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Transcript of Mgb wiring
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7/27/2019 Mgb wiring
1/34
dmpA PUBLICATION 2005
MGB, MGC, MGBV8
WIRING DIAGRAMS
AUTO-WIREdvancewww.advanceautowire.com
May be reproduced for personal, non-commercial use only
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+ -
BATTERIES
STARTER
SOLENOID
NY
NY
N
N
NG
GENERATOR
GENERATOR WARNING LAMP
REGULATOR
- +
U
LOWB
EAMS
IGNITIONSWITCH
HEADLIGHTSWITCH G
G
G G
P
W
W
N
W
N
RR
R
R
N
W
W
W
W
W
N
N
N
N
N
N
GAUGE
&DASH
ILLUMINATIONLAMPS
COURTESY/MAPLIGHT/SWITCH
RW
W
WR
GAUGELAMP
DIMMERCONTROL
RW
RWB
RWB
RWB
RWB
RWB
FUEL GAUGE & SENDER
GB
BRAKE SWITCH
G GP
GP
GP GP
FUEL PUMP
W
(LG/N)LG/N
LG/P
LG/P
LG/P
G
G
G
(GR)
RH REAR
RH FRONGW
GW
GR
LG/U RH TSINDICATORgreen
LH REAR
LH FRON
GR
G
G
G
G
LG/YLH TS
INDICATOR
GR
GW
green
(GW)
TURN SIGNALFLASHER
CIGAR LIGHTER
FUEL LEVEL
SPEEDOMETER
TACHOMETER
OIL PRESSURE/WATER TEMPERATURE
DIAGRAM 1 - 62/FROM BENTLEY A
FUSE BOX
RADIO
HIGHBEAMS
HIGH BEAM INDICATOR
UW
UW
UW
UR
UR
UR
UW
UR
UW
B
B
B
B
U
DIMMERSWITCH
RG
WIPER MOT
WIPERSWITCH
G
1 2
3 4
5 6
7 8
N
CIGARLIGHTER B
W
DISTRIBUTOR
IGNITIONCOIL
WB
FRONTPARKING
LIGHTS
TAILLIGHTS&
LICENSEPLATELAMPS
RR
R
RR
R
R
R
B
B
R
R
R
R
R
B
B HORNBUTTON
HORNS
P
P
PB
PB
PB
B
FLASH-TO-PASSSWITCH
*
HEATER FANSWITCH
HEATER FAN
GNGN
1
3
1 E2
D
F
OVERDRSOLEN
TRANSMISSIONINTERLOCK SWITCH
THROTTLE SWITCHY
Y
W
OVERDRIVEON - OFF SWITCH
YPYRYR
1 2
F
2
B F WL D E
1 2
3 4
5 6
7 8
C1C2
W1 W2
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S Slate
*These two switches are combined in
LP
B
*TS SWITCH
3 4
1 2
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+ -
BATTERIES
NY
NY
N
N
NG
GENERATOR
GENERATOR WARNING LAMP
REGULATOR
- +
U
LOWB
EAMS
IGNITIONSWITCH
HEADLIGHTSWITCH
G
G
G
G G
G
P
W
W
N
W
N
BG
R
R
R
R
N
W
W W
N
N
N
N
NN
N
GAUGE
&DASH
ILLUMINATIONLAM
PS
COURTESY/MAPLIGHT/SWITCH
RW
W
WR
GAUGELAMP
DIMMERCONTROL
RWB
RWB
RWB
RWB
RWB
G
FUEL GAUGE & SENDER
B I
GAUGE VOLTAGESTABILIZER
GBLG/G
BRAKE SWITCH
G GP
GP
GP GP
REVERSE LIGHTS& SWITCH
GN
GNGNG
G
FUEL PUMPW
W
(LG/N)LG/N
LG/P
LG/P
LG/P
G
(GR)
GR
LG/U RH TSINDICATORgreen
LG/YLH TS
INDICATOR
GW
green
(GW)
*TS SWITCH
L
TURN SIGNALFLASHER
B
CIGAR LIGHTER
FUEL LEVEL
SPEEDOMETER
TACHOMETER
OIL PRESSURE/WATER TEMPERATURE
DIAGRAM 2 - 64/FROM BENTLEY
FUSE BOX
B
GBBGREAR WINDOW DEFROSTER
& SWITCH - GT ONLY
RADIO
HIGHBEAMS
HIGH BEAM INDICATOR
UW
UW
UW
UR
UR
UR
UW
UR
UW
B
B
B
B
U
DIMMERSWITCH
RG
WIPER MOT
WIPERSWITCH
G
1 2
3 4
5 6
7 8
N
CIGARLIGHTER B
G
TACHOMETER
W
DISTRIBUTOR
IGNITIONCOIL
WB
FRONTPARKING
LIGHTS
TAILLIGHTS&
LICENSEPLATELAMPS
R
R
RR
R
R
R
B
B
R
R
R
RR
R
B
B HORNBUTTON
HORNS
P
P
PB
PB
PB
B
1 2
3 4
5 6
7 8
FLASH-TO-PASSSWITCH
*
HEATER FANSWITCH
HEATER FAN
GNGN
1
2
3
1 E2
B F WL D E
D
F
OVERDRSOLEN
TRANSMISSIONINTERLOCK SWITCH
THROTTLE SWITCHY
Y
W
OVERDRIVEON - OFF SWITCH
YPYRYR
C1C2
W1 W2
1 2
F
STARTER
SOLENOID
RH REAR
RH FRONGW
GW
LH REAR
LH FRON
GR
G
G
G
G
GR
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S Slate
*These two switches are combined in
3 4
1 2
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+-
BATTERIES
STARTER
NB
NG
-Ind
NNY ALTERNATOR
REGULATOR
+
-
+
F
U
LOWB
EAMS
IGNITIONSWITCH
HEADLIGHTSWITCH
G
G
G
G G
GP
P
W
W
N
W
N
BG
RR
R
R
N
W
W W
N
N
N
NN
GAUGE
&DASH
ILLUMINATIONLAM
PS
COURTESY/MAPLIGHT/SWITCH
RW
W
WR
GAUGELAMP
DIMMERCONTROL
RW
RWB
RWB
RWB
RWB
RWB
G
FUEL GAUGE & SENDER
B I
GAUGE VOLTAGESTABILIZER
GBLG/G
BRAKE SWITCH
G GP
GP
GP GP
REVERSE LIGHTS& SWITCH
GN
GNGN GNG
GG
FUEL PUMP
W
W
(LG/N)LG/NG
*TS SWITCH
L
TURN SIGNALFLASHER
B
CIGAR LIGHTER
FUEL LEVEL
SPEEDOMETER
TACHOMETER
OIL PRESSURE/WATER TEMPERATURE
DIAGRAM 3 - 67/FROM BENTLEY
FUSE BOX
B
GBBGREAR WINDOW DEFROSTER
& SWITCH - GT ONLY
RADIO
N
CIGARLIGHTER
B
HIGHBEAMS
HIGH BEAM INDICATOR
UW
UW
UW
UR
UR
UR
UW
UR
UW
B
B
B
B
U
DIMMERSWITCH
RG
G
TACHOMETER
W
DISTRIBUTOR
IGNITIONCOIL
WB
FRONTPARKING
LIGHTS
R
TAILLIGHTS&
LICENSEPLATELAMPS
R
R
R
R
R
R
R
R
B
B
R
R
R
R
R
B
B
HORNBUTTON
HORNS
P
P
PB
PB
PB
B
PW
PW
PW
B P
COURTESY LAMP& DOOR SWITCHES
1 2
3 4
5 6
7 8
FLASH-TO-PASSSWITCH
*
HEATER FANSWITCH
HEATER FAN
GNGN
1
2
3
OVERDRSOLENO
TRANSMISSIONINTERLOCK SWITCH
YRYW
OVERDRIVEON - OFF SWITCH
YP
- F + B+
1 2
F
G
G
G
G
(GR)
RH REAR
RH FRONGW
GW
GR
GR
LH REAR
LH FRON
GR
GR
GW
GW
B R
INDIgreen
GW
GR BL
INDIgreen
(GW)
WIPER MOU/LG
R/LG
N/LG
G
WIPERSWITCH
G
1 2
3 4
5 6
7 8
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
*These two switches are combined in
3 4
1 2
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*HORNBUTTON
P
P
PB
PB
PB
B
C2W1
W2 C1
+-
BATTERIES
U
LOWB
EAM
S
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
HEADLIGHTSWITCH
G
G
GG
G
G
GP
P
P
W
W
N
W
N
N
RG
BG
RG
RG
RG
RG
WN
WN
N
W
W
W
WW
NY
WG
N
N
N
NN
N
WR
GAUGE
&DASH
ILLUMINATIONLAM
PS
COURTESY/MAPLIGHT/SWITCH
RW
ALTERNATOR
W
WR
GAUGELAMP
DIMMERCONTROL
RW
WG
WGRWB
RWB
RWB
RWB
RWB
1 2
3
6
7
FRONTPARKING
LIGHTS
R
R
R
R
R
R
R
B
B
Left
TAIL,REARMARKER,&
LICENSEPLATELAMPS
R
R
R
R
R
B
Left
Right
Right
FUEL GAUGE & SENDER
B I
GAUGE VOLTAGESTABILIZER
GBLG/GLG/G
BRAKE SWITCH
G GP
GP
GP GP
REVERSE LIGHTS& SWITCH GN
GNGN GNG
G G
HEATER FANSWITCH
HEATER FAN MOTORGYGY
G
FUEL PUMP
W
OVERDRIVESOLENOID
TRANSMISSIONINTERLOCK SWITCH
YRYW
W
OVERDRIVEON - OFF SWITCH
(LG/N)LG/NG
(GR)
GR
GR
GW
GW
(GW)
*TS SWITCH
L
TURN SIGNALFLASHER
B
R
TACHOMETER
4
CIGAR LIGHTER
FUEL LEVEL
SPEEDOMETER
TACHOMETER
OIL PRESSURE/WATER TEMPERATURE
DIAGRAM 5 - 68/FROM BENTLEY
W
DISTRIBUTOR
IGNITIONCOIL
WB
8
-+
FUSE BOX
B
GBBGREAR WINDOW DEFROSTER
& SWITCH - GT ONLY
RADIO
CIGARLIGHTER
B
NY
IndInd
NN
+B+
HIGHBEAMS
HIGH BEAM INDICATOR
UW
UW
UW
UR
UR
(UR)
(UW)
UR
UW
B
B
B
B
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
*
1 2
3 4
5 6
7 8
5
RP
23
4
5
67
1
YP
WIPER MOTOR
U/LG
R/LG
N/LG
G
G
WIPERSWITCH
1 2
3 4
5
7 8
G
G
G
G
RH REAR
RH FRONGW
GW
LH REAR
LH FRON
GR
GR
B RINDIgreen
GW
GR BL
INDIgreen
PW
PW
PW
B P
COURTESY LAMP& DOOR SWITCHES
6
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec*These three switches are combined i
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*HORNBUTTON
P
P
PB
PB
PB
B
C2W1
W2 C1
+-
BATTERIES
U
HIGHBEAMS
LOWB
EAM
S
HIGH BEAM INDICATOR
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
HEADLIGHTSWITCH
UW
UW
UW
UR
UR
G
G
GG
G
G
G
P
P
P
P
PP
W
N
N
N
N
RG
RG
RG
RG
WG GK
WN
WN
N
W
W
W
WW
NY
(UR)
(UW)
UR
UW
WG
N
N
N
NN
N
WR
GAU
GE
&DASH
ILLUMIN
ATIONLAMPS
RW
B
B
B
B
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
*
W
WR
GAUGELAMP
DIMMERCONTROL
RW
RWB
RWB
RWB
RWB
RWB
1 2
3
6
7
FRONTPARKING
LIGHTS
R
R
R
R
R
R
R
B
B
Left
TAIL,REARMARKER,&
LICENSEPLATELAMPS
R
R
R
R
R
B
Left
Right
RightFUEL GAUGE & SENDER
B I
GAUGE VOLTAGESTABILIZER
GBLG/G
BRAKE SWITCH
G GP
GP
GP GP
REVERSE LIGHTS& SWITCH GN
GNGN GNG
GG
HEATER FANSWITCH
HEATER FAN MOTORGYGY
GK
FUEL PUMP
W
OVERDRIVESOLENOID
TRANSMISSIONINTERLOCK SWITCH
YPYRYW
W
OVERDRIVEON - OFF SWITCH
(LG/N)LG/NG
*TS SWITCH
L
TURN SIGNALFLASHER
B
R
P
P
P
TACHOMETER
PW
PW
TRUNK/HATCHLAMP & SWITCHB
B
PW
PW
PW
4
CIGAR LIGHTER
FUEL LEVEL
SPEEDOMETER
TACHOMETER
OIL PRESSURE/WATER TEMPERATURE
DIAGRAM 6 - 70/FROM BENTLEY
W
DISTRIBUTOR
IGNITIONCOIL
WB
RADIO
8
-+
FUSE BOX
1
2
3
4
CIGARLIGHTER
B
GK
GK
GK GK
GK
GK GK
NY
IndInd
NN
+B+
PWB
COURTESY/MAPLAMP & SWITCHES
1 2
3 4
5 6
7 8
WIPER MOTOR
U/LG
R/LG
N/LG
G
WIPERSWITCH
1 2
3 4
5
7 8
6
B
GBBGREAR WINDOW DEFROSTER
& SWITCH - GT ONLY
(GR)
GR
GR
GW
GW
(GW)
G
G
G
G
RH REAR
RH FRONGW
GW
LH REAR
LH FRON
GR
GR
B RINDIgreen
GW
GR BL
INDIgreen
5
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec*These two switches are combined in
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7/27/2019 Mgb wiring
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+-
BATTERIES
U
HIGH
BEAMS
LOWB
EAMS
HIGH BEAM INDICATOR
IGNITIONSWITCH
ALTERNATOR WARNINGLAMP
STARTER
UW
UW
UW
UR
UR
W
W
W
W
W
W
N
N
N
N
WR
W
W
W
W
WNB
NG
Ind
(UR)
(UW)
UR
UW
N
N
NN
B
B
B
B
NNY ALTERNATOR
REGULATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
*
+
W
WR
1
G
G
G
GAUGE VOLTAGESTABILIZER
GU
LG/G
TEMP GAUGE & SENDER
B I
LG/G
LG/G
FUEL GAUGE & SENDER
GB
WASHER MOT
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
G
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
G
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(G)
WIPER/WASHERSWITCH
G
G
OVERDRIVESOLENOID
TRANSMISSIONINTERLOCK SWITCH
FUEL PUMP
YPY YRW
WW
OVERDRIVEON - OFF SWITCH
(LG/N)
HAZARDFLASHER
LG/N
LG/N
LG/P
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
GR
B
B
RINDIgreen
red
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
green
(GW)
*TS SWITCH
PL
W
DISTRIBUTOR
IGNITIONCOIL
WB
-+
FUSE BOX
GAUGE
&DASH
ILLUMINATIONLAMP
S
RW
RW
RW
B
RWRW
RW
RW
RW
B
B
B
B
CIGAR LIGHTER
FUEL LEVEL
WATER TEMPERATURE
SPEEDOMETER
TACHOMETER
OIL PRESSURE
1
23
*HORNBUTTON
HORNS
P
P
PB
PB
PB
B
P
PW
WG
WG
PW
PW
B P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTER
B
BRAKE FAILURESWITCH & LAMP
P
BW
B
R
R
R
GAUGELAMP
SWITCHRW
HEADLIGHTSWITCH R
R
34HEATER FAN
SWITCH
HEATER FAN MOTOR
GY1
34
G
G
HAZARDSWITCH
LG/N G
G
G
G
G
GR
GW
GW
GW
GW
GWL
TURN SIGNALFLASHER
B
2
3
4
5
6
1
G
TACHOMETER
WB
WB
WB WB
RN
RN
REAR WINDOW DEFROSTER& SWITCH - GT ONLY
12
34
DIAGRAM 7 - 67/FROM BENTLEY
RADIO
R RG B
B+
43
2
FRONTPARKING
LIGHTS
R
TAILLIGHTS&
LIC
ENSEPLATELAMPS
R
R
R
RR
R
R
R
B
B
R
R
R
R
R
R
R
B
B
2 1
BRAKE SWITCH
G GP
GP
GP
B
- F + B+
OIL PRESSURE GAGE & SE
WN
2
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* and two switches co indicate /three
-
7/27/2019 Mgb wiring
9/34
+-
BATTERIES
U
HIGH
BEAMS
LOWB
EAMS
HIGH BEAM INDICATOR
IGNITIONSWITCH
ALTERNATOR WARNINGLAMP
STARTER
UW
UW
UW
UR
UR
W
W
W
W
W
N
WR
W
W
W
W
W
NY
NY
IndInd
(UR)
(UW)
UR
UW
N
N
N N
N
B
B
B
B
NN
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
*
+
W
WR
1
G
G
G
GAUGE VOLTAGESTABILIZER
GULG/G
TEMP GAUGE & SENDER
FUEL GAUGE & SENDER
B I GBLG/G
WASHER MOT
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
G
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
G
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(G)
WIPER/WASHERSWITCH
G
G
OVERDRIVESOLENOID
TRANSMISSIONINTERLOCK SWITCH
FUEL PUMP
YPY YRW
WW
OVERDRIVEON - OFF SWITCH
W
DISTRIBUTOR
IGNITIONCOIL
WB
-+ FUSE BOX
GAUGE
&DASH
ILLUMINATIONLAMP
S
RW
RW
RW
B
RWRW
RW
RW
RW
B
B
B
B
1
23
*HORNBUTTON
HORNS
P
P
PB
PB
PB
B
P
WG
WG
CIGARLIGHTER
B
BRAKE FAILURE& TEST SWITCH
& LAMP
P
BW
BW
B
R
R
R
GAUGELAMP
SWITCHRW
HEADLIGHTSWITCH R
34HEATER FAN
SWITCH
HEATER FAN
GY12
34
GG
G
OIL PRESSUREGAGE & SENDER
WNB
TACHOMETER
DIAGRAM 8 - 68/FROM BENTLEY
RADIO
R RG B
B+
43
2
FRONTPARKING
LIGHTS
R
TAILLIGHTS&
LIC
ENSEPLATELAMPS
R
R
R
RR
R
R
R
B
B
R
R
R
R
R
R
R
B
B
2 1
BRAKE SWITCH
G GP
GP
GP
(LG/N)
HAZARDFLASHER
LG/N
LG/N
LG/P
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
GR
B
B
RINDIgreen
red
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
green
(GW)
*TS SWITCH
PL
G
G
HAZARDSWITCH
LG/N G
G
G
G
G
GR
GW
GW
GW
GW
GWL
TURN SIGNALFLASHER
B
2
3
4
5
6
1
B
WB
RN
REAR WINDOW DEFROSTER& SWITCH - GT ONLY
WB
12
34
PW
PW
PW
B P
COURTESY LAMP& DOOR SWITCHES
CIGAR LIGHTER
FUEL LEVEL
WATER TEMPERATURE
SPEEDOMETER
TACHOMETER
OIL PRESSURECOLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* and two switches co indicate /three
-
7/27/2019 Mgb wiring
10/34
*HORNBUTTON
HORNS
P
P
PB
PB
PB
B
C2W1
W2 C1
+-
BATTERIES
U
HIGHBEAMS
LOWB
EAM
S
HIGH BEAM INDICATOR
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
UW
UW
UW
UR
UR
G
GG
G
G
G
G
G
PP
P
W
N
N
N
N
RG
WN
WN
W
W
W
W
W
W
NY
NY
IndInd
(UR)
(UW)
UR
UW
WG
N
N
N
NN
N
PK
WR
B
B
B
B
NN
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
*
+W
WR
1
3
5
R
R
R
R
G
GAUGE VOLTAGESTABILIZER
GULG/G
TEMP GAUGE & SENDER
FUEL GAUGE & SENDER
B I GBLG/GLG/G
WASHER MOT
BRAKE FAILURE& TEST SWITCH
& LAMP
BRAKE SWITCH
G GP
GP
GP
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
G
G
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
G
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(G)
WIPER/WASHERSWITCH
G
G
OVERDRIVESOLENOID
TRANSMISSIONINTERLOCK SWITCH
FUEL PUMP
YPY YRW
WW
OVERDRIVEON - OFF SWITCH
LH DOORSWITCH
P
P
P P
P P
PW
WG
PW
PW
B
P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTER
B
BW
BW
B
W
DISTRIBUTOR
IGNITIONCOIL
WB
8
BUZZER
-+
FUSE BOX
GAUGE
&DASH
ILLUMINATIONLAMP
S
RW
RW
RW
B
RW
RW
RW
RW
RW
B
B
B
B
CIGAR LIGHTER
FUEL LEVEL
WATER TEMPERATURE
SPEEDOMETER
TACHOMETER
OIL PRESSURE
1 2
35
N
FRONTPARKING
LIGHTS
R
R
RB
BLeft
Right
TAILLIGHTS&
LICENSEPLATELAMPS
R
R
RR
R
R
R
B
B
Left
Right
R
RW
PK PG
B
B
B
B
B
U
U
UU
U
U
U
HEADLIGHTSWITCH RG
N
34
HEATER FANSWITCH
HEATER FAN
GY1
34
GG
G
OIL PRESSUREGAGE & SENDER
WNB
TACHOMETER
2
4
7
DIAGRAM 9 - 69/FROM BENTLEY
RADIO
RG
RG
RG
RG RP
GAUGELAMP
SWITCH
WG
WB
RN
REAR WINDOW DEFROSTER& SWITCH - GT ONLY
WB
12
34
(LG/N)
HAZARDFLASHER
LG/N
LG/N
LG/P
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
GR
B
B
RINDIgreen
red
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
green
(GW)
*TS SWITCH
P
G
G
HAZARDSWITCH
LG/N G
G
G
G
G
GR
GW
GW
GW
GW
GWL
TURN SIGNALFLASHER
2
3
4
5
6
1
B L
B
2
6
FRONT&REAR
SIDEMARKERS
2 1
B+
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* and two switches co indicate /three
-
7/27/2019 Mgb wiring
11/34
HORNBUTTON
HORNS
P
P
PB
PB
PB
B
C2W1
W2 C1
+-
BATTERIES
U
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
G
GG
G G
P
P
P
P
P
W
N
N
N
N
RG
WG GK
WN
WN
W
W
W
W
W
W
NY
NY
IndInd
(UR)
(UW)
WG
N
N
N
NN
N
PK
WR
NN
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
+W
WR
1
3
5
R
R
R
R
TEMP GAUGE & SENDER
FUEL GAUGE & SENDER
GAUGE VOLTAGESTABILIZER
GU
GBLG/GG B I LG/G
LG/G
WASHER MOT
BRAKE SWITCH
BRAKE FAILURE& TEST SWITCH
& LAMP
G GP
GP
GP
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
GG
HEATERF
AN
SWITCH
HEATER FAN MOTORGK
GK
GKGK
GK
GK GK
GY
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
GK
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(GK)
WIPER/WASHERSWITCH
GK
GK
OVERDRIVESOLENOID
TRANSMISSIONINTERLOCK SWITCH
FUEL PUMP
YPY YRW
WW
OVERDRIVEON - OFF SWITCH
P
LH DOORSWITCH
P
WG
P
P
P
P P
P P
PW
PW
TRUNK/HATCHLAMP & SWITCH
PW
PW
PW
B
B
B
P
P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTER
B
BW
BW
B
W
DISTRIBUTOR
IGNITIONCOIL
WB
RADIO
8
BUZZER
-+
FUSE BOX
GAUGE
&DASH
ILLUMINATIONLAMP
S
RW
RW
RW
B
RW
RW
RW
RW
RW
B
B
B
B CIGAR LIGHTER
FUEL LEVEL
WATER TEMPERATURE
SPEEDOMETER
TACHOMETER
OIL PRESSURE
1 2
35
DIAGRAM 10 - 70FROM BENTLEY
N
FRONTPARKING
LIGHTS
R
R
RB
B
Left
Right
TAILLIGHTS&
LICENSEPLATELAMPS
R
R
RR
R
R
R
B
B
Left
Right
R
RG
RGGAUGELAMP
DIMMERCONTROL
RW
PK PG
HEADLIGHTSWITCH RG
N
12
34
1 2
3 4
GG
G
OIL PRESSUREGAGE & SENDER
WNB
TACHOMETER
2
4
6
7
(LG/N)
HAZARDFLASHER
LG/N
LG/N
LG/P
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
GR
B
B
RINDIgreen
red
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
green
(GW)
*TS SWITCH
P
G
G
HAZARDSWITCH
LG/N G
G
G
G
G
GR
GW
GW
GW
GW
GWL
TURN SIGNALFLASHER
2
3
4
5
6
1
B L
B
BWB
RN
REAR WINDOW DEFROSTER& SWITCH - GT ONLY
12
34
GT
ROADSTER
B
B
B
B
U
U
UU
U
U
U
FRONT&REAR
SIDEMARKERS
HIGHBEAMS
LOWB
EAM
S
HIGH BEAM INDICATOR
UW
UW
UW
UR
UR
UR
UW
B
B
B
B
*
B+
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* and two switches combine indicate
-
7/27/2019 Mgb wiring
12/34
HORNBUTTON
P
P
PB
PB
PB
B
C2W1
W2 C1
+-
BATTERIES
HIGHBEAMS
LOWB
EAM
S
HIGH BEAM INDICATOR
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
HEADLIGHT
SWITCH
UW
UW
UW
UR
UR
G
G
GG
G
G
G
P
P
P
P
P
W
N
N
N
N
RG
RG
WG GK
WN
WN
W
W
W
WW
NYInd
(UR)
(UW)
UR
UW
WG
N
N
N
NN
N
WR
GAU
GE
&DASH
ILLUMINATIONLAMPS
RW
B
B
B
B
N
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
*
+
W
WR
GAUGELAMP
DIMMERCONTROL
RW
RWB
RWB
RWB
RWB
RWB
1 2
3
6
7
FRONTPARKING&
MARKERLIGHTS
R
R
R
R
R
R
RB
B
Left
Right
TAIL,REARMARKER,&
LICENSEPLATELAMPS
R
R
R
R
R
B
Left
Right
FUEL GAUGE & SENDER
B I
GAUGE VOLTAGESTABILIZER
GBLG/GLG/G
BRAKE SWITCH
G GP
GP
GP GP
REVERSE LIGHTS& SWITCH
GN
GNGN GNG
GG
HEATER FANSWITCH
HEATER FAN MOTOR
GYGY
GK
FUEL PUMP
W
OVERDRIVESOLENOID
TRANSMISSIONINTERLOCK SWITCH
YPYRYW
W
OVERDRIVEON - OFF SWITCH
R
P
P
P
P
P
TACHOMETER
PW
PW
TRUNK/HATCHLAMP & SWITCHB
B
P
PW
PW
PW
B
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTER
B
4
CIGAR LIGHTER
FUEL LEVEL
SPEEDOMETER
TACHOMETER
OIL PRESSURE/WATER TEMPERATURE
DIAGRAM 11 - 71FROM BENTLEY E
W
DISTRIBUTOR
IGNITIONCOIL
WB
RADIO
8
-+
FUSE BOX
1
2
3
4
GK
GK
GK GK
GK
GK GK
WIPER MOTOR
U/LG
R/LG
N/LG
G
WIPERSWITCH
1 2
3 4
5
7 8
6
(LG/N)LG/NG
*TS SWITCH
L
TURN SIGNALFLASHER
B
(GR)
GR
GR
GW
GW
(GW)
G
G
G
G
RH REAR
RH FRONGW
GW
LH REAR
LH FRON
GR
GR
B RINDIgreen
GW
GR BL
INDIgreen
HEADLIGHTSWITCH
5
U
RG
RG
N1 2
3 4
5 6
7 8
BWB
RN
REAR WINDOW DEFROSTER& SWITCH - GT ONLY
12
34
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* two switches combined inindicates
-
7/27/2019 Mgb wiring
13/34
BWB
RN
REAR WINDOW DEFROSTER& SWITCH - GT ONLY
12
34
HORNBUTTON
HORNS
P
P
PB
PB
PB
B
C2W1
W2 C1
+-
BATTERIES
HIGHBEAMS
LOWB
EAM
S
HIGH BEAM INDICATOR
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
UW
UW
UW
UR
UR
G
G
GG
G
G
G
G
G
G
G
G
G
G
P
P
P
P
P
W
N
N
N
N
RG
RG
RG
WG GK
WN
WN
W
W
W
W
W
W
NYInd
(UR)
(UW)
UR
UW
WG
N
N
N
N
NN
N
PK
WR
B
B
B
B
N
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
*
+W
WR
GAUGELAMP
DIMMERCONTROL
RW
1 2
3
5 6
7
R
R
R
R
TEMP GAUGE & SENDER
FUEL GAUGE & SENDER
B I
GAUGE VOLTAGESTABILIZER
GU
GBLG/GLG/G
LG/G
BRAKE SWITCH
BRAKE FAILURE& TEST SWITCH
& LAMP
G GP
GP
GP
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
GG
FUEL PUMP
WW
(LG/N)
HAZARDFLASHER
HAZARDSWITCH
LG/NLG/P LG/N
LG/N
LG/P
G
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
GR
GR
B
B
RINDIgreen
red
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
GW
GW
GW
GW
green
(GW)
*TS SWITCH
L
TURN SIGNALFLASHER
B
12
34
7
P
LH DOORSWITCH
PKP
P
P
P
P
PG
P P
P P
TACHOMETER
PW
PW
TRUNK/HATCHLAMP & SWITCH
PW
PW
PW
B
B
B
P
P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTER
B
BW
BW
B
4
B L
HORNBUTTON
HORNS
P
P
PB
PB
PB
B
W
DISTRIBUTOR
IGNITIONCOIL
WB
8
BUZZER
-+
FUSE BOX
8
1 2
35
DIAGRAM 12 - 71FROM BENTLEY E
OVERDRIVESOLENOID
TRANSMISSIONINTERLOCK SWITCH
YPY YRW
OVERDRIVEON - OFF SWITCH
WASHER MOT
HEATERFAN
SWITCH
HEATER FAN MOTORGK
GK
GKGK
GK
GK GK
GY
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
GK
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(GK)
WIPER/WASHERSWITCH
GK
GK
RADIO
1 2
3 4
GAUGE
&DASH
ILLUMINATIONLAMP
S
RW
RW
RW
B
RW
RW
RW
RW
RW
B
B
B
B CIGAR LIGHTER
FUEL LEVEL
WATER TEMPERATURE
SPEEDOMETER
TACHOMETER
OIL PRESSURE
U
HEADLIGHTSWITCH
N
12
34RG
FRONTPARKING
LIGHTS
R
R
RB
B
Left
Right
TAILLIGHTS&
LICENSEPLATELAMPS
R
R
RR
R
R
R
B
B
Left
Right
R
B
B
B
B
U
U
UU
U
U
U
FRONT&REAR
SIDEMARKERS
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* and two switches combine indicate
-
7/27/2019 Mgb wiring
14/34
HORNBUTTON
HORNS
P
P
PB
PB
PB
B
C2W1
W2 C1
+-
BATTERIES
U
HIGHBEAMS
LOWB
EAMS
HIGH BEAM INDICATOR
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
HEADLIGHTSWITCH
UW
UW
UW
UR
UR
G
G
GG
G
G G
P
P
P
P
P
W
N
N
N
N
RG
RG
RG
RG
WG GK
WN
WN
N
W
W
W
W
W
W
NYInd
(UR)
(UW)
UR
UW
WG
N
N
N
N
NN
N
PK
WR
GAUGE
&DASH
ILLUMINATIONLAMPS
RW
RW
RW
B
B
B
B
B
N
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
*
1
2
3
+W
WR
GAUGELAMP
DIMMERCONTROL
RW
RW
RW
RW
RW
RW
B
B
B
B
1 2
3
5 6
7
FRONTPARKING&
MARKERLIGHTS
R
R
R
R
R
R
R
R
R
B
B
B
B
Left
Right
TAIL,REARMARKER,&
LICENSEPLATELAMPS
R
R
R
R
R
R
R
R
R
B
B
Left
Right
TEMP GAUGE & SENDER
FUEL GAUGE & SENDER
GU
GBLG/GG B I
GAUGE VOLTAGESTABILIZER
LG/G
LG/G
WASHER MOT
BRAKE SWITCH
BRAKE FAILURE& TEST SWITCH
& LAMP
G GP
GP
GP
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
GG
2
3
HEATERFAN
SWITCH HEATER FAN MOTORGK
GK
GKGK
GK
GK GK
GYGY
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
GK
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(GK)
WIPER/WASHERSWITCH
GK
GK
OVERDRIVESOLENOID
TRANSMISSIONINTERLOCK SWITCH
FUEL PUMP
YPYYW
WW
OVERDRIVEON - OFF SWITCH
LG/P
R
P
LH DOORSWITCH
PK
SEATBELTWARNING LAMP
SEATBELT BUCKLESWITCHES
G
P
P
P
P
P
NR
NRNR
NR
PG
PG
LG/W
LG/W
B
P P
P P
TACHOMETER
PW
PW
TRUNK/HATCHLAMP & SWITCH
PW
PW
PW
B
B
B
P
P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTER
B
BW
BW
B
4
CIGAR LIGHTER
FUEL LEVEL
WATER TEMPERATURE
SPEEDOMETER
TACHOMETER
OIL PRESSURE
HORNBUTTON
HORNS
P
P
PB
PB
PB
B
W
DISTRIBUTOR
IGNITIONCOIL
WB
RADIO
8
GEARBOX SWITCH
PASSENGER SEATSWITCH
DRIVER
PASSENGER
BUZZER
-+
FUSE BOX
G3
B
WB
WB
RN
RN
REAR WINDOW DEFROSTER& SWITCH - GT ONLY
2
1 2
35
DIAGRAM 13 - 71FROM BENTLEY E
G
G
G
G
G
(LG/N)
HAZARDFLASHER
HAZARDSWITCH
LG/NLG/P LG/N
LG/N
LG/P
G
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
GR
GR
B
B
RINDIgreen
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
GW
GW
GW
GW
green
(GW)
*TS SWITCH
L
TURN SIGNALFLASHER
B
12
34
7
B L
8
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* and two switches combine indicate
-
7/27/2019 Mgb wiring
15/34
HORNBUTTON
P
P
PB
PB
PB
B
C2W1
W2 C1
+-
BATTERIES
HIGHBEAMS
LOWB
EAMS
HIGH BEAM INDICATOR
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
UW
UW
UW
UR
UR
G
GG
G
G
G
P
P
P
P
P
W
W
N
N
N
RG
RG
WG GK
WN
WN
W
W
W
WW
(UR)
(UW)
UR
UW
WG
N
N
N
NN
WR
GAUGE
&DASH
ILLUMINATIONLAMPS
RW
B
B
B
B
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
*
W
WR
GAUGELAMP
DIMMERCONTROL
RW
RWB
RWB
RWB
RWB
RWB
FRONTPARKING&
MARKERLIGHTS
R
R
R
R
R
R
RB
B
Left
Right
TAIL,REARMARKER,&
LICENSEPLATELAMPS
R
R
R
R
R
B
Left
Right
FUEL GAUGE & SENDER
B I
GAUGE VOLTAGESTABILIZER
GBLG/GLG/G
BRAKE SWITCH
G GP
GP
GP GP
REVERSE LIGHTS& SWITCH
GN
GNGN GNG
GG
FUEL PUMP
W
OVERDRIVESOLENOID
TRANSMISSIONINTERLOCK SWITCH
YPYRYW
W
OVERDRIVEON - OFF SWITCH
R
P
P
P
P
P
G
TACHOMETER
PW
PW
TRUNK/HATCHLAMP & SWITCHB
B
P
PW
PW
PW
B
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTER
B
CIGAR LIGHTER
FUEL LEVEL
SPEEDOMETER
TACHOMETER
OIL PRESSURE/WATER TEMPERATURE
DIAGRAM 14 - 72FROM BENTLEY
W
DISTRIBUTOR
IGNITIONCOIL
WB
WB
WB
-+
FUSE BOX
GK GK
GK GK
(LG/N)LG/NG
*TS SWITCH
L
TURN SIGNALFLASHER
B
(GR)
GR
GR
GW
GW
(GW)
G
G
G
G
RH REAR
RH FRONGW
GW
LH REAR
LH FRON
GR
GR
B RINDIgreen
GW
GR BL
INDI
HEADLIGHTSWITCH
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* two switches combined inindicates
NYInd
NN
B at t + +
G3
B
WB
WB
RN
RN
REAR WINDOW DEFROSTER& SWITCH - GT ONLY
2
WIPER MOTOR
U/LG
R/LG
N/LG
GK
WIPERSWITCH
GK
1
34
5
2
RADIO
GK
1
2
3
HEATER FANSWITCH
HEATER FANMOTOR
GY
U
RG
N
1
3
green
12
3
5
2
1 2
3
7
4
8
5 6
-
7/27/2019 Mgb wiring
16/34
G
C2W1
W2 C1
+-
BATTERIES
U
HIGHBEAMS
LOWB
EAMS
HIGH BEAM INDICATOR
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
HEADLIGHTSWITCH
UW
G
GG
G
G
G
G
G
WB
P
P
P
P
P
W
N
N
N
W
RG
RG
RG
RG
RG
WN
WNWR
N
NW
W
W
NYIndbatt
(UR)
(UW)
UR
UW
WG
WG
N
N
N
NN
N
PK
GAUGE
&DASH
ILLUMINATIONLAMPS
RW
RW
RW
RW
RW
RW
RW
B
B
B
ANTI RUN-ONVALVE & SWITCH
NN
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
*
+
S
W
WR
GAUGELAMP
DIMMERCONTROL
RW
RW
RW
RW
RW
RW
RW
B
B
B
B
B
B
B
B
1
3
FRONTPARKING&
MARKERLIGHTS
R
R
R
R
R
R
R
R
R
B
B
B
B
Left
Right
TAIL,REARMARKER,&
LICENSEPLATELAMPS
R
R
R
R
R
R
R
R
R
B
B
Left
Right
TEMP GAUGE & SENDER
FUEL GAUGE & SENDER
B I
GAUGE VOLTAGESTABILIZER
GU
GBLG/GLG/G
LG/G
WASHER MOT
BRAKE SWITCH
BRAKE FAILURE& TEST SWITCH
& LAMP
G GP
GP
GP
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
GG
2
3
2
HEATERFAN
SWITCH
HEATER FAN MOTOR
GK
GK
GK
GY
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
GK
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(GK)
WIPER/WASHERSWITCH
GK
GK
OVERDRIVESOLENOID
TRANSMISSIONINTERLOCK SWITCH
FUEL PUMP
YPYY
W
W W
OVERDRIVEON - OFF SWITCH
R
P
LH DOORSWITCH
PG
PK
SEATBELTWARNING LAMP
SEATBELT BUCKLESWITCHES
G
P
P
P
P
NR NR
NR
NR
PG
PG
PG
LG/W
LG/O
P
TACHOMETER
SP SY
PW
PW
TRUNK/HATCHLAMP & SWITCH
PW
PW
PW
B
B
B
P
P P
P
P
P
P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTER
B
BW
BW
B
4
CIGAR LIGHTER
HEATER FAN
FUEL LEVEL
TEMPERATURE
SPEEDOMETER
TACHOMETER
HEADLIGHT SWITCH
OIL PRESSURE
HAZARD SWITCH
HEATER CONTROL
HEATER CONTROL
HORNBUTTON
HORNS
P
P
PB
PB
PB
B
W
DISTRIBUTOR
IGNITIONCOIL
WB
WB
RADIO
GEARBOX SWITCH
SEAT BUTTSWITCH
BUZZER
-+
FUSE BOX
LG/P
G
G
G
G
G
(LG/N)
HAZARDFLASHER
HAZARDSWITCH
LG/NLG/P LG/N
LG/N
LG/P
G
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
GR
GR
B
B
RINDIgreen
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
GW
GW
GW
GW
green
(GW)
*TS SWITCH
L
TURN SIGNALFLASHER
B
12
34
5
B L
6
3
1
6
7
5
2
G
B
WB
WB
RN
RN
REAR WINDOW DEFROSTER& SWITCH - GT ONLY
2
3
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* and two switches combine indicate
8
DIAGRAM 15 - 72FROM BENTLEY
16
4 2
5
3
UW
UW
UR
UR
B
B
B
B
PSNGR PSNGR
DRIVER
-
7/27/2019 Mgb wiring
17/34
-
7/27/2019 Mgb wiring
18/34
G
C2W1
W2 C1
+-
BATTERIES
U
HIGHBEAMS
LOWB
EA
MS
HIGH BEAM INDICATOR
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
HEADLIGHTSWITCH
UW
UW
UW
UR
UR
G
GG
G
G
G
G
G
WB
P
P
P
P
P
W
N
N
N
N
NP
WRG
RG
RG
RG
RG
WN
WNYK
N
NW
W
W
NYIndbatt
(UR)
(UW)
UR
UW
(WG)
N
(N)
N
N
NN
N
(PK)
WR
GAUGE
&DASH
ILLUMINATIONLAMPS
RW
RW
RW
RW
RW
RW
RW
B
B
B
B
B
B
ANTI RUN-ONVALVE & SWITCH
NN
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
*
+
(S)
(W)
(WR)
GAUGELAMP
DIMMERCONTROL
RW
RW
RW
RW
RW
RW
RW
B
B
B
B
B
B
B
B
1
3
FRONTPARKING&
MARKERLIGHTS
R
R
R
R
R
R
R
R
R
B
B
B
B
Left
Right
TAIL,REARMARKER,&
LICENSEPLATELAMPS
R
R
R
R
R
R
R
R
R
B
B
Left
Right
TEMP GAUGE & SENDER
FUEL GAUGE & SENDER
B I
GAUGE VOLTAGESTABILIZER
GU
GBLG/GLG/G
LG/G
WASHER MOT
BRAKE SWITCH
BRAKE FAILURE& TEST SWITCH
& LAMP
G GP
GP
GP
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
GG
2
3
HEATERF
AN
SWITCH
HEATER FAN MOTORGK
GY
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
GK
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(GK)
WIPER/WASHERSWITCH
GK
GK
OVERDRIVESOLENOID
TRANSMISSIONINTERLOCK SWITCH
FUEL PUMP
YPYY
W
W W
OVERDRIVEON - OFF SWITCH
R
P
LH DOORSWITCH
PG
PK
SEATBELTWARNING LAMP
SEATBELT BUCKLESWITCHES
G
G
P
P
P
P
P
YP
YK
YU
YU
YG
YG
YW
YN
NP
NP
NP
NP
NP
PG
SEATBELTMODULE
WR
YO
YO
B
P
P
TACHOMETER
SP SY
PW
PW
TRUNK/HATCHLAMP & SWITCH
PW
PW
PW
B
B
B
P
P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTER
B
BW
BW
B
4
CIGAR LIGHTER
HEATER CONTROL
HEATER FAN
FUEL LEVEL
TEMPERATURE
SPEEDOMETER
TACHOMETER
HEADLIGHT SWITCH
HAZARD SWITCH
HEATER CONTROL
COLORCODESN B ro wn L G L ig ht Gr ee nU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin conne
DIAGRAM 17 - 73FROM BENTLEY
HORNBUTTON
HORNS
P
P
PB
PB
PB
B
W
DISTRIBUTOR
IGNITIONCOIL
WB
WB
1 2 3
4 5 6
7 8 9
10 11 12
RADIO
GEARBOX SWITCH
SEAT SWITCHES
DRIVER
DRIVER
PSNGR
PSNGR
BUZZER
-+
B
OIL PRESSURE
FUSE BOX
LG/P
G
G
G
G
G
(LG/N)
HAZARDFLASHER
HAZARDSWITCH
LG/NLG/P LG/N
LG/N
LG/P
G
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
GR
GR
B
B
RINDIgreen
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
GW
GW
GW
GW
green
(GW)
*TS SWITCH
L
TURN SIGNALFLASHER
B
12
34
5
B L
2
1
6
7 8
5
2
G
B
WB
WB
WB
WB
REAR WINDOW DEFROSTER& SWITCH - GT ONLY
2
3
3
6
OVERDRIVETRANSMISSIONOVERDRIVE
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7/27/2019 Mgb wiring
19/34
C2W1
W2 C1
BATTERY
U
IGNITIONSWITCH
STARTERRELAY
RADIOCONNECTION
ALTERNATOR WARNINGLAMP
STARTER
HEADLIGHTSWITCH
G
G
G G
PP
P
W
N
N
N
N
RG
RG
RG
WN
WN
N
W
W
W
W
W
NYInd
WG
N
N
N
N
NN
N
WR
NN
ALTERNATOR
+
WR
1 2
3
5 6
GG
WASHE
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
G
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(G)
WIPER/WASHERSWITCH
G
OVERDRIVESOLENOID
TRANSMISSIONINTERLOCK SWITCH
FUEL PUMP
YPY YRYW
OVERDRIVEON - OFF SWITCH
P
P
P
PW
PW
PW
B
PP
P
P
P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTER
B
4
COLORCODESN B ro wn L G L ig ht Gr ee nU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin conne
WLG
WLG
WLG
DISTRIBUTOR
IGNITIONCOIL
WB
WB
WB
8
-
+ FUSE BOX
WBWBB B
B
REAR WINDOW DEFROSTER, SWITCH& INDICATOR LAMP - GT ONLY
1 2
35
DIAGRAM 18 - 75FROM BENTLEY
G
G
G
G
G
(LG/N)
HAZARDFLASHER
HAZARDSWITCH
LG/NLG/N
LG/N
G
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
GR
GR
B RINDIgreen
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
GW
GW
GW
GW
green
(GW)
*TS SWITCH
L
TURN SIGNALFLASHER
B
12
34
7
B L
8RG
GAUGELAMP
DIMMERCONTROL
RW
HIGHBEAMS
LOWB
EAMS
HIGH BEAM INDICATOR
UW
UW
UW
UR
UR
(UR)
(UW)
UR
UW
B
B
B
B
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH*
W
FRONTPARKING
LIGHTS
R
R
RB
B
Left
Right
TAILLIGHTS&
LICENSEPLATELAMPS
R
R
RR
R
R
R
B
B
Left
Right
R
R
R
R
R
GAUGE&
DASH
ILLUMINATIO
NLAMPS
RW
RW
RW
B
RW
RW
RW
B
B
B
CIGAR LIGHTER
FUEL LEVEL
WATER TEMPERATURE
SPEEDOMETER
TACHOMETER
OIL PRESSURE
P
PP
P
P
PW
PW
TRUNK/HATCHLAMP & SWITCHB
B
C2
W1
W2
C1 G
G
3
RN
RN
2
HORNBUTTON
HORNS
P
P
PB
PB
PB
B
1
3
BRAKE SWITCH& LIGHTS
G GP
GP
GP
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
FUEL GAUGE & SENDER
GBLG/GG B I
GAUGE VOLTAGESTABILIZER
LG/G
2
3
HEATER FANSWITCH
HEATER FAN MOTOR
GYGY
G
G
TACHOMETER
G
72
W
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7/27/2019 Mgb wiring
20/34
B
HEATER FANSWITCH
G
GY
C1
W1
W2
C2
+-
BATTERY
HIGHBEAMS
HIGH BEAM INDICATOR
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
RADIOCONNECTION
UW
UW
G
G G
G
G
G
G
G
G
G
G
G
G
G
GK
G
WB
PP
W
WN
N
N
N
W
RG RG
NW
NW
W
W
W
NYInd
(UR)
(UW)
WG (WG)
(N) (PK)
EGR SERVICECOUNTER & LAMP
WR
WR
GKG
GK
WW/LG
B
ANTI RUN-ONVALVE & SWITCH
N
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
LOWB
EA
MS
UW
UR
UR
UR
UW
B
B
B
*
+ +
(S)
(W)
(WR)
GAUGELAMP
DIMMERCONTROL
2
3
5
FRONTPARKING&
MARKERLIGHTS
R
R
R
R
R
R
R
R
R
B
B
B
B
Left
Right
TAIL,REARMARKER,&
LICENSEPLATELAMPS
R
R
R
R
R
R
R
R
R
B
B
B
B
B
Left
Right
TEMP GAUGE & SENDER
FUEL GAUGE & SENDER
GU
GBLG/G
G
G
B I
GAUGE VOLTAGESTABILIZER
LG/G
LG/G
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
G
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(G/K)
WAS
WIPER/WASHERSWITCH
BRAKESWITCH
G
G
GP
GP
GP
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
G
G
G
G
G
INDUCTION
HEATER
G
OVERDRSOLENO
TRANSMISSIONINTERLOCK SWITCH
YPYPYRY YWW
FUEL PU
W
W
OVERDRIVEON - OFF SWITCH
INERTIASWITCH
W
W
(LG/N)
HAZARDFLASHER
HAZARDSWITCH
LG/NLG/P LG/N
LG/N
LG/P
G
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
B
B
RINDI
GW
green
green
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
GW
green
(GW)
*TS SWITCH
L
TURN SIGNALFLASHER
12
34
7
R
P
DISTRIBUTOR
IGNITION
COIL
BALLASTWIRE
TACHOMETER
WB
WB
WLG
WLG
SP SY
4
B
L
HEATER FAN MOTOR
2
1
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* two switches combined inindicates
RG
GAUGE
&DASH
IL
LUMINATIONLAMPS
RW
RW
RW RW RW
B
B
CIGAR LIGHTER
HAZARD SWITCH
RW
RW
RW
RW
B
B
B
B
TEMPERATURE
SPEEDOMETER
OIL PRESSURE
HEATER FAN
RW
RW
RW
RW
RW
B
B
B
B
B
HEATER CONTROL
HEADLIGHT SWITCH
HEATER CONTROL
TACHOMETER
FUEL LEVEL
HORNBUTTON
P
PB
PB
PB
B
LH DOORSWITCH
PG
PK
NP
NN
N
N
U
HEADLIGHTSWITCH
RG
RGN
2
1
3
P
P
BRAKE FAILURE& TEST SWITCH
& LAMP
P
P
P
P
PW
PW
PW
B
PPWB
P
P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTER
B
BW
BW
B
P
P
1
7 8
6
3
1975 MGB W/PERIOD WFROM LATE BENT
SEATBELT WARNING LAMP
SEATBELT BUCKLESWITCH
G
YP
YP
P
YN
YN
PG
SEATBELTMODULE
WR
B
TRUNK LAMP& SWITCH
1
2
3
4
5
6
8
B
W
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21/34
HEATER FANSWITCH
G
GY
C1
W1
W2
C2
+-
BATTERY
HIGHBEAMS
HIGH BEAM INDICATOR
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
RADIOCONNECTION
UW
UW
G
G G
G
G
G
G
G
G
G
G
G
G
G
GK
G
WB
PP
W
WN
N
N
N
N
W
RG RG
NW
W
W
W
NYInd
(UR)
(UW)
WG (WG)
(N) (PK)
EGR SERVICECOUNTER & LAMP
WR
WR
GKG
GK
WW/LG
B
ANTI RUN-ONVALVE & SWITCH
N
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
LOWB
EA
MS
UW
UR
UR
UR
UW
B
B
B
*
+ +
(S)
(W)
(WR)
GAUGELAMP
DIMMERCONTROL
2
3
5
FRONTPARKING&
MARKERLIGHTS
R
R
R
R
R
R
R
R
R
B
B
B
B
Left
Right
TAIL,REARMARKER,&
LICENSEPLATELAMPS
R
R
R
R
R
R
R
R
R
B
B
Left
Right
TEMP GAUGE & SENDER
FUEL GAUGE & SENDER
GU
GBLG/G
G
G
B I
GAUGE VOLTAGESTABILIZER
LG/G
LG/G
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
G
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(G/K)
WAS
WIPER/WASHERSWITCH
BRAKESWITCH
G
G
GP
GP
GP
REVERSE LIGHTS& SWITCH
GN
GNGNGN
G
G
G
G
G
INDUCTION
HEATER
G
OVERDRSOLENO
TRANSMISSIONINTERLOCK SWITCH
YPYPYRY YWW
FUEL PU
W
W
OVERDRIVEON - OFF SWITCH
INERTIASWITCH
W
W
(LG/N)
HAZARDFLASHER
HAZARDSWITCH
LG/NLG/P LG/N
LG/N
LG/P
G
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
B
B
RINDI
GW
green
green
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
GW
green
(GW)
*TS SWITCH
L
TURN SIGNALFLASHER
12
34
78
R
P
DISTRIBUTOR
IGNITION
COIL
BALLASTWIRE
TACHOMETER
WB
WB
WLG
WLG
SP SY
4
B
B
L
HEATER FAN MOTOR
1975 MGB W/SEQUENTIAL WARNING FROM LATE B
2
1
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* two switches combined inindicates
RG
GAUGE
&DASH
IL
LUMINATIONLAMPS
RW
RW
RW RW RW
B
B
CIGAR LIGHTER
HAZARD SWITCH
RW
RW
RW
RW
B
B
B
B
TEMPERATURE
SPEEDOMETER
OIL PRESSURE
HEATER FAN
RW
RW
RW
RW
RW
B
B
B
B
B
HEATER CONTROL
HEADLIGHT SWITCH
HEATER CONTROL
TACHOMETER
FUEL LEVEL
HORNBUTTON
HORNS
P
P
PB
PB
PB
B
SEATBELTWARNING LAMP
G
G
YP
YK
YU
YU
YG
YG
YW
YN
NP
NP
NP
NP
NP
PG
SEATBELTMODULE
WR
WR
YO
YO
B1 2 3
4 5 6
7 8 9
10 11 12
GEARBOX SWITCH
SEAT SWITCHES
DRIVER
DRIVER
PSNGR
PSNGR
BUZZER
SEATBELT BUCKLESWITCHES
LH DOORSWITCH
PG
PK
NP
NN
N
N
U
HEADLIGHTSWITCH
RG
RGN
2
1
3
P
P
BRAKE FAILURE& TEST SWITCH
& LAMP
P
P
P
P
TRUNKLAMP & SWITCH
PW
PW
PW
B
PPWB
P
P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTER
B
BW
BW
B
P
P
1
7 8
6
3
G
G
WN
WW
W
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22/34
HEATER FANSWITCH
G
GY
C1
W1W2
C2
+-
BATTERY
U
HIGHBEAMS
HIGH BEAM INDICATOR
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
RADIOCONNECTION
HEADLIGHTSWITCH
UW
UW
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
GK
G
WB
P
P
P
P
W
WN
N
NP
NP
N
N
W
RG
RG RG
N
NW
W
GGO
GOGO
GO
W
W
NYInd
(UR)
(UW)
WG (WG)
N
N (N)N
N
NN
N
(PK)
EGR SERVICECOUNTER & LAMP
WR
WR
GKG
GK
W
W
W
W
WUW/LG
B
ANTI RUN-ONVALVE & SWITCH
N
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
LOWB
EA
MS
UW
UR
UR
UR
UW
B
B
B
*
+ +
(S)
(W)
(WR)
GAUGELAMP
DIMMERCONTROL
1 2
3
5 6
7 8
FRONTPARKING&
MARKERLIGHTS
R
R
R
R
R
R
R
R
R
B
B
B
B
Left
Right
TAIL,REARMARKER,&
LICENSEPLATELAMPS
R
R
R
R
R
R
R
R
R
B
B
Left
Right
TEMP GAUGE & SENDER
FUEL GAUGE & SENDER
GU
GBLG/G
G
G
B I
GAUGE VOLTAGESTABILIZER
LG/G
LG/G
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
G
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(G/K)
WAS
WIPER/WASHERSWITCH
BRAKESWITCH
HAND BRAKESWITCH & LAM
BRAKE FAILURESWITCH
G
G
G
G
GP
GP
GP
WR
WR
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
G
G
G
GG
G
G
INDUCTION
HEATER
G
OVERDRSOLENO
TRANSMISSIONINTERLOCK SWITCH
YPYPYRY YW
FUEL PU
W
W
OVERDRIVEON - OFF SWITCH
INERTIASWITCH
W
W
(LG/N)
HAZARDFLASHER
HAZARDSWITCH
LG/NLG/P LG/N
LG/N
LG/P
G
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
B
B
RINDI
GW
green
green
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
GW
green
(GW)
*TS SWITCH
L
TURN SIGNALFLASHER
12
34
78
R
P
LH DOORSWITCH
PG
PK
SEATBELT WARNING LAMP
SEATBELT BUCKLESWITCH
G
P P
P
P
YP
YP
P
YN
YN
PG
SEATBELTMODULE
WR
B
B
P
P
DISTRIBUTOR
DISTRIBUTORRESISTOR
IGNITION
COIL
BALLASTWIRE
TACHOMETER
WB
WB
WB
WLG
WLG
SP SY
PW
PW
PW
TRUNK LAMP& SWITCH
PW
B
P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTERB
4
B
B
L
HEATER FAN MOTOR
1976 MGB W/CAFROM LATE BE
2
3
1
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* two switches combined inindicates
2
1
3
RG
GAUGE
&DASH
IL
LUMINATIONLAMPS
RW
RW
RW RW RW
B
B
CIGAR LIGHTER
HAZARD SWITCH
RW
RW
RW
RW
B
B
B
B
TEMPERATURE
SPEEDOMETER
OIL PRESSURE
HEATER FAN
RW
RW
RW
RW
RW
B
B
B
B
B
HEATER CONTROL
HEADLIGHT SWITCH
HEATER CONTROL
TACHOMETER
FUEL LEVEL
HORNBUTTON
HORNS
P
P
PB
PB
PB
B
NOT USED - LEFT OVER FROM1974 - 1975 MODELS WITH SEATBELT INTERLOCK SYSTEM
1
2
3
4
5
6
WN
WN
W YPYPYRY YWW
W
-
7/27/2019 Mgb wiring
23/34
HEATER FANSWITCH
G
GY
C1
W1W2
C2
+-
BATTERY
U
HIGHBEAMS
HIGH BEAM INDICATOR
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
RADIOCONNECTION
HEADLIGHTSWITCH
UW
UW
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
GK
G
WB
P
P
P
P
W
WN
N
NP
NP
N
N
W
RG
RG RG
N
NW
W
GGO
GOGO
GO
W
W
NYInd
(UR)
(UW)
WG (WG)
N
N (N)N
N
NN
N
(PK)
WW/LG
B
ANTI RUN-ONVALVE & SWITCH
N
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
LOWB
EA
MS
UW
UR
UR
UR
UW
B
B
B
*
+ +
(S)
(W)
(WR)
GAUGELAMP
DIMMERCONTROL
1 2
3
5 6
7 8
FRONTPARKING&
MARKERLIGHTS
R
R
R
R
R
R
R
R
R
B
B
B
B
Left
Right
TAIL,REARMARKER,&
LICENSEPLATELAMPS
R
R
R
R
R
R
R
R
R
B
B
Left
Right
TEMP GAUGE & SENDER
FUEL GAUGE & SENDER
GU
GBLG/G
G
G
B I
GAUGE VOLTAGESTABILIZER
LG/G
LG/G
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
G
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(G/K)
WAS
WIPER/WASHERSWITCH
BRAKESWITCH
HAND BRAKESWITCH & LAM
BRAKE FAILURESWITCH
G
G
G
G
GP
GP
GP
WR
WR
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
G
G
G
GG
G
G
INDUCTION
HEATER
G
OVERDRSOLENO
TRANSMISSIONINTERLOCK SWITCH
YPYPYRY YW
FUEL PU
W
W
OVERDRIVEON - OFF SWITCH
INERTIASWITCH
W
W
(LG/N)
HAZARDFLASHER
HAZARDSWITCH
LG/NLG/P LG/N
LG/N
LG/P
G
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
B
B
RINDI
GW
green
green
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
GW
green
(GW)
*TS SWITCH
L
TURN SIGNALFLASHER
12
34
78
R
P
LH DOORSWITCH
PG
PK
SEATBELT WARNING LAMP
SEATBELT BUCKLESWITCH
G
P P
P
P
YP
YP
P
YN
YN
PG
SEATBELTMODULE
WR
B
B
P
P
DISTRIBUTOR
IGNITION
COIL
BALLASTWIRE
TACHOMETER
WB
WB
WLG
WLG
SP SY
PW
PW
PW
TRUNK LAMP& SWITCH
PW
B
P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTERB
4
B
B
L
HEATER FAN MOTOR
1976 MGB W/O CAFROM LATE BE
2
3
1
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* two switches combined inindicates
2
1
3
RG
GAUGE
&DASH
IL
LUMINATIONLAMPS
RW
RW
RW RW RW
B
B
CIGAR LIGHTER
HAZARD SWITCH
RW
RW
RW
RW
B
B
B
B
TEMPERATURE
SPEEDOMETER
OIL PRESSURE
HEATER FAN
RW
RW
RW
RW
RW
B
B
B
B
B
HEATER CONTROL
HEADLIGHT SWITCH
HEATER CONTROL
TACHOMETER
FUEL LEVEL
HORNBUTTON
HORNS
P
P
PB
PB
PB
B
NOT USED - LEFT OVER FROM1974 - 1975 MODELS WITH SEATBELT INTERLOCK SYSTEM
1
2
3
4
5
6
WN
WN
W WW
OVERDRIVE SO
TRANSMISSIONINTERLOCK SWITCH
OVERDRIVEON OFF SWITCH
-
7/27/2019 Mgb wiring
24/34
HEATER FANSWITCH
G
GY
C1
W1W2
C2
+-
BATTERY
U
HIGHBEAMS
HIGH BEAM INDICATOR
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
RADIOCONNECTION
HEADLIGHTSWITCH
UW
UW
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
GK
G
WB
PP
W
N
NP
N
W
RG
RG RG
N
NW
GGO
GOGO
GO
W
NYInd
(UR)
(UW)
WG (WG)
N
(N)N
N
NN
N
(PK)
EGR SERVICECOUNTER & LAMP
WR
WR
GKG
GK
W
W
W
W
WUW/LG
B
ANTI RUN-ONVALVE & SWITCH
N
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
LOWB
EAMS
UW
UR
UR
UR
UW
B
B
B
*
+ +
(S)
(W)
(WR)
GAUGELAMP
DIMMERCONTROL
1 2
3
5 6
8
FRONTPARKING&
MARKERLIGHTS
R
R
R
R
R
R
R
R
R
B
B
B
B
Left
Right
TAIL,REARMARKER,&
LICENSEPLATELAMPS
R
R
R
R
R
R
R
R
R
B
B
Left
Right
TEMP GAUGE & SENDER
FUEL GAUGE & SENDER
GU
GBLG/G
G
GB I
GAUGE VOLTAGESTABILIZER
LG/G
LG/G
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
G
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(G/K)
WAS
WIPER/WASHERSWITCH
BRAKESWITCH
HAND BRAKESWITCH & LAM
BRAKE FAILURESWITCH
G
G
G
G
GP
GP
GP
WR
WR
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
G
G
G
GG
G
G
INDUCTION
HEATER
G
(LG/N)
HAZARDFLASHER
HAZARDSWITCH
LG/NLG/P LG/N
LG/N
LG/P
G
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
B
B
RINDI
GW
green
green
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
GW
green
(GW)
*TS SWITCH
L
TURN SIGNALFLASHER
12
34
78
R
LH DOORSWITCH
PG
PK
SEATBELT WARNING LAMP
SEATBELT BUCKLESWITCH
G
YP
YP
P
YN
YN
PG
SEATBELTMODULE
WR
B
B
P
P
DISTRIBUTOR
DISTRIBUTORRESISTOR
IGNITION
COIL
BALLASTWIRE
TACHOMETER
WB
WB
WB
WLG
WLG
SP SY
4
B
B
L
HEATER FAN MOTOR
1977 MGB W/CAFROM LATE BE
2
3
1
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* two switches combined inindicates
2
1
3
RG
GAUGE
&DASH
ILLUMINATIONLAMPS
RW
RW
RW RW RW
B
B
CIGAR LIGHTER
HAZARD SWITCH
RW
RW
RW
RW
B
B
B
B
TEMPERATURE
SPEEDOMETER
OIL PRESSURE
HEATER FAN
RW
RW
RW
RW
RW
B
B
B
B
B
HEATER CONTROL
HEADLIGHT SWITCH
HEATER CONTROL
TACHOMETER
FUEL LEVEL
HORNBUTTON
HORNS
P
P
PB
PB
PB
B1
2
3
4
5
6
WINERTIASWITCH
WOVERDRIVE SO
INTERLOCK SWITCH
FUEL PUMP
YPY
Y YR
Y
W
W
ON - OFF SWITCH
SPARKCONTROL SWITCH
SPARK ADVSOLENO
P
P
WN
NP
P
P P
P
P
PW
PW
PW
TRUNK LAMP& SWITCH
PW
B
P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTERB
NOT USED - LEFT OVER FROM1974 - 1975 MODELS WITH SEATBELT INTERLOCK SYSTEM
THERMOSTAT
COOLING
FANS
WN
7
BG
BG BG
WN
WN
WW
W
OVERDRIVE SO
TRANSMISSIONINTERLOCK SWITCH
OVERDRIVEON OFF SWITCH
-
7/27/2019 Mgb wiring
25/34
HEATER FANSWITCH
G
GY
C1
W1W2
C2
+-
BATTERY
U
HIGHBEAMS
HIGH BEAM INDICATOR
IGNITIONSWITCH
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
RADIOCONNECTION
HEADLIGHTSWITCH
UW
UW
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
GK
G
WB
P
P
P
P
W
WN
N
NP
NP
N
W
RG
RG RG
N
NW
GGO
GOGO
GO
W
NYInd
(UR)
(UW)
WG (WG)
N
N
(N)N
N
NN
N
(PK)
WW/LG
B
ANTI RUN-ONVALVE & SWITCH
N
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
LOWB
EAMS
UW
UR
UR
UR
UW
B
B
B
*
+ +
(S)
(W)
(WR)
GAUGELAMP
DIMMERCONTROL
1 2
3
5 6
8
FRONTPARKING&
MARKERLIGHTS
R
R
R
R
R
R
R
R
R
B
B
B
B
Left
Right
TAIL,REARMARKER,&
LICENSEPLATELAMPS
R
R
R
R
R
R
R
R
R
B
B
Left
Right
TEMP GAUGE & SENDER
FUEL GAUGE & SENDER
GU
GBLG/G
G
GB I
GAUGE VOLTAGESTABILIZER
LG/G
LG/G
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
G
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(G/K)
WAS
WIPER/WASHERSWITCH
BRAKESWITCH
HAND BRAKESWITCH & LAM
BRAKE FAILURESWITCH
G
G
G
G
GP
GP
GP
WR
WR
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
G
G
G
G
G
G
G
INDUCTION
HEATER
G
WINERTIASWITCH
W
(LG/N)
HAZARDFLASHER
HAZARDSWITCH
LG/NLG/P LG/N
LG/N
LG/P
G
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
B
B
RINDI
GW
green
green
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
GW
green
(GW)
*TS SWITCH
L
TURN SIGNALFLASHER
12
34
78
R
P
LH DOORSWITCH
PG
PK
SEATBELT WARNING LAMP
SEATBELT BUCKLESWITCH
G
P P
P
P
YP
YP
P
YN
YN
PG
SEATBELTMODULE
WR
B
B
P
P
DISTRIBUTOR
IGNITION
COIL
BALLASTWIRE
TACHOMETER
WB
WB
WLG
WLG
SP SY
PW
PW
PW
TRUNK LAMP& SWITCH
PW
B
P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTERB
4
B
B
L
HEATER FAN MOTOR
1977 MGB W/O CAFROM LATE BE
2
3
1
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* two switches combined inindicates
2
1
3
RG
GAUGE
&DASH
ILLUMINATIONLAMPS
RW
RW
RW RW RW
B
B
CIGAR LIGHTER
HAZARD SWITCH
RW
RW
RW
RW
B
B
B
B
TEMPERATURE
SPEEDOMETER
OIL PRESSURE
HEATER FAN
RW
RW
RW
RW
RW
B
B
B
B
B
HEATER CONTROL
HEADLIGHT SWITCH
HEATER CONTROL
TACHOMETER
FUEL LEVEL
HORNBUTTON
HORNS
P
P
PB
PB
PB
B
NOT USED - LEFT OVER FROM1974 - 1975 MODELS WITH SEATBELT INTERLOCK SYSTEM
1
2
3
4
5
6
THERMOSTAT
COOLING
FANS
OVERDRIVE SO
FUEL PUMP
YPY
Y YR
Y
W
W
ON - OFF SWITCH
SPARKCONTROL SWITCH
SPARK ADVSOLENO
7
BG
BG BG
WN
WN
W
OVERDRIVE SO
TRANSMISSIONINTERLOCK SWITCH
OVERDRIVEON OFF SWITCH
INERTIASWITCH
-
7/27/2019 Mgb wiring
26/34
HEATER FANSWITCH
G
G
GY
GN
C1
W1W2
C2
C1
W1 W2
C2
+-
BATTERY
U
HIGHBEAMS
LOWB
EAMS
HIGH BEAM INDICATOR
IGNITIONSWITCH
IGNITION
RELAY
STARTERRELAY
ALTERNATOR WARNINGLAMP
STARTER
RADIOCONNECTION
HEADLIGHTSWITCH
UW
UW
UW
UR
UR
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
WB
P
P
P
P
WN
WN
N
N
N
WN
WN
RG
RG
RG
WN
WN
N
NW
W
GGO
GOGO
GO
W
NYInd
(UR)
(UW)
UR
UW
WG (WG)
N
(N)
N
N
N
(PK)
EGR SERVICECOUNTER & LAMP
WR
WR
GKG
GK
W
W
WN
W
WUW/LG
GAUGE
&DASH
ILLUMINATIONLAMPS
RW
RW
RW
RW
RW
RW
RW
B
B
B
B
B
B
ANTI RUN-ONVALVE & SWITCH
N
ALTERNATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
*
+
(S)
(W)
(WR)
GAUGELAMP
DIMMERCONTROL
RW
RW
RW
RW
RW
RW
RW
B
B
B
B
1 2
3
5 6
7 8
FRONTPARKING&
MARKERLIGHTS
R
R
R
R
R
R
R
R
R
B
B
B
B
Left
Right
TAIL,REARMARKER,&
LICENSEPLATELAMPS
R
R
R
R
R
R
R
R
R
B
B
Left
Right
TEMP GAUGE & SENDER
FUEL GAUGE & SENDER
GU
GBLG/GG B I
GAUGE VOLTAGESTABILIZER
LG/G
LG/G
WIPER MOTOR
LG/B
U/LG
R/LG
N/LG
G
(LG/B)
(B)
(U/LG)
(R/LG)
(N/LG)
(G)
WAS
WIPER/WASHERSWITCH
BRAKESWITCH
HAND BRAKESWITCH & LAM
BRAKE FAILURESWITCH
G
G
G
G
GP
GP
GP
WR
WR
REVERSE LIGHTS& SWITCH
GN
GNGNGNG
G
G
G
G
G
G
G
G
OVERDRIVE SOINTERLOCK SWITCH
FUEL PUMP
YPY
Y YR
YYPWN
W
W
ON - OFF SWITCH
SPARKCONTROL SWITCH SPARK ADV
SOLENO
SWITCHW
W
(LG/N)
HAZARDFLASHER
HAZARDSWITCH
LG/NLG/P LG/N
LG/N
LG/P
G
N
(GR)
RH REAR
RH FRONGW
GW
GR
GR
GR
B
B
RINDI
GW
green
green
LH REAR
LH FRON
GR
BL
INDI
GR
GR
GW
GW
GW
green
(GW)
*TS SWITCH
L
TURN SIGNALFLASHER
12
34
78
R
P
LH DOORSWITCH
PG
PK
SEATBELT WARNING LAMP
SEATBELT BUCKLESWITCH
G
P P
P
YP
YP
P
YN
YN
PG
SEATBELTMODULE
WR
B
B
1
2
3
4
5
6
HORNBUTTON
HORNS
P PB
PB
B B
P
P
THERMOSTAT
COOLING
FANS
DISTRIBUTOR
DISTRIBUTORRESISTOR
IGNITION
COIL
BALLASTWIRE
TACHOMETER
WB
WB
WB
WLG
WLG
SP SY
PW
PW
PW
CLOCK
TRUNK LAMP& SWITCH
PW
B
B
P
P
P
COURTESY LAMP& DOOR SWITCHES
CIGARLIGHTERB
4
B L
CIGAR LIGHTER
HEATER CONTROL
HEATER CONTROL
FUEL LEVEL
TEMPERATURE
SPEEDOMETER
TACHOMETER
CLOCK
OIL PRESSURE
HAZARD SWITCH
HEATER FAN
BG
BGBG
HEATER FAN MOTOR
1978 & LATERFROM BENT
2
3
1
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
= one pin of a multi pin connec* two switches combined inindicates
NN
2
1
3
Batt
NP
NOT USED - LEFT OVER FROM1974 - 1975 MODELS WITH SEATBELT INTERLOCK SYSTEM
NB W WW YRYW YP
-
7/27/2019 Mgb wiring
27/34
MGC - UK MAFROM BENT
+-
BATTERIES
STARTER
NB
NG
-Ind
NNY ALTERNATOR
ALTERNATORWARNING LAMP
REGULATOR
+
-+
F
U
LOWB
EAMS
IGNITIONSWITCH
HEADLIGHTSWITCH
G
G
G
G
G
GP
P
W
W
N
W
N
BG
RR
R
R
N
N N
N
W
W W
N
N
NN
N
GAUGE
&DA
SH
ILLUMINATIONL
AMPS
COURTESY/MAPLIGHT/SWITCH
RW
W
WR
GAUGELAMP
DIMMERCONTROL
RW
RWB
RWB
RWB
RWB
RWB
G
FUEL GAUGE & SENDER
B I
GAUGE VOLTAGESTABILIZER
GBLG/G
BRAKE SWITCH
G GP
GP
GP GP
REVERSE LIGHTS& SWITCH
GN
GNGN GNG
GG
FUEL PUMP
W
W
(LG/N)LG/NG
*TS SWITCH
L
TURN SIGNALFLASHER
B
CIGAR LIGHTER
FUEL LEVEL
SPEEDOMETER
TACHOMETER
OIL PRESSURE/WATER TEMPERATURE
FUSE BOX
B
GBBGREAR WINDOW DEFROSTER
& SWITCH - GT ONLY
N
CIGAR
LIGHTER
B
HIGHBEAMS
HIGH BEAM INDICATOR
UW
UW
UW
UR
UR
UR
UW
UR
UW
B
B
B
B
U
DIMMERSWITCH
RG
G
TACHOMETER
W
DISTRIBUTOR
IGNITIONCOIL
WB
FRONTPARKIN
G
LIGHTS
R
TAILLIGHTS&
LICENSEPLATELAMPS
R
R
R
R
R
R
R
R
B
B
R
R
R
R
R
B
B
HORNBUTTON
HORNS
P
P
PB
PB
PB
B
PW
PW
PW
B P
COURTESY LAMP& DOOR SWITCHES
1 2
3 4
5 6
7 8
FLASH-TO-PASSSWITCH
*
HEATER FANSWITCH
HEATER FAN
GNGN
1
3
OVERDRSOLENO
TRANSMISSIONINTERLOCK SWITCH
YRYW
OVERDRIVEON - OFF SWITCH
YP
- F + B+
1 2
F
G
G
G
G
(GR)
RH REAR
RH FRONGW
GW
GR
GR
LH REAR
LH FRON
GR
GR
GW
GW
B RINDIgreen
GW
GR BL
INDIgreen
(GW)
WIPER MOU/LG
R/LG
N/LG
G
WIPERSWITCH
G
1
3
5
7
RADIO
COLOR CODESN B r own LG Li ght Gr eenU Blue W WhiteR Red Y YellowP Purple S SlateWire colors shown in ( ) are suppliedcomponent they are connected to.
*These two switches are combined in
2
2
4
6
8
3 4
21
WNB
OVERDRIVESOLENOID
TRANSMISSIONINTERLOCK SWITCH
OVERDRIVEON - OFF SWITCH
-
7/27/2019 Mgb wiring
28/34
+-
BATTERIES
U
HIGHBEAMS
LOWB
EAMS
HIGH BEAM INDICATOR
IGNITIONSWITCH
ALTERNATOR WARNINGLAMP
STARTER
UW
UW
UW
UR
UR
W
W
W
W
W
W
N
N
N
N
WR
W
W
W
W
WNB
NG
Ind
(UR)
(UW)
UR
UW
N
N
NN
B
B
B
B
NNY ALTERNATOR
REGULATOR
(U)(P)
DIMMER &FLASH-TO-PASS
SWITCH
*