During this time, the Isolation Module is inactive, placing no current draw on the vehicle's electrical system.
With the snowplow attached, the Isolation Module is still inactive until either of the two following conditions are met: the vehicle parking lights are turned ON or the vehicle ignition switch is turned ON.
Turning ON the vehicle parking lights activates a series of relays, automatically transferring the vehicle high and low beams to the snowplow while supplying battery power directly to the snowplow parking lights. All snowplow lighting exits the Isolation Module through position A.
Turning ON the vehicle ignition switch energizes a snowplow control relay, supplying vehicle battery power directly to the control via the vehicle control harness and plug-in harness. The vehicle ignition switch also supplies power to the vehicle turn signals. Activating the vehicle turn signals energizes turn signal circuit, which supply vehicle battery power directly to the snowplow turn signals.
NOTE: References to "Left" and "Right" are correct for modules located on the driver's side of the vehicle. The reversible turn signal plug must be reversed for passenger-side installations.
Turn Signal Configuration Plug
Driver-Side Module Passenger-Side Module
GRN GRN
BLU BLU
BLU GRN
GRN BLU
3-PORT ISOLATION MODULE – THEORY OF OPERATION
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White Label Non-DRL Module(PN 29060)
Snowplow not attached to vehicle:
System is inactive. Vehicle lighting system functions normally. Reason: No ground to module.
Snowplow attached to vehicle:
System is inactive until either the switched accessory wire or the vehicle parking lights are activated. Vehicle and snowplow lighting systems function as outlined in the Theory of Operation Overview. Reason: ground path is established from battery common to Pin C on Port A of the 3-port module via the following harnesses: vehicle battery cable, vehicle control harness, adapter, plug-in harness, vehicle lighting harness and snowplow lighting harness.
• Activating a switched accessory wire (a key-controlled power source) applies battery voltage to the VACC input of the module, which energizes the coil of the control power relay (part of the 3-port module). Energizing the coil of the control power relay causes the relay contacts to shift from the "N.O." (normally opened) position to the "N.C." (normally closed) position, which supplies battery voltage to the snowplow control via the plug-in harness and the vehicle control harness. The switched accessory wire only controls battery voltage to the snowplow control.
• Activating the vehicle park light circuit applies battery voltage to the module park circuit input. The voltage is applied to a solid state power device, which causes the device to turn ON and apply battery voltage to the snowplow park lamp fi laments via the vehicle and snowplow lighting harnesses. Voltage is also applied to the module's high and low beam relay coils, which causes the relay contacts to shift from the "vehicle" to the "snowplow" position.
• With the four headlamp relays shifted to the "snowplow" position, the vehicle high and low beams are now directed to the snowplow headlamps via the vehicle and snowplow lighting harnesses. Toggling the dimmer switch between high and low beam will toggle the snowplow high and low beams.
3-PORT ISOLATION MODULE – THEORY OF OPERATION
• Activating the turn signal applies battery voltage to the module turn signal circuit input. The voltage is applied to a solid state power device, which causes the device to turn ON and apply battery voltage to the snowplow turn signal lamp fi laments via the vehicle and snowplow lighting harnesses.
• On vehicles equipped with DRLs—either integrated into the vehicle headlamps or separated into dedicated DRL lamps—this module will not turn OFF the vehicle DRLs or transfer them to the snowplow. DRLs will remain on the vehicle and operate as the vehicle manufacturer intended.
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Green Label DRL Module(PN 29070)
Snowplow not attached to vehicle:
System is inactive. Vehicle lighting system functions normally. Reason: No ground to module.
Snowplow attached to vehicle:
System is inactive until either the switched accessory wire or the vehicle parking lights are activated. Vehicle and snowplow lighting systems function as outlined in the Theory of Operation Overview. Reason: ground path is established from battery common to Pin C on Port A of the 3-port module via the following harnesses: vehicle battery cable, vehicle control harness, adapter, plug-in harness, vehicle lighting harness and snowplow lighting harness.
• Activating a switched accessory wire (a key-controlled power source) applies battery voltage to the VACC input of the module. A control circuit senses the voltage and energizes the coil of the control power relay (part of the 3-port module). Energizing the coil of the control
power relay causes the relay contacts to shift from the "N.O." (normally opened) position to the "N.C." (normally closed) position, which supplies battery voltage to the snowplow control via the plug-in harness and the vehicle control harness. The switched accessory wire only controls battery voltage to the snowplow control.
• Activating the vehicle park light circuit applies voltage to the module park circuit input. A control circuit senses the voltage and turns ON a solid state power device, which applies battery voltage to the snowplow park lamp fi laments via the vehicle and snowplow lighting harnesses.
• With the park light circuit energized, the control circuit monitors the vehicle high and low beam inputs. When battery voltage is sensed, the appropriate solid state power devices are turned ON, supplying battery voltage to the snowplow headlamps via the vehicle and snowplow lighting harnesses. Toggling the dimmer switch
between high and low beam will toggle the snowplow high and low beams.
• Activating the turn signal applies voltage to the module turn signal circuit input. A control circuit senses the voltage and turns ON a solid state power device, which applies battery voltage to the snowplow turn signal lamp fi laments via the vehicle and snowplow lighting harnesses.
• PN 29070 Only: On vehicles equipped with DRLs—either integrated into the vehicle headlamps or separated into dedicated DRL lamps—this module will not turn OFF the vehicle DRLs. The control circuit monitors the voltage level supplied by the vehicle to the vehicle high and low beams as well as the dedicated DRL inputs. When a lower voltage is sensed on either the high or low beam inputs or battery voltage is sensed on the turn signal or dedicated DRL inputs, the control circuit turns ON the snowplow
turn signal fi laments to operate as DRLs.
• PN 29070-1 Only: On vehicles equipped with DRLs integrated into the vehicle headlamps. Activation of the switched accessory wire (a key-controlled power source) Port C, Position C, applies battery voltage to the module's high and low beam relay coils, which causes the relay contacts to shift from the "vehicle" to the "snowplow" position. This module will transfer the vehicle headlamp DRLs to the snowplow (turns off vehicle DRLs).
• On vehicles equipped with dedicated DRL bulbs or vehicles using the turn signals as DRLs, this module will not turn OFF the vehicle bulbs. While the vehicle is in the DRL mode, this module will illuminate the snowplow light turn signal fi laments.
3-PORT ISOLATION MODULE – THEORY OF OPERATION
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Blue Label DRL Module(PN 29760-1)
Snowplow not attached to vehicle:
System is inactive. Vehicle lighting system functions normally. Reason: No ground to module.
Snowplow attached to vehicle:
System is inactive until either the switched accessory wire or the vehicle parking lights are activated. Vehicle and snowplow lighting systems function as outlined in the Theory of Operation Overview. Reason: ground path is established from battery common to Pin C on Port A of the 3-port module via the following harnesses: vehicle battery cable, vehicle control harness, adapter, plug-in harness, vehicle lighting harness and snowplow lighting harness.
• Activating a switched accessory wire (a key-controlled power source) applies battery voltage to the VACC input of the module, which energizes the coil of the control power relay (part of the 3-port module). Energizing the coil of the control power relay causes the relay contacts to shift from the "N.O." (normally opened) position to the "N.C." (normally closed) position, which supplies battery voltage to the snowplow control via the plug-in harness and the vehicle control harness.
• Activating the vehicle park light circuit applies battery voltage to the module park circuit input. The voltage is applied to a solid state power device, which causes the device to turn ON and apply battery voltage to the snowplow park lamp fi laments via the vehicle and snowplow lighting harnesses. Voltage is also applied to the module's high and low beam relay coils, which causes the relay contacts to shift from the "vehicle" to the "snowplow" position.
• With the four headlamp relays shifted to the "snowplow" position, the vehicle high and low beams are now directed to the snowplow headlamps via the vehicle and snowplow lighting harnesses. Toggling the dimmer switch between high and low beam will toggle the snowplow high and low beams.
• Activating the turn signal applies battery voltage to the module turn signal circuit input. The voltage is applied to a solid state power device, which causes the device to turn ON and apply battery voltage to the snowplow turn signal lamp fi laments via the vehicle and snowplow lighting harnesses.
• On vehicles equipped with DRLs integrated into the vehicle headlamps, activating a switched accessory wire (a key-controlled power source) applies battery voltage to the module's high and low beam relay coils, which causes the relay contacts to shift from the "vehicle" to the "snowplow" position. This module will transfer the vehicle DRLs to the snowplow.
3-PORT ISOLATION MODULE – THEORY OF OPERATION
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3-PORT ISOLATION MODULE – ELECTRICAL SCHEMATIC
3-PLUG STRAIGHT BLADE SNOWPLOWS (11-PIN)
NOTE: Labeling shown (left and right) is correct for modules located on the driver's side of the vehicle. The reversible turn signal plug must be reversed for passenger-side installations.
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3-PLUG MVP® SNOWPLOWS
BLK
BRNLTBLU
PURGRYBLK/ORN
WHTBLU/ORN
WHT/YELBLK/ORNBLK/WHT
3 PORT MODULE
HIGH BEAM IN
DRL IN
LOW BEAM OUT
LOW BEAM IN
SWITCHED VACC INHIGH BEAM OUT
MODULE POWER IN
COM
LEFT HIGH BEAM OUT
LEFT TURN OUT
MODULE COM INRIGHT HIGH BEAM OUT
RIGHT TURN OUT
LEFT LOW BEAM OUT
RIGHT LOW BEAM OUT
GRY
A
PUR
JK
E
GH
F
CD
B
WHT/YEL
LTBLUBRN
BLU/ORN
WHTBLK
1011
6
89
7
54321
A DCB
SWV-DC
ACC-CC12VCOM
11 PIN MOLDED PLUGS
TURN-VA
LOW-VACOM-VJ
COM-BK
HIGH-VB
HIGH-CD
LOW-AE
LOW-VACOM-VJ
COM-BK
HIGH-VB
PARK-VH
HIGH-CD
LOW-AE
TURN-VB
ABCDEFGHJK
ABCDEFGHJK
ABCDEFGHJK
ABCDEFGHJK
ABCDEFGHJK
BLK/WHT
BLK/ORN
TURN IN
COM
CONTROL PWR OUT
LOW BEAM OUTHIGH BEAM OUT
COMCOMPARK LAMP INTURN INCONTROL POWER IN
HIGH BEAM INLOW BEAM IN
PARK LAMP OUTLEFT HEADLAMP COMRIGHT HEADLAMP COM
B
C
SWV-DC
F1TURN-BGPARK-VH
PLOW LIGHTS
HIGH-4CCOM-11B
TURN-8B
PARK
COM
LOW-6A
PARK
COMTURN-9B
HIGH-3C
LOW-1ACOM-5B
PLOW LIGHTINGHARNESS, 11 PIN
COM
COM-5B
HIGH-3CCOMLOW-1A
HIGH-4C
TURN-8B
PARKCOM-11B
TURN-9B
LOW-6A
4
8
1011
9
67
5
23
1
VEHICLE LIGHTINGHARNESS, 11 PIN
PLUG-IN HARNESS(H13 HARNESS SHOWN) F1
F1 & F210 AMP MINISTYLE FUSES
F2
SP112V12V
A
BLK/
ORN
LOW-VAHIGH-VB
HIGH-CDLOW-AEF2TURN-AG
COM-BJCOM-BK
DRL-VH
ACC-CC
HIGH-VBLOW-VA
HIGH-CDLOW-AE
COM-BJCOM-BK
HIGHLOWBEAM
PARKTURN
HIGHLOWBEAM
TURNPARK
REVERSABLE TURNSIGNAL PLUG
NOTE:LABELING SHOWN, LEFT AND RIGHT,IS CORRECT IF THE MODULE ISLOCATED ON THE DRIVER'S SIDE OFTHE VEHICLE.A REVERSIBLE TURN SIGNAL PLUG ISPROVIDED TO COMPENSATE FOR THELEFT OR RIGHT SIDE MODULEMOUNTING REQUIREMENTS.
NEG.
PUMP MOTOR S3
S2
POS.
S1
LTGRN44LTGRN
WHT/YEL8 8
11 11
910
910
667 7
5 5
WHT/YEL
LTBLU23
23
1 1
LTBLU
BLK/
ORN BATTERY
-
RED/GRN
VEHICLE CABLE ASSEMBLY
BATTERY CABLE 22"
+ MOTOR RELAY
A ABC C
B
15A
A B
BRN/GRN
WHT/YEL
RED
12
1011
BRN/RED
BLK/ORNRED/YEL 8
9
7
TO SWITCHEDACCESSORY LEAD
ORNWHT
BLU
YEL
GRYVIO
BLK/ORNBLK/ORN
BLK/ORN BLK/ORN EF
HJ
G
D
KDKBLU/WHT
RED/GRN
RED/YELRED
29047ADAPTER
DKBLU/REDBLU
K
HJ
FG
ED
(BLUE WIRES)
(GREEN WIRES)
3 3
5 56 6
4 4
12
12
1314
789
1011121314
99
111110 10
87
87
65
65
22
43
43
1 1
BLKBRNTANREDGRN
1110987654321
S6
S5
S4
RED
BLK/WHT
BLU/ORN
LTBLU/ORN
BLK/WHT
BLK/WHT
LTBLULTGRN
RED/YEL
BLU/ORN
BLU/ORN
LTBLU/ORN
LTBLU/ORN
BRN/GRN
BA C D
7.5A
BA
VEHICLE CONTROLHARNESS, 7 PIN7 PIN MOLDED PLUGS
CONTROL
RED/GRN
RED/WHTRED/BLK
RED/YELRED
3-PORT ISOLATION MODULE – ELECTRICAL SCHEMATIC
NOTE: Labeling shown (left and right) is correct for modules located on the driver's side of the vehicle. The reversible turn signal plug must be reversed for passenger-side installations.
-
Lit. No. 22373, Rev. 07 November 1, 2008
17
BLK
BRNLTBLU
PURGRYBLK/ORN
WHTBLU/ORN
WHT/YELBLK/ORNBLK/WHT
3 PORT MODULE
HIGH BEAM IN
DRL IN
LOW BEAM OUT
LOW BEAM IN
SWITCHED VACC INHIGH BEAM OUT
MODULE POWER IN
COM
LEFT HIGH BEAM OUT
LEFT TURN OUT
MODULE COM INRIGHT HIGH BEAM OUT
RIGHT TURN OUT
LEFT LOW BEAM OUT
RIGHT LOW BEAM OUT
GRY
A
PUR
JK
E
GH
F
CD
B
WHT/YEL
LTBLUBRN
BLU/ORN
WHTBLK
1011
6
89
7
54321
A DCB
SWV-DC
ACC-CC12VCOM
11 PIN MOLDED PLUGS
TURN-VA
LOW-VACOM-VJ
COM-BK
HIGH-VB
HIGH-CD
LOW-AE
LOW-VACOM-VJ
COM-BK
HIGH-VB
PARK-VH
HIGH-CD
LOW-AE
TURN-VB
ABCDEFGHJK
ABCDEFGHJK
ABCDEFGHJK
ABCDEFGHJK
ABCDEFGHJK
BLK/WHT
BLK/ORN
TURN IN
COM
CONTROL PWR OUT
LOW BEAM OUTHIGH BEAM OUT
COMCOMPARK LAMP INTURN INCONTROL POWER IN
HIGH BEAM INLOW BEAM IN
PARK LAMP OUTLEFT HEADLAMP COMRIGHT HEADLAMP COM
B
C
SWV-DC
F1TURN-BGPARK-VH
PLOW LIGHTS
HIGH-4CCOM-11B
TURN-8B
PARK
COM
LOW-6A
PARK
COMTURN-9B
HIGH-3C
LOW-1ACOM-5B
PLOW LIGHTINGHARNESS, 11 PIN
COM
COM-5B
HIGH-3CCOMLOW-1A
HIGH-4C
TURN-8B
PARKCOM-11B
TURN-9B
LOW-6A
4
8
1011
9
67
5
23
1
VEHICLE LIGHTINGHARNESS, 11 PIN
PLUG-IN HARNESS(H13 HARNESS SHOWN) F1
F1 & F210 AMP MINISTYLE FUSES
F2
SP112V12V
A
BLK/
ORN
LOW-VAHIGH-VB
HIGH-CDLOW-AEF2TURN-AG
COM-BJCOM-BK
DRL-VH
ACC-CC
HIGH-VBLOW-VA
HIGH-CDLOW-AE
COM-BJCOM-BK
HIGHLOWBEAM
PARKTURN
HIGHLOWBEAM
TURNPARK
REVERSABLE TURNSIGNAL PLUG
NOTE:LABELING SHOWN, LEFT AND RIGHT,IS CORRECT IF THE MODULE ISLOCATED ON THE DRIVER'S SIDE OFTHE VEHICLE.A REVERSIBLE TURN SIGNAL PLUG ISPROVIDED TO COMPENSATE FOR THELEFT OR RIGHT SIDE MODULEMOUNTING REQUIREMENTS.
RED/GRN
RED TO SWITCHEDACCESSORY LEAD
BLK/ORN
BLK/
ORN
RED/GRN
RED/YELRED
29047ADAPTER
DBA C
(BLUE WIRES)
(GREEN WIRES)
BRN/RED
BRN/GRNRED
K J H CEG F D AB
K J H CEG F D AB
B
7.5A
A B A
15A
ORANGECONTROL POWERIF NEEDED
BATTERY
-+
VEHICLE CONTROL HARNESS26498
RED/WHT
RED/BLK
CONFIGURATION PLUG IS NOTREQUIRED WITH 3-PORTLIGHTING MODULES
3-PLUG STRAIGHT BLADE SNOWPLOWSWITH CENTRAL HYDRAULICS
3-PORT ISOLATION MODULE – ELECTRICAL SCHEMATIC
NOTE: Labeling shown (left and right) is correct for modules located on the driver's side of the vehicle. The reversible turn signal plug must be reversed for passenger-side installations.
-
Lit. No. 22373, Rev. 07 November 1, 2008
18
2-PLUG MVP PLUS™ SNOWPLOWS (11-PIN)
321
4321
4
4-Pin Plug(Under Dash)
REDRED
BLKBLK
GRNRED
WHTBLK
Control
RED To Switched Accessory Lead
Vehicle Control Harness, 4 Wire
1 – Red2 – Green3 – White4 – Black
1 – Red (Control Power)2 – Red (Twisted with #3)3 – Black (Twisted with #2)4 – Black (Control Ground)
4
2
3
1
4
2
3
1
(connector face view)
Vehicle Battery Cable, 4 Receptacle
BLK
BLK
RE
D
BA C D
WH
T
RED RED
C C
AB
AB
DD BLK
TA
N
PlowLightingHarness,
11 PinTURNPARK COM
HIGHLOWBEAM
PARKTURN
HIGHLOWBEAM
LOW-6A
TURN-8B
COM-11B
PARK
HIGH-4C
C
ABB
C
ABB
C
AB
C
AB
COM-5BLOW-1A
HIGH-3C
TURN-9BPARK
COM
TURN-9B
COM-11BPARK
LOW-6A
TURN-8B
COM-5B
COM
HIGH-4C
LOW-1A
HIGH-3CCOM
8
11109
7
56
34
12
Plow Module
WHTTAN
BLK
BLK
RED
4 Amp Fuse: S1, S2, S34 Amp Fuse: Motor Relay
4 Amp Fuse: S4, S5, S6, S74 Amp Fuse: S8, S9, S10, S11
–PumpMotor
RED
RE
D
MotorRelay
S1
S2
S3
BLKRED
REDWHT
GRN
BLURED
AG
ABCDEF
K
HJ
G
ABCDEF
K
HJ
G
ABCDEF
K
HJ
G
ABCDEF
K
HJ
B
S10
S9
S8
S11
S7
S6
GRY
RED
WHT
GRN
ORN
REDBRN
YEL
S4
S5 BLK
TAN
BBA
CA
HH
DC
FG
EEDC
FG
KJK
J
Battery+
+–
RED BLK
RE
D
Located at Front of Vehicle
Snowplow Assembly
Passenger-Side Plow Headlamp
Driver-Side Plow Headlamp BLK
BRNLTBLU
PURGRY
BLK/ORN
WHTBLU/ORN
WHT/YEL BLK/ORNBLK/WHT
LOW-VACOM-VJ
COM-BK
HIGH-VB
PARK-VH
HIGH-CD
LOW-AE
TURN-VB
TURN-VA
LOW-VACOM-VJ
COM-BK
HIGH-VBHIGH-CD
LOW-AE
AC
C-C
CS
WV
-DC
12V
CO
M
GRYPUR
WHT/YEL
LTBLUBRN
BLU/ORN
WHTBLK
BLK/WHT
BLK/ORN
SWV-DC
F1-BFTURN-BGPARK-VH
LOW-VAHIGH-VB
HIGH-CDLOW-AE
F2-CFTURN-AG
COM-BJCOM-BK
ACC-CC
HIGH-VBLOW-VA
HIGH-CDLOW-AE
COM-BJCOM-BK
VehicleLightingHarness,
11 Pin
Isolation Module
ReversibleTurn Signal
Plug
10 AmpControl
& ModuleFuses
TypicalPlug-In
Harness
HIGH BEAM IN
DRL IN
LOW BEAM OUT
LOW BEAM IN
SWITCHED VACC INHIGH BEAM OUT
MODULE POWER IN
COM OUT
LEFT HIGH BEAM OUT
LEFT TURN OUT
MODULE COM INRIGHT HIGH BEAM OUT
RIGHT TURN OUT
LEFT LOW BEAM OUT
RIGHT LOW BEAM OUT
1011
6
89
7
54321
A DCB
TURN IN
COM IN
CONTROL PWR OUT
LOW BEAM OUTHIGH BEAM OUT
COM OUTCOM INPARK LAMP INTURN INCONTROL POWER IN
HIGH BEAM INLOW BEAM IN
PARK LAMP OUTLEFT HEADLAMP COMRIGHT HEADLAMP COM
12V12VB
LK/O
RN
A
B
CABCDEFGHJK
ABCDEFGHJK
ABCDEFGHJK
ABCDEFGHJK
ABCDEFGHJK
ABCDEFGHJK
NOTE: Labeling shown (left and right) is correct for modules located on the driver's side of the vehicle. The reversible turn signal plug must be reversed for passenger-side installations.
3-PORT ISOLATION MODULE – ELECTRICAL SCHEMATIC
CAUTIONOn 2-plug electrical systems, plug covers shall be used whenever snowplow is disconnected. Vehicle Battery Cable is 12-volt unfused source.
-
Lit. No. 22373, Rev. 07 November 1, 2008
19
2-PLUG WIDE-OUT™ SNOWPLOWS
321
4321
4
4-Pin Plug(Under Dash)
REDRED
BLKBLK
GRNRED
WHTBLK
Control
RED To Switched Accessory Lead
Vehicle Control Harness, 4 Wire
1 – Red
2 – Green
3 – White
4 – Black
1 – Red (Control Power)
2 – Red (Twisted with #3)
3 – Black (Twisted with #2)
4 – Black (Control Ground)
4
2
3
1
4
2
3
1
(connector face view)
Vehicle Battery Cable, 4 Receptacle
BL
K
BLK
RE
D
BA C D
WH
T
RED RED
C C
AB
AB
DD BLK
TA
N
PlowLighting Harness,
11 PinTURN PARK COM
HIGH LOW BEAM
PARK TURN
HIGH LOW BEAM
LOW-6A
TURN-8B
COM-11B
PARK
HIGH-4C
C
A
BB
C
A
BB
C
AB
C
AB
COM-5BLOW-1A
HIGH-3C
TURN-9B
PARK
COM
TURN-9B
COM-11BPARK
LOW-6A
TURN-8B
COM-5B
COM
HIGH-4C
LOW-1A
HIGH-3CCOM
8
11109
7
56
34
12
Battery
+–
RED BLK
Located at Front of Vehicle
Snowplow Assembly
Passenger-Side Plow Lamp
Driver-Side Plow Lamp BLK
BRNLTBLU
PURGRY
BLK/ORN
WHTBLU/ORN
WHT/YEL BLK/ORNBLK/WHT
LOW-VACOM-VJ
COM-BK
HIGH-VB
PARK-VH
HIGH-CD
LOW-AE
TURN-VB
TURN-VA
LOW-VACOM-VJ
COM-BK
HIGH-VBHIGH-CD
LOW-AE
SW
V-D
CA
CC
-CC
12V
CO
M
GRYPUR
WHT/YEL
LTBLUBRN
BLU/ORN
WHTBLK
BLK/WHT
BLK/ORN
SWV-DC
F1-BFTURN-BGPARK-VH
LOW-VAHIGH-VB
HIGH-CDLOW-AEF2-CF
TURN-AG
COM-BJCOM-BK
ACC-CC
HIGH-VBLOW-VA
HIGH-CDLOW-AE
COM-BJCOM-BK
VehicleLighting Harness,
11 Pin
Isolation Module
ReversibleTurn Signal
Plug
10 Amp Control
& Module Fuses
TypicalPlug-In
Harness
HIGH BEAM IN
DRL IN
LOW BEAM OUT
LOW BEAM IN
SWITCHED VACC INHIGH BEAM OUT
MODULE POWER IN
COM OUT
LEFT HIGH BEAM OUT
LEFT TURN OUT
MODULE COM INRIGHT HIGH BEAM OUT
RIGHT TURN OUT
LEFT LOW BEAM OUT
RIGHT LOW BEAM OUT
1011
6
89
7
54321
A DCB
TURN IN
COM IN
CONTROL PWR OUT
LOW BEAM OUTHIGH BEAM OUT
COM OUTCOM INPARK LAMP INTURN INCONTROL POWER IN
HIGH BEAM INLOW BEAM IN
PARK LAMP OUTLEFT HEADLAMP COMRIGHT HEADLAMP COM
12V
12VBLK
/OR
NA
B
CABCDEFGHJK
ABCDEFGHJK
ABCDEFGHJK
ABCDEFGHJK
ABCDEFGHJK
ABCDEFGHJK
Plow Module
–Pump Motor
Motor Relay
S1
S2
A
B
S10
S9
S8
S7
S6
RED
RED
BLK
BLK
RED
RED
DKBLU
DKGRN
GRY
BRN
YEL
BLK
RED
REDWHT
WHT
RED
TANWHT
S5
C
+
G
ABCDEF
K
HJ
G
ABCDEF
K
HJ
G
ABCDEF
K
HJ
G
ABCDEF
K
HJ
G
ABCDEF
K
HJ
G
ABCDEF
K
HJ
4 Amp Fuse: S5, S6, S7, S84 Amp Fuse: S9, S10
4 Amp Fuse: S1, S2, Motor Relay
4 Amp Fuse: Sense
NOTE: Labeling shown (left and right) is correct for modules located on the driver side of the vehicle. The reversible turn signal plug must be reversed for passenger-side installations.
3-PORT ISOLATION MODULE – ELECTRICAL SCHEMATIC
CAUTIONOn 2-plug electrical systems, plug covers shall be used whenever snowplow is disconnected. Vehicle Battery Cable is 12-volt unfused source.
-
Lit. No. 22373, Rev. 07 November 1, 2008
20
HEADLAMP WIRING – 29048 HARNESS KITS (HB-3/HB-4)
Harness Part #28253
Location Wire Color StampBlack Female Plug
A DK BLUE COM-AJB DK BLUE HIGH-BB
2-Key Male PlugA DK BLUE HIGH-ADB DK BLUE COM-BK
Gray Female PlugA DK BLUE COM-BAB DK BLUE LOW-BA
1-Key Male PlugA DK BLUE LOW-AEB DK BLUE COM-BA
Splice Tap WiresLoose DK BLUE TURN-VA
10-Position Plug "C"A DK BLUE LOW-BAB DK BLUE HIGH-BBC RED ACC-CCD DK BLUE HIGH-ADE DK BLUE LOW-AEF RED F2-CFG DK BLUE TURN-AGH DK BLUE DRL-VHJ DK BLUE COM-AJK DK BLUE COM-BK
Harness Part #28253
Location Wire Color StampBlack Female Plug
A DK GREEN COM-AJB DK GREEN HIGH-BB
2-Key Male PlugA DK GREEN HIGH-ADB DK GREEN COM-BK
Gray Female PlugA DK GREEN COM-BAB DK GREEN LOW-BA
1-Key Male PlugA DK GREEN LOW-AEB DK GREEN COM-BA
Splice Tap WiresLoose DK GREEN TURN-VBLoose DK GREEN PARK-VHLoose DK BLUE DRL-VH
10-Position Plug "B"A DK GREEN LOW-BAB DK GREEN HIGH-BBC RED SWV-DCD DK GREEN HIGH-ADE DK GREEN LOW-AEF RED F1-BFG DK GREEN TURN-BGH DK GREEN PARK-VHJ DK GREEN COM-AJK DK GREEN COM-BK
2-Key Male Plug
Black Female Plug
10-Position Plugfor Harness #28253
Plugs for Harness #28253
1-Key Male Plug
Gray Female Plug
-
Lit. No. 22373, Rev. 07 November 1, 2008
21
HEADLAMP WIRING – 29049 HARNESS KIT (H13)
Harness Part #28986
Location Wire Color StampFemale Plug
A DK BLUE LOW-AEB DK BLUE COM-BKC DK BLUE HIGH-CD
Male Plug A DK BLUE LOW-AA B DK BLUE COM-BJ C DK BLUE HIGH-CB
Splice Tap WiresLoose DK BLUE TURN-VA
10-Position Plug "C"A DK BLUE LOW-AAB DK BLUE HIGH-CBC RED ACC-CCD DK BLUE HIGH-CDE DK BLUE LOW-AEF RED F2-CFG DK BLUE TURN-AGH — —J DK BLUE COM-BJK DK BLUE COM-BK
Harness Part #28986
Location Wire Color StampFemale Plug
A DK GREEN LOW-AEB DK GREEN COM-BJC DK GREEN HIGH-CD
Male Plug A DK GREEN LOW-AA B DK GREEN COM-BK C DK GREEN HIGH-CB
Splice Tap WiresLoose DK GREEN TURN-VBLoose DK GREEN PARK-VH
10-Position Plug "B"A DK GREEN LOW-AAB DK GREEN HIGH-CBC RED SWV-DCD DK GREEN HIGH-CDE DK GREEN LOW-AEF RED F1-BFG DK GREEN TURN-BGH DK GREEN PARK-VHJ DK GREEN COM-BJK DK GREEN COM-2K
Male Plug
Female Plug
Plugs for Harness #28986
10-Position Plugfor Harness #28986
-
Lit. No. 22373, Rev. 07 November 1, 2008
22
HEADLAMP WIRING – 29050 HARNESS KIT (HB-1 OR HB-5) (1A/2A1)
1Not shown. Requires adapter kit 26641.
Harness Part #28930
Location Wire Color StampBlack Molded Female Plug
1 — —2 DK BLUE COM-2J3 DK BLUE HIGH-3B4 DK BLUE LOW-4A5 — —
Blue Molded Male Plug A* DK BLUE LOW-AE B* DK BLUE COM-BK C DK BLUE HIGH-CD*Reversed for HB-1 Applications
Splice Tap WiresLoose DK BLUE TURN-VA
10-Position Plug "C"A DK BLUE LOW-4AB DK BLUE HIGH-3BC RED ACC-CCD DK BLUE HIGH-CDE DK BLUE LOW-AEF RED F2-CFG DK BLUE TURN-AGH — —J DK BLUE COM-2JK DK BLUE COM-BK
Harness Part #28930
Location Wire Color StampBlack Molded Female Plug
1 — —2 DK GREEN COM-2K3 DK GREEN HIGH-3B4 DK GREEN LOW-4A5 — —
Blue Molded Male Plug A* DK GREEN LOW-AE B* DK GREEN COM-BJ C DK GREEN HIGH-CD*Reversed for HB-1 Applications
Splice Tap WiresLoose DK GREEN TURN-VBLoose DK GREEN PARK-VH
10-Position Plug "B"A DK GREEN LOW-4AB DK GREEN HIGH-3BC RED SWV-DCD DK GREEN HIGH-CDE DK GREEN LOW-AEF RED F1-BFG DK GREEN TURN-BGH DK GREEN PARK-VHJ DK GREEN COM-BJK DK GREEN COM-2K
Blue Male Plug
Black Molded Female Plug
10-Position Plugfor Harness #28930
Plugs for Harness #28930
-
Lit. No. 22373, Rev. 07 November 1, 2008
23
HEADLAMP WIRING – 29051 HARNESS KIT (2B/2D)
Harness Part #28464
Location Wire Color StampFemale Plug
A DK BLUE COM-AKB DK BLUE LOW-BEC DK BLUE HIGH-CD
Male Plug A DK BLUE HIGH-AB B DK BLUE LOW-BA C DK BLUE COM-CJ
Splice Tap WiresLoose DK BLUE TURN-VA
10-Position Plug "C"A DK BLUE LOW-BAB DK BLUE HIGH-ABC RED ACC-CCD DK BLUE HIGH-CDE DK BLUE LOW-BEF RED F2-CFG DK BLUE TURN-AGH — —J DK BLUE COM-BJK DK BLUE COM-AK
Harness Part #28464
Location Wire Color StampFemale Plug
A DK GREEN COM-AKB DK GREEN LOW-BEC DK GREEN HIGH-CD
Male Plug A DK GREEN HIGH-AB B DK GREEN LOW-BA C DK GREEN COM-CJ
Splice Tap WiresLoose DK GREEN TURN-VBLoose DK GREEN PARK-VH
10-Position Plug "B"A DK GREEN LOW-BAB DK GREEN HIGH-ABC RED SWV-DCD DK GREEN HIGH-CDE DK GREEN LOW-BEF RED F1-BFG DK GREEN TURN-BGH DK GREEN PARK-VHJ DK GREEN COM-CJK DK GREEN COM-AK
Male Plug
Female Plug
10-Position Plugfor Harness #28464
Plugs for Harness #28464
-
Lit. No. 22373, Rev. 07 November 1, 2008
24
HEADLAMP WIRING – 29052 HARNESS KIT (HB-3/HB-4)
Harness Part #28924
Location Wire Color StampFemale Plug
A DK BLUE HIGH-ABB DK BLUE LOW-BAC DK BLUE COM-CJD DK BLUE COM-DD
Male PlugA DK BLUE HIGH-ADB DK BLUE LOW-BEC DK BLUE COM-CKD DK BLUE COM-DD
Splice Tap WiresLoose DK BLUE TURN-VA
10-Position Plug "C"A DK BLUE LOW-BAB DK BLUE HIGH-ABC RED ACC-CCD DK BLUE HIGH-ADE DK BLUE LOW-BEF RED F2-CFG DK BLUE TURN-AGH — —J DK BLUE COM-CJK DK BLUE COM-CK
Harness Part #28924
Location Wire Color StampFemale Plug
A DK GREEN HIGH-ABB DK GREEN LOW-BAC DK GREEN COM-CKD DK GREEN COM-DD
Male PlugA DK GREEN HIGH-ADB DK GREEN LOW-BEC DK GREEN COM-CJD DK GREEN COM-DD
Splice Tap WiresLoose DK GREEN TURN-VBLoose DK GREEN PARK-VH
10-Position Plug "B"A DK GREEN LOW-BAB DK GREEN HIGH-ABC RED SWV-DCD DK GREEN HIGH-ADE DK GREEN LOW-BEF RED F1-BFG DK GREEN TURN-BGH DK GREEN PARK-VHJ DK GREEN COM-CJK DK GREEN COM-CK
Male Plug
Female Plug
10-Position Plugfor Harness #28924
Plugs for Harness #28924
-
Lit. No. 22373, Rev. 07 November 1, 2008
25
HEADLAMP WIRING – 29053 HARNESS KIT (2B/2D OR 1A/2A)
Harness Part #29058
Location Wire Color StampFemale Plug
A DK BLUE HIGH-ADB DK BLUE LOW-BEC DK BLUE COM-CJD DK BLUE TURNE DK BLUE PARK
Male PlugA DK BLUE HIGH-ABB DK BLUE LOW-BAC DK BLUE COM-CKD DK BLUE TURNE DK BLUE PARK
10-Position Plug "C"A DK BLUE LOW-BAB DK BLUE HIGH-ABC RED ACC-CCD DK BLUE HIGH-ADE DK BLUE LOW-BEF RED F2-CFG DK BLUE TURN-AGH — —J DK BLUE COM-CJK DK BLUE COM-CK
Harness Part #29058
Location Wire Color StampFemale Plug
A DK GREEN HIGH-ADB DK GREEN LOW-BEC DK GREEN COM-CKD DK GREEN TURNE DK GREEN PARK
Male PlugA DK GREEN HIGH-ABB DK GREEN LOW-BAC DK GREEN COM-CJD DK GREEN TURNE DK GREEN PARK
10-Position Plug "B"A DK GREEN LOW-BAB DK GREEN HIGH-ABC RED SWV-DCD DK GREEN HIGH-ADE DK GREEN LOW-BEF RED F1-BFG DK GREEN TURN-BGH DK GREEN PARKJ DK GREEN COM-CJK DK GREEN COM-CK
Male Plug
Female Plug
10-Position Plugfor Harness #29058
Plugs for Harness #29058
-
Lit. No. 22373, Rev. 07 November 1, 2008
26
10-Position Plugfor Harness #29270
Plugs for Harness #29270
7-Pin Male Plug7-Pin Female Plug
HEADLAMP WIRING – 29054 HARNESS KIT (2B/2D)
Harness Part #29270
Location Wire Color Stamp7-Pin Female Plug
A BLACK PARKB BLACK LOWC BLACK L TURND BLACK R TURNE BLACK HIGHF — —G BLACK COM
7-Pin Male PlugA BLACK PARKB BLACK LOWC BLACK L TURND BLACK R TURNE BLACK HIGHF — —G BLACK COM
10-Position Plug "C"A BLACK LOWB BLACK HIGHC RED ACCD — —E — —F RED F2G BLACK R TURNH — —J — —K BLACK COM
Harness Part #29270
Location Wire Color Stamp10-Position Plug "B"
A BLACK LOWB BLACK HIGHC RED SWVD BLACK HIGHE BLACK LOWF RED F1G BLACK L TURNH BLACK PARKJ BLACK COMK BLACK COM
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Lit. No. 22373, Rev. 07 November 1, 2008
27
HEADLAMP WIRING – 29400-2 HARNESS KITS (HB-3/H11)
Harness Part #29499
Location Wire Color StampHB-3 Female Plug
A DK BLUE COM-AJB DK BLUE HIGH-BB
HB-3 Male PlugA DK BLUE HIGH-ADB DK BLUE COM-BK
H11 Female PlugA DK BLUE COM-AAB DK BLUE LOW-BA
H11 Male PlugA DK BLUE COM-AAB DK BLUE LOW-BE
Splice Tap WiresLoose DK BLUE TURN-VA
10-Position Plug "C"A DK BLUE LOW-BAB DK BLUE HIGH-BBC RED ACC-CCD DK BLUE HIGH-ADE DK BLUE LOW-BEF RED F2-CFG DK BLUE TURN-AGH DK BLUE DRL-VHJ DK BLUE COM-AJK DK BLUE COM-BK
Harness Part #29499
Location Wire Color StampHB-3 Female Plug
A DK GREEN COM-AJB DK GREEN HIGH-BB
HB-3 Male PlugA DK GREEN HIGH-ADB DK GREEN COM-BK
H11 Female PlugA DK GREEN COM-AAB DK GREEN LOW-BA
H11 Male PlugA DK GREEN COM-AAB DK GREEN LOW-BE
Splice Tap WiresLoose DK GREEN TURN-VBLoose DK GREEN PARK-VHLoose DK BLUE DRL-VH
10-Position Plug "B"A DK GREEN LOW-BAB DK GREEN HIGH-BBC RED SWV-DCD DK GREEN HIGH-ADE DK GREEN LOW-BEF RED F1-BFG DK GREEN TURN-BGH DK GREEN PARK-VHJ DK GREEN COM-AJK DK GREEN COM-BK
HB-3 Male Plug
HB-3 Female Plug
10-Position Plugfor Harness #29499
Plugs for Harness #29499
H11 Male Plug
H11 Female Plug
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Lit. No. 22373, Rev. 07 November 1, 2008
28
Headlamp Type Vehicle(s) Year(s) Page Isolation Module Kit #Short
Plug-inLong
Plug-inIsolation Module #
H13
Ford F-150 (New Body Style) '04–Present
4528400
28244 28242 26400
Ford Super Duty '05–PresentDodge 1500, 2500, 3500 '06–Present
Dodge Dakota '05–PresentDodge Durango '04–Present
GMC Yukon/Yukon XL (All New) '07–Present
HB-3/H11Chevy/GMC 1500/2500/3500 (All New) '07–Present 28400, 28027-2,
29420-1Toyota Tundra '07–PresentChevy/GMC Tahoe/Suburban (All New) '07–Present 42 27780, 29458, 28027-2 26351 26352 27781
HB-3/HB-4
Chevy/GMC Trailblazer/Envoy/Bravada '02–Present 44 28028 28032 28030
26400Chevy/GMC Blazer/Jimmy/S-10/Sonoma '98–Present
41
27480-1
26361 26360Chevy/GMC Colorado/Canyon (US vehicles) '04–Present
Nissan Titan '04–Present 27480-1 & 28027Chevy/GMC 1500/2500/3500 (New Body Style) '99–'02 8437-1
27781Chevy/GMC Colorado/Canyon (Canadian vehicles) '04–Present 8437-1 & 28555Chevy/GMC 1500/2500/3500/Avalanche '03–Present
42
27780
26351 26352Chevy/GMC (Classic Style) '90–'02 8438
26400
Chevy/GMC Blazer/Jimmy/S-10/Sonoma '95–'97Ford Explorer '02–Present 8438 & 28027
2B/2Dor
HB-2
Jeep '84–'02
38
8439
26356 26353
Dodge '72–'93Ford '80–Present
Chevy/GMC '73–'02Toyota '84–Present
International '89–'02 8439 & 26640
2E Chevy/GMC Blazer/Jimmy/S-10/Sonoma '95–'97 8439 & 27968 Dodge Dakota '87–'962B/2D or 1A/2A Chevy/GMC C4500/5500 '03–Present 43 27890 27885 27886
2B/2D Chevy/GMC Topkick/Kodiak 4500/5500 '90–'02 40 8443 n/a 26638HB-5/HB-1 (Quad) Dodge '99–'02 39 8442 26372 26370
HB-1or
HB-5
Dodge '91–Present
37
8436
26349 26354
Ford '80–PresentMazda '91–'94, '99–'03
Toyota 4Runner '92–'95Jeep Liberty '02–Present
Mitsubishi FG '05–Present 8436 & 28860International '03–Present 8436 & 26640
1A/2ADodge '74–'83
8436 & 26641 Chevy/GMC '73–'87Isuzu/Mitsubishi '94–'97
LF/UF Jeep Wagoneer '85–'91 45 28400 & B62225 28244 28242Chevy/GMC '88–'91
4-PORT ISOLATION MODULE – HEADLAMP INDEX
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Lit. No. 22373, Rev. 07 November 1, 2008
29
SNOWPLOW HEADLAMPS
The Isolation Module acts as an electrical hub, automatically directing vehicle power to the appropriate vehicle or snowplow lighting devices, while also supplying battery power to the snowplow control.
The vehicle high and low beams enter and exit the Isolation Module through positions 3 (left-side lighting) and position 4 (right-side lighting). Park, turn and DRL signals also enter through positions 3 and 4. The output of the vehicle dimmer switch is directed to the Isolation Module via the long and short plug-in harnesses.
All snowplow lighting exits the Isolation Module through position 2.
When the snowplow is not attached to the vehicle, the signal passes through the normally closed relay contacts to the vehicle headlamps. During this time, the Isolation Module is inactive, placing no current draw on the vehicle's electrical system.
With the snowplow attached, the Isolation Module is still inactive until either of the two following conditions are met: The vehicle parking lights are turned ON or the vehicle ignition switch is turned ON.
Turning ON the vehicle parking lights activates a series of relays, automatically transferring the vehicle high and low beams to the snowplow while supplying battery power directly to the snowplow parking lights.
Turning ON the vehicle ignition switch energizes a snowplow control relay, supplying vehicle battery power directly to the control via the vehicle control harness. The vehicle ignition switch also supplies power to the vehicle turn signals. Activating the vehicle turn signals energizes turn signal relays, which supply vehicle battery power directly to the snowplow turn signals.
4-PORT ISOLATION MODULE – THEORY OF OPERATION
SNOWPLOW DAYTIME RUNNING LIGHTS
Because Daytime Running Lamps (DRLs) are controlled differently on some vehicles, two Isolation Modules have been developed.
The white Isolation Module transfers the DRL output from the vehicle headlamps to the snowplow headlamps when the vehicle ignition switch is turned ON and the snowplow is attached.
The green Isolation Module, designed for vehicles with dedicated DRL bulbs, senses the vehicle in the DRL mode and a series of relays energize, placing the snowplow low beams in series. This Isolation Module does not turn OFF the vehicle's dedicated DRLs.
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Lit. No. 22373, Rev. 07 November 1, 2008
30
Battery Cable
ShortPlug-In Harness
Vehicle Lighting Harness
Isolation Module
ConfigurationPlug
Dust Cover
4 2 13
MotorRelay
Plow BatteryCable
Plow ControlHarness
Plow LightingHarness
ToCab
Control
ConnectorVehicle BatteryCable
Vehicle ControlHarness
Motor RelayBracket
Motor RelayMounting Bracket
SnowplowSystemCable
OEM Battery Cable
Side Terminal Battery Adapter
SideTerminalBattery
Long Plug-In Harness
4-PORT ISOLATION MODULE SYSTEM
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Lit. No. 22373, Rev. 07 November 1, 2008
31
Cable Clamp
Adapter Kit2B to 2E
(PN 27968-1)
Plug-InAdapterw/Park
Plug-InAdapterw/o Park
Adapter KitHB-5 to HB-2(PN 28860-1)
43
ShortPlug-In
Harness
LongPlug-InHarness
Extension Harness Kit(PN 26640)
Male Female
Adapter KitHB-5 to 1A/2A(PN 26641-1)
In-Line Adapter(PN 28027-2)
Adapter Kit(PN 28555)
AE
Adapter KitHB-5
(PN 29235)
AE
Adapter Kit2B/2D
(PN 29234)
A A
Adapter KitH13 to HB-3/H11
(PN 29420-1)
Adapter KitHB-1
(PN 29056-1)
Adapter KitH13 to LF/UF
(PN B62225-1)
MaleFemale
4-PORT ISOLATION MODULE SYSTEM – ADAPTER KITS
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Lit. No. 22373, Rev. 07 November 1, 2008
32
CONFIGURATION PLUG INSTRUCTIONS – 26421
NOTE: If unsure of headlamp common, confi gure plug for a negative common. Complete the installation and check headlamp functions. Turn on the vehicle lights in the low beam mode. Both low beams should be on. If the left low beam does not illuminate, change plug confi guration to positive common and test headlamp functions.
1. Jumper Position B to Position A 2. Insert cavity plug into Position C3. Install secondary lock
Headlamp Common = Negative
Headlamp Common = Positive
To insert terminal or jumper wire into position:
1. Push terminal into correct cavity,2. Listen for a click. If terminal pulls out, carefully bend locking tab outward and reinstall terminal.
Configuration Plug
1. Jumper Position B to Position C2. Insert cavity plug into Position A3. Install secondary lock
Configuration PlugCavityPlug
Wire Side View
Secondary Lock
Secondary Lock
CavityPlug
Wire Side View
A
CB
BC
A
PLUG CONFIGURATION
Some applications will not use the confi guration plug and will be supplied with a "Dust Cover".
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Lit. No. 22373, Rev. 07 November 1, 2008
33
BLU/ORNLT BLU
BRNGRY
PURBLK/WHTWHT/YELBLK/ORN
BLKWHT
BLU/WHTBLU/RED
BLURED/WHT
RED
YEL*A
A
CB
E
GF
HJK
D
A
CB
E
GF
HJK
D
LT BLUBLU*
PURWHT/YEL
ORNREDGRNGRN
YEL*
LT BLUBLU*
BRNPUR
WHT/YELORNREDGRNGRN
A
CB
E
GF
HJK
D
CB
E
GF
HJK
D
TO SWITCHED ACCESSORY LEAD
12V
BAT
TER
Y
#6 BLK
BRN/RED
BLK/ORN
#6 RED
CONFIGURATION PLUG OR DUST COVER PLUG
PLOW ASSEMBLY
LEFT SIDE PLOW LAMP
BRN
BRN
RED
RED
P
T
PT
RIGHT SIDE PLOW LAMP
PT
RED
BRN
RED
BRNPT
LH
L
H
S1 SOLENOID
S2 SOLENOIDLT GRN
LT BLU
WHT/YEL
BLK
/OR
N
PUMP MOTOR#6 BLK/REDM- +
S3 SOLENOID
#6 BLK
LOCATED NEAR BATTERY
MTR RLY
#6 RED
LOCATED AT FRONT OF VEHICLE
LT BLULT GRN
WHT/YEL
LT BLULT GRN
WHT/YEL
#6 BLK#6 RED From Vehicle
Control Harness
From Vehicle Lighting Harness
From Left Side Vehicle Headlamps
From Right Side Vehicle Headlamps4
3
2
1
RIGHT COMMON OUTRIGHT COMMON IN
RIGHT TURN INRIGHT HIGH BEAM 2 OUT**RIGHT LOW BEAM OUTRIGHT HIGH BEAM OUTRIGHT HIGH BEAM 2 IN**RIGHT HIGH BEAM INRIGHT LOW BEAM IN
LEFT COMMON OUTLEFT COMMON INPARK LAMP INLEFT TURN INLEFT HIGH BEAM 2 OUT**LEFT LOW BEAM OUTLEFT HIGH BEAM OUTLEFT HIGH BEAM 2 IN **LEFT HIGH BEAM INLEFT LOW BEAM IN
A
CB
A
CB
LOCATED AT FRONT OF VEHICLE
BRNPURGRY
WHT
BLK/ORN
LT BLU
BLK
WHT/YEL
BLK/ORN
BLK/WHT
BLU/ORN
BRNPURGRY
WHTBLU/ORN
LT BLU
WHT/YELBLK/ORNBLK/WHT
BLKBLK/ORN
1
3
54
76
891011
21
32
5
76
891011
4
SOLENOIDCONTROL
BLK
GRN
WHT
BRN
RED
BLU
6
4
3
5
2
1
HAND-HELDCONTROLCOIL CORD HARNESS
6
7
5
4
WHT
BLK
GRN
ORN
2
3
1
YEL
BLU
RED
3
4
6
5
7
2
1
6
4
3
5
2
1
LOCATED UNDER DASH
WHT/YELLT BLU
BLK/ORNLT GRN
RED/YEL
BRN/RED
6
43
5
21
1
3
54
76
89
1011
21
3
54
76
89
1011
2
12
12
15-AMP P/T FUSE
7.5-AMP CONTROL FUSE
RIGHT COMMON OUTRIGHT COMMON IN
RIGHT TURN IN
RIGHT LOW BEAM OUTRIGHT HIGH BEAM OUT
RIGHT HIGH BEAM INRIGHT LOW BEAM IN
LEFT COMMON OUT
LEFT COMMON INPARK LAMP INLEFT TURN INDRL SIGNAL INLEFT LOW BEAM OUTLEFT HIGH BEAM OUT
LEFT HIGH BEAM INLEFT LOW BEAM IN YEL
PUR
ORNRED
GRNYEL
BRNPURPNKORNRED
GRNA
CB
E
GF
H
D
A
CB
E
GF
H
D
JK
JK
* HB-1 (9004) A= BLUE, J=YELLOW** 99 DODGE RAM W/ SPORT PACKAGE
(Shown in de-energized state)
#6 BLK/RED#6 BLK
ISOLATION MODULE
4
3
BLK/ORN
RED/YEL RED/YEL
RED/GRN
RED/GRN
RED/BLK
BLK/ORN
FOR HB-3/HB-4 HEADLAMPS:TO VEHICLE HEADLAMPS,PARK/TURN, DRL, ANDFACTORY VEHICLE HARNESSES
LT BLU (or BLU)BLU (or LT BLU)
LT BLU (or BLU)BLU (or LT BLU)
EXCEPT
FOR ALLHEADLAMPS
TO VEHICLE HEADLAMPS,PARK/TURN, AND FACTORYVEHICLEHARNESSES
HB-3/HB-4:
4-PORT ISOLATION MODULE – ELECTRICAL SCHEMATIC
3-PLUG STRAIGHT BLADE SNOWPLOWS (3-PIN)
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Lit. No. 22373, Rev. 07 November 1, 2008
34
4-PORT ISOLATION MODULE – ELECTRICAL SCHEMATIC
BLU/ORGLT BLU
BRNGRYPUR
BLK/WHTWHT/YELBLK/ORG
BLKWHT
DK BLU/WHTBLU/RED
BLURED/WHTRED/BLK
RED
YEL*A
A
CB
E
GF
HJK
D
A
CB
E
GF
HJK
D
LT BLUBLU*
PURWHT/YEL
ORGREDGRNGRNYEL*
LT BLUBLU*BRNPUR
WHT/YELORGREDGRNGRN
A
CB
E
GF
HJK
D
CB
E
GF
HJK
D
TO SWITCHED ACCESSORY LEAD
12V
BAT
TER
Y
#6 BLK
BRN/RED
BRN/GRN
#6 RED
CONFIGURATION PLUG OR DUST COVER PLUG
PLOW ASSEMBLY
LOCATED NEAR BATTERY
MTR RLY#6 RED
LOCATED AT FRONT OF VEHICLE
LT BLULT GRN
WHT/YEL
LT BLULT GRN
WHT/YEL
#6 BLK#6 RED From Vehicle
Control Harness
From Vehicle Lighting Harness
From Left Side Vehicle Headlamps
From Right Side Vehicle Headlamps4
3
2
1
FOR HB-3/HB-4 HEADLAMPS:TO VEHICLE HEADLAMPS,PARK/TURN, DRL, ANDFACTORY VEHICLE HARNESSES
RIGHT COMMON OUTRIGHT COMMON IN
RIGHT TURN IN
RIGHT LOW BEAM OUTRIGHT HIGH BEAM OUT
RIGHT HIGH BEAM INRIGHT LOW BEAM IN
LEFT COMMON OUTLEFT COMMON INPARK LAMP INLEFT TURN INDRL SIGNAL INLEFT LOW BEAM OUTLEFT HIGH BEAM OUT
LEFT HIGH BEAM INLEFT LOW BEAM IN YEL
PUR
ORNRED
GRNYEL
LT BLU (or BLU)BLU (or LT BLU)
LT BLU (or BLU)BLU (or LT BLU)
BRNPURPNKORNRED
GRNA
CB
E
GF
H
D
A
CB
E
GF
H
D
JK
JK RIGHT COMMON OUT
RIGHT COMMON IN
RIGHT TURN INRIGHT HIGH BEAM 2 OUT**RIGHT LOW BEAM OUTRIGHT HIGH BEAM OUTRIGHT HIGH BEAM 2 IN**RIGHT HIGH BEAM INRIGHT LOW BEAM IN
LEFT COMMON OUTLEFT COMMON INPARK LAMP INLEFT TURN INLEFT HIGH BEAM 2 OUT**LEFT LOW BEAM OUTLEFT HIGH BEAM OUTLEFT HIGH BEAM 2 IN **LEFT HIGH BEAM INLEFT LOW BEAM IN
1
3
54
76
89
1011
21
3
54
76
89
1011
2
12
12
RIGHT SIDE PLOW LAMP
PT
RED
BRN
RED
BRNPT
LH
LEFT SIDE PLOW LAMP
BRN
BRN
RED
RED
P
T
PT
L
H
LT BLU/ORN
BLU/ORN
RED
BLK/WHT
LOCATED AT FRONT OF VEHICLE
BRNPURGRY
WHT
BLK/ORN
LT BLU
BLK
WHT/YEL
BLK/ORN
BLK/WHT
BLU/ORN
BRNPURGRY
WHTBLU/ORN
LT BLU
WHT/YELBLK/ORNBLK/WHT
BLKBLK/ORN
1
3
54
76
891011
21
32
5
76
891011
4
S1 SOLENOID
S2 SOLENOID
PUMP MOTOR
#6 BLK
#6 BLK/RED- +M
S3 SOLENOID
S4 SOLENOID
S5 SOLENOID
S6 SOLENOID
RED
BLK/WHT
RED/YEL
BLU/ORN
LT BLU/ORN
HAND-HELDCONTROL
COIL CORD HARNESS
67
54WHT
BLK
GRN
ORN
23
1YEL
BLU
RED
6
43
5
21
34
65
7
21
789
1011121314
891011
89
1011
VIOGRY
TANBRN
LOCATED UNDER DASH
6
43
5
21
7891011121314
RED/YEL
BRN/GRN
LT BLU/ORNBLU/ORNBLK/WHT
LT GRNLT BLU
WHT/YELBRN/RED
15-AMP P/T FUSE10-AMP CONTROL FUSE
A
CB
A
CB
* HB-1 (9004) A= BLUE, J=YELLOW** 99–02 DODGE RAM W/ SPORT PACKAGE
BLK/ORN
RED/GRN
(Shown in de-energized state)
4
3
RE
D
RED/GRN
RED/YEL
BLK/ORN
EXCEPT
FOR ALLHEADLAMPS
TO VEHICLE HEADLAMPS,PARK/TURN, AND FACTORYVEHICLEHARNESSES
HB-3/HB-4:
F1
F2
3-PLUG MVP® SNOWPLOWS (7-PIN)
-
Lit. No. 22373, Rev. 07 November 1, 2008
35
321
4321
4
4-Pin Plug(Under Dash)
REDRED
BLKBLK
GRNRED
WHTBLK
Control
RED
RED/GRN
To Switched Accessory Lead
Vehicle Control Harness, 4 Wire
1 – Red2 – Green3 – White4 – Black
1 – Red (Control Power)2 – Red (Twisted with #3)3 – Black (Twisted with #2)4 – Black (Control Ground)
4
2
3
1
4
2
3
1
(connector face view)
A DCB
Vehicle Battery Cable, 4 Receptacle
BLK
BLK
RE
D
BA C D
WH
T
RED RED
C C
AB
AB
DD BLK
TA
N
ABCDEFGHJK
* HB-1(9004) A=BLUE, J=YELLOW)** 99 DODGE RAM W/SPORT PACKAGE
PS LOW BEAM NO.2 OUT**
PS HIGH BEAM NO.2 IN**
DS HIGH BEAM NO.2 IN**
DS LOW BEAM NO.2 OUT**PARK LAMP IN
PS TURN IN
PS COMMON OUT
PS LOW BEAM OUTPS HIGH BEAM OUT
PS COMMON IN
PS HIGH BEAM INPS LOW BEAM IN
DS TURN IN
DS COMMON OUT
DS LOW BEAM OUTDS HIGH BEAM OUT
DS COMMON IN
DS HIGH BEAM INDS LOW BEAM IN
ABCDEFGHJKVehicle
LightingHarness,
11 Pin
For All HeadlampsExceptHB-3/HB-4:To VehicleHeadlamps,Park/Turnand FactoryVehicleHarnesses
PS COMMON OUTPS COMMON IN
PS HIGH BEAM OUTPS LOW BEAM OUT
PS TURN IN
BLULTBLU
REDORG
PUR
ABCDEFGHJK
DS COMMON INDS COMMON OUT
PS LOW BEAM INPS HIGH BEAM IN
DS HIGH BEAM OUTDS LOW BEAM OUT
DS TURN INPARK LAMP IN
DRL SIGNAL IN
LTBLU
YEL
BLU
GRN
BRNPUR
ORGRED
PNK
DS LOW BEAM INDS HIGH BEAM IN
YELGRN
ABCDEFGHJK
WHT/YELPUR
LTBLU
ORGRED
BLU*
Isolation Module
ABCDEFGHJK
WHT
GRN
WHT/YEL
GRNYEL*
BLU*
REDORG
LTBLU
PURBRN
YEL*GRN
BLU/ORNLTBLUBRN
PURGRY
BLK/WHTWHT/YELBLK/ORN
BLK
From VehicleControl Harness
From VehicleLighting Harness
From DSVehicleHeadlamps
From PSVehicleHeadlamps
DKBLU/WHT
WHT
RED/WHTRED/BLK
DKBLU/RED
RED/YEL
BLU
RED
ABCDEFGHJK
SnowplowLightingHarness,
11 PinTURNPARK COM
HIGHLOWBEAM
PARKTURN
HIGHLOWBEAM
LOW-6A
TURN-8B
COM-11B
PARK
HIGH-4C
C
ABB
C
ABB
C
AB
C
AB
COM-5BLOW-1A
HIGH-3C
TURN-9BPARK
COM
TURN-9B
COM-11BPARK
LOW-6A
TURN-8B
COM-5B
COM
HIGH-4C
LOW-1A
HIGH-3CCOM
8
11109
7
56
34
12
89
1011
4
65
7
23
1 BLK/WHTBLK/ORNWHT/YEL
WHTBLU/ORN
BLKBLK/ORN
GRYPURBRN
LTBLU
A
CB
BLK/ORNPlow Module
WHTTAN
BLK
BLK
RED
4 Amp Fuse: S1, S2, S34 Amp Fuse: Motor Relay
4 Amp Fuse: S4, S5, S6, S74 Amp Fuse: S8, S9, S10, S11
–PumpMotor
RED
RE
D
MotorRelay
S1
S2
S3
BLKRED
REDWHT
GRN
BLURED
AG
ABCDEF
K
HJ
G
ABCDEF
K
HJ
G
ABCDEF
K
HJ
G
ABCDEF
K
HJ
B
S10
S9
S8
S11
S7
S6
GRY
RED
WHT
GRN
ORN
REDBRN
YEL
S4
S5 BLK
TAN
BBA
CA
HH
DC
FG
EEDC
FG
KJK
JBC
AConfigurationPlug or
Dust Cover
15 AmpPark/Turn
Fuse
7.5 AmpControl
Fuse
Battery
Port #1 Adapter
4
3
4
3
2
1
+
+–
For HB-3/HB-4Headlamps:To VehicleHeadlamps,Park/Turn, DRLand FactoryVehicleHarnesses
RED BLK
RE
D
Located at Front of Vehicle
Snowplow Assembly
Passenger-Side Plow Headlamp
Driver-Side Plow Headlamp
4-PORT ISOLATION MODULE – ELECTRICAL SCHEMATIC
2-PLUG MVP PLUS™ SNOWPLOWS
CAUTIONOn 2-plug electrical systems, plug covers shall be used whenever snowplow is disconnected. Vehicle Battery Cable is 12-volt unfused source.
-
Lit. No. 22373, Rev. 07 November 1, 2008
36
321
4321
4
4-Pin Plug(Under Dash)
REDRED
BLKBLK
GRNRED
WHTBLK
Control
RED
RED/GRN
To Switched Accessory Lead
Vehicle Control Harness, 4 Wire
1 – Red2 – Green3 – White4 – Black
1 – Red (Control Power)2 – Red (Twisted with #3)3 – Black (Twisted with #2)4 – Black (Control Ground)
4
2
3
1
4
2
3
1
(connector face view)
A DCB
Vehicle Battery Cable, 4 Receptacle
BLK
BLK
RE
D
BA C D
WH
T
RED RED
C C
AB
AB
DD BLK
TA
N
ABCDEFGHJK
* HB-1(9004) A=BLUE, J=YELLOW)** 99 DODGE RAM W/SPORT PACKAGE
PS LOW BEAM NO.2 OUT**
PS HIGH BEAM NO.2 IN**
DS HIGH BEAM NO.2 IN**
DS LOW BEAM NO.2 OUT**PARK LAMP IN
PS TURN IN
PS COMMON OUT
PS LOW BEAM OUTPS HIGH BEAM OUT
PS COMMON IN
PS HIGH BEAM INPS LOW BEAM IN
DS TURN IN
DS COMMON OUT
DS LOW BEAM OUTDS HIGH BEAM OUT
DS COMMON IN
DS HIGH BEAM INDS LOW BEAM IN
ABCDEFGHJKVehicle
LightingHarness,
11 Pin
For All HeadlampsExceptHB-3/HB-4:To VehicleHeadlamps,Park/Turnand FactoryVehicleHarnesses
PS COMMON OUTPS COMMON IN
PS HIGH BEAM OUTPS LOW BEAM OUT
PS TURN IN
BLULTBLU
REDORG
PUR
ABCDEFGHJK
DS COMMON INDS COMMON OUT
PS LOW BEAM INPS HIGH BEAM IN
DS HIGH BEAM OUTDS LOW BEAM OUT
DS TURN INPARK LAMP IN
DRL SIGNAL IN
LTBLU
YEL
BLU
GRN
BRNPUR
ORGRED
PNK
DS LOW BEAM INDS HIGH BEAM IN
YELGRN
ABCDEFGHJK
WHT/YELPUR
LTBLU
ORGRED
BLU*
Isolation Module
ABCDEFGHJK
WHT
GRN
WHT/YEL
GRNYEL*
BLU*
REDORG
LTBLU
PURBRN
YEL*GRN
BLU/ORNLTBLUBRN
PURGRY
BLK/WHTWHT/YELBLK/ORN
BLK
From VehicleControl Harness
From VehicleLighting Harness
From DSVehicleHeadlamps
From PSVehicleHeadlamps
DKBLU/WHT
WHT
RED/WHTRED/BLK
DKBLU/RED
RED/YEL
BLU
RED
ABCDEFGHJK
SnowplowLightingHarness,
11 PinTURNPARK COM
HIGHLOWBEAM
PARKTURN
HIGHLOWBEAM
LOW-6A
TURN-8B
COM-11B
PARK
HIGH-4C
C
ABB
C
ABB
C
AB
C
AB
COM-5BLOW-1A
HIGH-3C
TURN-9BPARK
COM
TURN-9B
COM-11BPARK
LOW-6A
TURN-8B
COM-5B
COM
HIGH-4C
LOW-1A
HIGH-3CCOM
8
11109
7
56
34
12
89
1011
4
65
7
23
1 BLK/WHTBLK/ORNWHT/YEL
WHTBLU/ORN
BLKBLK/ORN
GRYPURBRN
LTBLU
A
CB
BLK/ORNBC
AConfigurationPlug or
Dust Cover
15 AmpPark/Turn
Fuse
7.5 AmpControl
Fuse
Battery
Port #1 Adapter
4
3
4
3
2
1
+–
For HB-3/HB-4Headlamps:To VehicleHeadlamps,Park/Turn, DRLand FactoryVehicleHarnesses
RED BLK
Located at Front of Vehicle
Snowplow Assembly
Passenger-Side Plow Headlamp
Driver-Side Plow Headlamp
Plow Module
–PumpMotor
MotorRelay
S1
S2
A
B
S10
S9
S8
S7
S6
RED
REDBLK
BLK
RED
REDDKBLU
DKGRN
GRY
BRN
YEL
BLK
RED
REDWHT
WHT
RED
TANWHT
S5
C
+
G
ABCDEF
K
HJ
G
ABCDEF
K
HJ
G
ABCDEF
K
HJ
G
ABCDEF
K
HJ
G
ABCDEF
K
HJ
G
ABCDEF
K
HJ
4 Amp Fuse: S5, S6, S7, S84 Amp Fuse: S9, S10
4 Amp Fuse: S1, S2, Motor Relay
4 Amp Fuse: Sense
CAUTIONOn 2-plug electrical systems, plug covers shall be used whenever snowplow is disconnected. Vehicle Battery Cable is 12-volt unfused source.
4-PORT ISOLATION MODULE – ELECTRICAL SCHEMATIC
2-PLUG WIDE-OUT™ SNOWPLOWS
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Lit. No. 22373, Rev. 07 November 1, 2008
37
1 Not shown. Requires adapter kit 26641.
Harness Part #26349
Location Wire ColorBlack Molded Female Plug1 GREEN2 BLUE3 YELLOW
Blue Male PlugA LT BLUE* / ORANGE**B ORANGE* / LT BLUE**C RED
* HB-1 ** HB-5
Splice Tap WiresLoose PURPLELoose BROWN
10-Position PlugA BLUE* / YELLOW**B GREENC —D REDE ORANGEF —G PURPLEH BROWNJ YELLOW* / BLUE**K LT BLUE
Blue Male Plug
Black Molded Female Plug
10-Position Plug forHarnesses #26349 and #26354
Plugs for Harnesses#26349 and #26354
HEADLAMP WIRING – 8436 HARNESS KIT (HB-1 OR HB-5) (1A/2A1)
Harness Part #26354
Location Wire ColorBlack Molded Female Plug1 GREEN2 BLUE3 YELLOW
Blue Male PlugA LT BLUE* / ORANGE**B ORANGE* / LT BLUE**C RED
* HB-1 ** HB-5
Splice Tap WiresLoose PURPLE
10-Position PlugA BLUE* / YELLOW**B GREENC —D REDE ORANGEF —G PURPLEH —J YELLOW* / BLUE**K LT BLUE
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Lit. No. 22373, Rev. 07 November 1, 2008
38
HEADLAMP WIRING – 8439 HARNESS KIT (2B/2D) (2E1)
10-Position Plug forHarnesses #26353 and #26356
Plugs for Harnesses#26353 and #26356
Male Plug
Female Plug
Harness Part #26353
Location Wire ColorFemale Plug
A LT BLUEB ORANGEC RED
Male PlugA GREENB YELLOWC BLUE
Splice Tap WiresLoose PURPLE
10-Position PlugA YELLOWB GREENC —D REDE ORANGEF —G PURPLEH —J BLUEK LT BLUE
Harness Part #26356
Location Wire ColorFemale Plug
A ORANGEB LT BLUEC RED
Male PlugA YELLOWB BLUEC GREEN
Splice Tap WiresLoose PURPLELoose BROWN
10-Position PlugA YELLOWB GREENC —D REDE ORANGEF —G PURPLEH BROWNJ BLUEK LT BLUE
1 Not shown. Requires adapter kit 27698.
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Lit. No. 22373, Rev. 07 November 1, 2008
39
HEADLAMP WIRING – 8442 HARNESS KIT (HB-1/HB-5 QUAD)
Harness Part #26372Location Wire ColorBlack Molded Female Plug (3 Wire)
1 GREEN2 BLUE3 YELLOW
Blue Male PlugA ORANGEB LT BLUEC RED
Black Molded Plug (2 Wire)1 GREEN2 —3 YELLOW
Blue Female Plug (2 Wire)A YELLOWB —C WHITE / YELLOW
Splice Tap WiresLoose BROWNLoose PURPLE
10-Position PlugA YELLOWB GREENC GREEND REDE ORANGEF WHITE / YELLOWG PURPLEH BROWNJ BLUEK LT BLUE
Harness Part #26370Location Wire ColorBlack Molded Female Plug (3 Wire)
1 GREEN2 BLUE3 YELLOW
Blue Male PlugA ORANGEB LT BLUEC RED
Black Molded Plug (2 Wire)1 GREEN2 —3 YELLOW
Blue Female Plug (2 Wire)A YELLOWB —C WHITE / YELLOW
Splice Tap WiresLoose PURPLE
10-Position PlugA YELLOWB GREENC GREEND REDE ORANGEF WHITE / YELLOWG PURPLEH —J BLUEK LT BLUE
Blue Male Plug
Black Molded Female Plug (3 Wire)
10-Position Plugfor Harness #26370 & #26372
Plugs for Harness #26370 & #26372
Blue Female Plug (2 Wire)
Black Molded Plug (2 Wire)
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Lit. No. 22373, Rev. 07 November 1, 2008
40
Plugs for Harness #26638
7-Pin Male Plug7-Pin Female Plug
10-Position Plug (Tag #3)for Harness #26638
10-Position Plug (Tag #4)for Harness #26638
Harness Part #26638
Location Wire Color7-Pin Female Plug
A BROWNB YELLOWC PURPLED PURPLEE GREENF —G BLACK / ORANGE
7-Pin Male PlugA BROWNB ORANGEC PURPLED PURPLEE REDF —G BLACK / ORANGE
10-Position Plug (Tag #3)A YELLOWB GREENC —D REDE ORANGEF —G PURPLEH —J BLUEK LT BLUE
Harness Part #26638
Location Wire Color10-Position Plug (Tag #4)
A YELLOWB GREENC —D —E —F —G PURPLEH BROWNJ —K LT BLUE
HEADLAMP WIRING – 8443 HARNESS KIT (2B/2D)
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Lit. No. 22373, Rev. 07 November 1, 2008
41
HEADLAMP WIRING – 27480-1/8437-1 HARNESS KITS (HB-3/HB-4)
Harness Part #26360
Location Wire Color2-Key Female Plug
A LT BLUEB GREEN
2-Key Male PlugA BLUEB RED
1-Key Female PlugA BLUEB YELLOW
1-Key Male PlugA BLUEB ORANGE
Splice Tap WiresLoose PURPLE
10-Position PlugA YELLOWB GREENC —D REDE ORANGEF —G PURPLEH —J LT BLUEK BLUE
Harness Part #26361
Location Wire Color2-Key Female Plug
A LT BLUEB GREEN
2-Key Male PlugA BLUEB RED
1-Key Female PlugA BLUEB YELLOW
1-Key Male PlugA BLUEB ORANGE
Splice Tap WiresLoose BROWNLoose PURPLELoose PINK*
10-Position Plug "B"A YELLOWB GREENC —D REDE ORANGEF PINKG PURPLEH BROWNJ LT BLUEK BLUE
2-Key Male Plug
2-Key Female Plug
10-Position Plug forHarnesses #26360 & #26361
Plugs for Harnesses#26360 & #26361
1-Key Male Plug
1-Key Female Plug
* Pink wire not used on 27480.
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Lit. No. 22373, Rev. 07 November 1, 2008
42
HEADLAMP WIRING – 27780/8438 HARNESS KITS (HB-3/HB-4)
Harness Part #26351
Location Wire Color2-Key Female Plug
A GREENB BLUE
2-Key Male PlugA REDB LT BLUE
1-Key Female PlugA YELLOWB BLUE
1-Key Male PlugA ORANGEB BLUE
Splice Tap WiresLoose PURPLELoose BROWNLoose PINK*
10-Position PlugA YELLOWB GREENC —D REDE ORANGEF PINKG PURPLEH BROWNJ BLUEK LT BLUE
Harness Part #26352
Location Wire Color2-Key Female Plug
A GREENB BLUE
2-Key Male PlugA REDB LT BLUE
1-Key Female PlugA YELLOWB BLUE
1-Key Male PlugA ORANGEB BLUE
Splice Tap WiresLoose PURPLE
10-Position PlugA YELLOWB GREENC —D REDE ORANGEF —G PURPLEH —J BLUEK LT BLUE
2-Key Male Plug
2-Key Female Plug
10-Position Plug forHarnesses #26351 & #26352
Plugs for Harnesses#26351 & #26352
1-Key Male Plug
1-Key Female Plug
* Pink wire not used on 8438.
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Lit. No. 22373, Rev. 07 November 1, 2008
43
HEADLAMP WIRING – 27890 HARNESS KIT (2B/2D OR 1A/2A)
10-Position Plug forHarnesses #27885 and #27886
Plugs for Harnesses#27885 and #27886
Male Plug
Female Plug
Harness Part #27885Location Wire Color
Female PlugA YELLOW* / GREEN**B GREEN* / YELLOW**C BLUED PURPLEE BROWN
* Rev. 0 ** Rev. 1
Male PlugA REDB ORANGEC LT BLUED PURPLEE BROWN
10-Position PlugA GREEN*
YELLOW**B YELLOW*
GREEN**C —D REDE ORANGEF —G PURPLEH BROWNJ BLUEK LT BLUE
* Rev. 0 ** Rev. 1
Harness Part #27886Location Wire Color
Female PlugA YELLOW* / GREEN**B GREEN* / YELLOW**C BLUED PURPLEE BROWN
* Rev. 0 ** Rev. 1
Male PlugA REDB ORANGEC LT BLUED PURPLEE BROWN
10-Position PlugA GREEN*
YELLOW**B YELLOW*
GREEN**C —D REDE ORANGEF —G PURPLEH —J BLUEK LT BLUE
* Rev. 0 ** Rev. 1
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Lit. No. 22373, Rev. 07 November 1, 2008
44
HEADLAMP WIRING – 28028 HARNESS KIT (HB-3/HB-4)
Harness Part #28030
Location Wire ColorFemale Plug
A GREENB YELLOWC LT BLUED BLUE
Male PlugA REDB ORANGEC BLUED BLUE
Splice Tap WiresLoose PURPLE
10-Position PlugA YELLOWB GREENC —D REDE ORANGEF —G PURPLEH —J LT BLUEK BLUE
10-Position Plug forHarnesses #28030 and #28032
Plugs for Harnesses #28030 and #28032
Male Plug
Female Plug
Harness Part #28032
Location Wire ColorFemale Plug
A GREENB YELLOWC LT BLUED BLUE
Male PlugA REDB ORANGEC BLUED BLUE
Splice Tap WiresLoose PURPLELoose BROWN
10-Position PlugA YELLOWB GREENC —D REDE ORANGEF —G PURPLEH BROWNJ LT BLUEK BLUE
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Lit. No. 22373, Rev. 07 November 1, 2008
45
HEADLAMP WIRING – 28400 HARNESS KIT (H13)
Harness Part #28242*
Location Wire ColorFemale Plug
A ORANGEB LT BLUEC RED
Male PlugA YELLOWB BLUEC GREEN
Splice Tap WiresLoose PURPLE
*Rev. 3 and Higher
10-Position PlugA YELLOWB GREENC —D REDE ORANGEF —G PURPLEH —J BLUEK LT BLUE
Plugs for Harnesses #28242 and #28244
10-Position Plug forHarnesses #28242 and #28244
Male Plug
Female Plug
Harness Part #28244*
Location Wire ColorFemale Plug
A ORANGEB LT BLUEC RED
Male PlugA YELLOWB BLUEC GREEN
Splice Tap WiresLoose PURPLELoose BROWN
*Rev. 3 and Higher
10-Position PlugA YELLOWB GREENC —D REDE ORANGEF —G PURPLEH BROWNJ BLUEK LT BLUE
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46
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Lit. No. 22373, Rev. 07 November 1, 2008
47
RELAY SYSTEM – HEADLAMP INDEX
Vehicle(s) Year(s) Headlamp TypeHeadlamp
Harness Part # DRLsPage No.
Chevrolet-GMCSilverado '03 HB-3/HB-4 64075 Yes 86
Silverado, Sierra(Low Side Drive System) '99–'02 HB-3/HB-4 26071 Yes 66
GM C4500, 5500 '03 2B, 1A/2A** 64126 Yes 59S10/S15 Blazer, Jimmy and
Pickup '98 HB-3/HB-4 62914 Yes 80
All (except S10/S15 Blazer, Jimmy, and Pickup) '98
2B 61546 Yes 59HB-3/HB-4 61716 Yes 60
K1500, K2500, K3500, C2500, C3500 Pickups/Chassis Cabs, Blazer, Jimmy, Tahoe, Yukon
'96,'972B 61546 Yes 59
HB-3/HB-4 61716 Yes 60
S10/S15 Blazer, Jimmy and Pickup; Sonoma '83–'97
2B 61546 No 56
2E62536* Yes 7761576 No 61
HB-3/HB-461586 Yes 7861716 No 57
Suburban, Blazer, Jimmy, Tahoe, Yukon '92–'95
2B61556 Yes 7761546 No 56
HB-3/HB-461586 Yes 7861716 No 57
K2500, K3500, K3500 HD Chassis Cabs '90–'95
2B61556 Yes 7761546 No 56
HB-3/HB-461586 Yes 7861716 No 57
LF/UF61581 modifi ed Yes 79
61581 No 57* Early GM applications used 61576 and 61556 harnesses spliced together.** DRL kit not required. Refer to relay connections only.
Vehicle(s) Year(s) Headlamp TypeHeadlamp
Harness Part # DRLsPage No.
Chevrolet-GMC
K1500, K2500, K3500, C2500, C3500 Pickups '88–'95
2B61556 Yes 7761546 No 56
HB3/HB461586 Yes 7861716 No 57
LF/UF61581 modifi ed Yes 79
61581 No 57
K2500, K3500, K3500 HD, R20 2WD Chassis Cabs '81–'89
1A/2A 61566 No 58
2B61556 Yes 7761546 No 56
Suburban, Blazer, Jimmy, R30 2WD, V30 4x4 '81–'91
1A/2A 61566 No 58
2B61556 Yes 7761546 No 56
LF/UF61581 modifi ed Yes 79
61581 No 57
K1500, K2500, K3500, C2500, C3500, V10, V20 Pickups '81–'87
1A/2A 61566 No 58
2B61556 Yes 7761546 No 56
Jeep
Cherokee, Wagoneer, Pioneer '84–'012B
61731 Yes 6261731 No 61
LF/UF 61581 No 57Wrangler '86–'03
2B 61731Yes 62
Comanche '86–'93 No 61
See Isolation Module Section for 2004 and newer applications.
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Lit. No. 22373, Rev. 07