©2000 CaterpillarAll Rights Reserved

Printed in U.S.A.

SENR9278-03March 2000

320B ExcavatorElectrical System

7JR1-UP1XS1-UP2AS1-UP5MS1-UP9WS1-UP6LW1-UP3YZ1-UP

Code Description of Problems1301 Engine oil pressure is too low.1302 Engine coolant temperature is too high.1303 Hydraulic oil temperature is too high.1304 Air filter is clogged.1305 Battery voltage is not normal.2201 Governor actuator feedback sensor circuit is open or shorted to battery voltage.2202 Governor actuator feedback sensor circuit is shorted to body ground.2301 Governor actuator feedback signal is not stable.2302 Governor actuator feedback signal deviates.2303 Governor actuator does not move.2304 Calibration data error.3201 Monitor RAM is not normal.4101 Electric power supply to the controller is too much (43 volts).4102 Over-current in proportional reducing valve.4103 Proportional reducing valve circuit is open.4104 Monitor power supply (digital output) over current.4105 Over-current in digital output (trenching solenoid).4106 Over-current in digital output (fine control solenoid).4107 Over-current in digital output (travel speed change solenoid).4108 Over-current in digital output (travel alarm).4109 Spare solenoid 1 (digital output) over current.410A Over-current in digital output (swing brake solenoid).410B Spare solenoid 2 (digital output) over current.4201 Engine speed is not normal.4202 Engine coolant temperature sensor is shorted to body ground.4203 Hydraulic oil temperature sensor is shorted to body ground.4204 PWM sensor of pump delivery pressure is shorted to body ground.4205 Spare PWM sensor 1 is shorted to body ground.4206 Spare PWM sensor 2 is shorted to body ground.4207 PWM sensor of pump delivery pressure is open in circuit.420A Fuel sensor is shorted to body ground420B Fuel sensor is open or shorted to battery voltage.420C Electric power supply is to low (below 23 volts).420D Electric power supply is to high (above 32 volts).420E Engine speed dial is not in one of the 10 specified positions.4301 Data mismatch 1 between alternator and speed sensor (alternator is abnormal).4302 Data mismatch 2 between alternator and speed sensor (speed sensor is abnormal).4303 Engine stalls.A201 Monitor communication is not normal.A202 Monitor takes too much time to respond to controller's signal.A203 Communication is abnormal in controller.

Real Time Error Codes

Wire DescriptionWire

NumberWire Color

Description Wire Number

Wire Color

Description

Power Circuits Accessory Circuits (Continued)101 RD Bat(+) 546 BU Aux Hyd - Rotate CW

103 RD Doom Lamp 547 OR Aux Hyd - Rotate CCW

105 RD Key Sw 548 GY Aux Hyd - Open

107 RD Eng Shut 549 PK Aux Hyd - Close

109 RD Alt Output(+) Term. 575 YL Wiper. Aux (Park)

111 RD Aux Ckt 576 PK Wiper.Aux(Low)

112 PU Main Power Rly Output 576 BU Washer.Aux

113 OR Opr Mon Panel VMIS B+ Switched 586 BR Aux Hyd . Close

114 RD Warning Horn (Forward) A587 YL Power Window Cont To Safety Sol Relay

115 PK Cab/Chassis Lamp A588 GN Safety Sol Relay To Sol

118 GY Washer/Wiper C537 GN A/C Photo Sensor + Sig

120 YL Converter C538 OR A/C Photo Sensor. Sig

124 GN A/C Lighting Circuits129 BU Cigar Lighter 607 PK Flood Lamp - Front

135 BU Aux Ckt 615 YL Cab Flood Lamp/Rops

139 OR Aux Ckt 616 BU Bucket Flood Lamp/Boom Flood Lamp

140 BU Lubricator 633 BU Attach Lighting Ckt

145 BU Aux Ckt 638 WH Rotary Beacon

147 PU Flow Cont/Fine Swing Solenoid Control Circuits149 PU Boom Lamp 763 BU Torque Converter SW

150 RD Hyd Lock SW/ Hyd Lock Sol 779 WH Coupler Engage Sal

151 BN Aux Ckt 780 PU Coupler Disengage Sal

152 BU Aux Ckt 786 GN Eng Speed Cant. Hi Press SW

154 RD Aux Ckt 788 YL EngSpeed(+)

168 RD Aux Ckt 791 PK Eng Speed Cont. Lo Sol

172 RD Aux Ckt A755 PK Throttle SW #1

176 BU Aux Ckt A756 BU Throttle SW #2

176 YL Aux Ckt A757 GY Throttle SW #3

177 RD Main Brkr A758 BR Throttle SW #4

180 BN Aux Ckt A761 PU Electronic Pump Cont Throggle Ground

185 YL Aux Ckt A762 PU Electronic Pump Cant Eng Speed Ground

189 RD Aux Ckt A768 BU Pump Control Valve #1 (+)

191 WH Aux Ckt A769 GY Pump Control Valve #2 (-)

196 BU lnsp Lamp A770 PK Electronic Pump Cont Bypass SW To Resistor

198 PK Aux Ckt A771 PU Float SW

Ground Circuits F771 OR Backup SW

200 BK Main Chassis F772 WH Backup SW

210 BK ConverterOutput(24/12 Volt) F773 OR Governor Accel

235 BK Electronic Pump Ctrl Gnd F774 WH Governor Decel

Basic Machine Circuits F846 PU LED Driver 1

306 GN Starter Relay Coil G848 GN LED Driver 2

307 OR Key SW To Neutral Start SW G872 PU Espar Cab Heater to Power Switch

308 YL Main Power Relay Coil 952 OR Hammer SW B

310 PU Start Aid SW To Start Aid Sol 954 GN HammerSWA

320 OR Horn Relay Coil To SW 955 RU Hammer Sol A

321 BR Backup Alarm Lamp Travel Alarm K904 GN Pump Discharge - Signal

326 RD Key SW "C" Term. K905 RD Pump Discharge. +B

386 PK Air Shutoff Solenoid Enable K906 GN Swing Brake Sol - Signal

Monitoring Circuits K907 RU Swing Brake Sol - +8

403 GN Alternator (R) Term. K909 BU Backup SW +8

405 GY Opr Mon Oil Press. (Low Setting) K911 PK EJP Controller - RS4BS (+)

412 BU OprMon Cool Flow K912 GN E/P Controller - RS4BS (-)

430 BU Opr Mon Air Filter K915 GN Fine Swing SW - E/P Controller

487 OR Hyd Oil Flow SW K997 BU +V Sensor, EMS-Il

491 PK VMIS Hyd Oil Temp Sensor L908 OR Controller RS-232C Tx

492 GY VMIS Coolant Temp Sensor Signal L909 BU Controller RS-232C Rx

495 GN VMIS Fuel Level Signal L968 OR Electronic Pump Control Ps Valve (.)

496 WH Opr MOn Panel Hyd Oil Level L969 WH Electronic Pump Contral Ps Valve (+)

A424 WH Press. Transducer 1 Signal L970 GY Electronic Pump Cant To SW Common Return

A425 YL Press. Transducer 2 Signal L971 GN Electronic Pump Cant To Travel Pressure SW

C468 BU Engine Oil Level L972 BU Low Idle SW

Accessory Circuits L973 GN Fine Swing Cont Relay To Sol Valve

506 PU Washer-Front L974 GN Electronics Pump Ctrl Boom Raise Press SW

508 PU Radio Speaker - Left L975 PK Start Aid Cont Lamp 1 Output

509 WH Radio Speaker - Left (Commom) L977 YL Trenching Sol

511 BR Radio Speaker - Right L978 GY Level Finish Sol

512 GN Radio Speaker. Right (Common) N923 GY Backup Mode Switch 1

519 PK Thermostat To Refrigerant Press. SW N924 WH Backup Mode Switch 2

524 BU Wiper - Left (Low)

Resistor, Sender and Solenoid SpecificationsPart No. Component Description Resistance (Ohms)¹3E-1906 Solenoid: A/C Clutch 17.6 ± 0.6

3E-6332 Solenoid: Valve Start Aid 6.00

4I-5394 Sender: Hydraulic Oil Temp

20824 - 25415 @ 0°C6134 - 7496 @ 25°C3989 - 4875@35°C2224 - 2718 @ 50°C973 - 1189 @ 75°C475 - 522 @ 100°C221 - 269 @ 125°C

7Y-8242 Resistor: Timer Relay 47.0 ± 4.7

8C-3663Solenoid: Engine Shutdown Start (Latch) Coil Stop (Unlatch) Coil

1.55 ± 0.1510.3±1.03

102-8017 Resistor: Backup 52.0 ± 2.6

111-9916 Solenoid: Engine/Pump Control Flow Control 11,7 ± 1.2

121-1490 Solenoid: Level Finish Trenching 32.0 ± 3.2

121-1491

Solenoid: AC1 AC2 Hydraulic Lock Swing Brake Travel Speed

32.0 ± 3.2

¹ At room temperature unless otherwise noted.

Off Machine Switch SpecificationPart No. Function Actuate Deactuate Contact Position

3E-6449 Coolant Temperature (Start Aid) 38 ± 3° C(100 ± 5°F)

27” C Mm(80.6° F) Normally Closed

3E-6455 Engine Oil Pressure 90 21 kPa(13 ± 3.0 psi)

70 ± 21 kPa(10 ± 3.0 psi)

A-B Normally OpenA-C Normally Closed

106-0179 Implement PressureTravel Pressure

1520 ± 98 kPa(224.4 ± 14.21 psi)

1127 kPa MIN(163.5 psi MIN) Normally Open

106-0180 Boom RaisePressure 2646.00 ± 196.00 kPa(383.77 ± 28.43 psi)

2156.00 ± 196.00 kPa(312.70 ± 28.43 psi) Normally Open

114-5333 Refrigerant Pressure (AC) 275 to 1750 kPa ¹(40 to 255 psi)

—— Normally Open ²

131-9203 Aux Hydraulic Pressure 3500 kPa MAX(507.6 psi)

3000 ± 150 kPa(435.1 ±21.8 psi)

A-B Normally OpenA-C Normally Closed

¹ A hysteresis band exists: with increasing pressure the closed condition can be maintained up to 2800 kpa (405 psi), with decreasing pressure the closed condition can be maintained down to 170 kpa (25psi).

² Contact postion at the contacts of the harness connector.

Component LocationComponent Schematic

LocationMachine Location Component Schematic

LocationMachine Location

A/C Unit H-4 10 Seat W/Seat Heater (Atch) F-4 E

Alarm - Travel (Atch) G-12 2 Sender - Hyd Oil Temp A-5 5

Alternator B-11 11 Sensor - A/C Photo D-7 A

Batteries I-11 13 Sensor - Engine Speed B-11 20

Block - Terminal F-9 D Sensor - Fuel Level A-5 6

Breaker - Alternator I-11 D Sensor - Overload Warning Device O.W.D. A1 F-11 D

Breaker - Fuel Heater E-8 D Sensor - Pump Discharge Press B-8 26

Breaker - Main I-11 D Socket - 12v B-6 15

Breaker - Warming Windshield D-8 D Solenoid - A/C Clutch C-11 27

Cigar Lighter C-7 A Solenoid - AC1 I-8 39

Control - Overload Warning Device O.W.D. G-5 A Solenoid - AC2 I-8 39

Control - Wiper B-7 A Solenoid - Aux Pedal On/Off E-1 39

Controller - Aux/Hyd (Atch) H-9 33 Solenoid - Engine Shutdown B-11 11

Controller - Engine/Pump E-2 2 Solenoid - Flow Control I-8 29

Convertor C-6 15 Solenoid - Fine Swing E-10 28

Diode G-10 7 Solenoid - Hammer 2 I-6 30

Fuse - Block I-1,2,3 C Solenoid - High Press A3 F-10 39

Ground - Cab B-7 A Solenoid - Hyd Lock E-1 G

Ground - Chassis A-3 23 Solenoid - Level Finish A-8 33

Ground - Chassis I-12 D Solenoid - Rl/R2 I-7 39

Ground - Chassis A-5 E Solenoid - Start Aid (Atch) I-12 31

Ground - Platform D-1 F Solenoid - Swing Brake E-10 32

Ground - Relay Panel G-11 D Solenoid - Travel Speed A-8 33

Ground - Strap Chassis/Platform I-5 2 Solenoid - Trenching A-8 33

Horns A-2 16 Switch - Air Cleaner H-12 35

Joystick - Multiswitch F-3,G-11 A Switch - Backup D-2 B

Meter - Service C-7 A Switch - Boom Raise Press D-10 34

Monitor C-7 A Switch - Coolant Level I-12 36

Motor - Govener Assembly A-11 20 Switch - Disconnect I-11 D

Motor - Lower Wiper F-1 F Switch - Engine Oil Level A-11 18

Motor - Starter A-11 20 Switch - Engine Oil Press B-11 38

Motor - Upper Wiper B-6 22 Switch - Swing Control D-4 33

Motor - Washer I-12 D Switch - Hyd Oil Filter A-5 E

Pump - Auto Lubrication (Atch) H-12 7 Switch - Hyd Oil Level A-5 E

Pump - Heater Fuel (Atch) D-7 D Switch - Implement Press D-10 39

Pump - Refueling A-3 D Switch - Neutral Start Limet H-4 C

Relay - Boom Lamp I-10 D Switch - Overload Warning Device O.W.D. D-4 B

Relay - Cab/Chassis Lamp I-10 D Switch - Panel F-2 B

Relay - Fuel Heater E-8 D Switch - Pressure I-7 39

Relay - Horn I-10 D Switch - Prox I-7 39

Relay - Hyd Lock Solenoid I-10 D Switch - Refrigerant Low Press C-11 24

Relay - Main G-10 7 Switch - Refueling (Atch) A-5 40

Relay - Neutral Start F-7 D Switch - Refueling Start (Atch) A-4 41

Relay - Refueling 1 (Atch) A-3 23 Switch - Refueling Stop (Atch) A-4 41

Relay - Refueling 2 (Atch) A-3 23 Switch - Seat Heater (Atch) D-4 B

Relay - Start F-8 D Switch - Start Aid (Atch) D-5 B

Relay - Start Disable E-8 D Switch - Start Aid Coolant Temp (Atch) B-11 24

Relay - Heater F-8 D Switch - Key E-2 B

Relay - Timer F-7 D Switch - Travel Press D-10 39

Resistor - Backup I-11 24 Switch - Windshield B-7 A

Machine locations are repeated for components located close together.

A = Located inside of cab.

B = Located inside of right console.

C = Located inside of left console.

D = Located around relay panel.

E = Located around hydraulic oil tank.

F = Located around pilot manifold.

G = Located under platform.

H = Located inside dash.

Related Electrical Service ManualsForm Number

Alternator: 132-2156 SENR4757

Electric Starting Motor: 104-7040 Consist: 6V-5821 SENR3581

Engine/Pump Control: SENR9291

Starting and Charging: SENR9292

Title

Connector LocationConnector Number Schematic

LocationMachine Location

CONN 1 F-12 DCONN 2 F-12 DCONN 3 G-12 DCONN 4 G-12 DCONN 5 H-11 DCONN 6 G-11 DCONN 7 G-11 DCONN 8 A-11 1CONN 9 F-9 DCONN 10 I-7 29CONN 11 I-7 29CONN 12 A-6 ECONN 13 C-6 21CONN 14 G-6 FCONN 15 G-6 FCONN 16 G-6 FCONN 17 H-6 FCONN 18 H-6 FCONN 19 H-5 FCONN 20 G-5 FCONN 21 F-5 BCONN 22 F-5 BCONN 23 F-5 BCONN 24 F-5 BCONN 25 C-5 24CONN 26 C-5 FCONN 27 C-4 FCONN 28 C-4 FCONN 29 A-4 23CONN 30 A-4 7CONN 31 A-4 7CONN 32 F-4 BCONN 33 F-4 BCONN 34 F-4 BCONN 35 H-4 CCONN 36 H-3 CCONN 37 H-3 CCONN 38 H-3 CCONN 39 H-3 CCONN 40 H-3 CCONN 41 A-3 7CONN 42 B-3 9CONN 43 B-2 9CONN 44 H-2 CCONN 45 H-2 CCONN 46 SIS Connector H-11 D

The connectors shown in this chart are for harness to harness connectors. Connectors that join a harness to a component are generally located at or near the component. See the Component Location Chart.

E98059

Machine Harness Connector and Component Locations

A

3

4

5 68

9

10

11

12

1415

13

16

B

C

D

E1

2

17

18

1920

21

22

23

24

25

26

27

2829

30

31

32

17

35

33

34

36

38

7

F

39

40

41

A

3 45 68

9

10

11

12

14

15

13

16B

C

DE

12

17

18 19

20

21

22

23

24252627

28

29

3031

3235

33

343638 7

F

3940

41

12

16

T

Normally open switch that will close with an increase of a specific condition (temp-press-etc.).

Normally open switch that is closed due to an applied condition, and will open again with a specific decrease in that condition.

Normally closed switch that will open with an increase of a specific condition.

Normally closed switch that is open due to an applied condition, and will close again with a specific decrease in that condition.

The circle indicates that the component has screw terminals and a wire can be disconnected from it.

No circle indicates that the wire cannot be disconnected from the component.

This indicates that the component has a wire connected to it that is connected to ground.

This indicates that the component does not have a wire connected to ground. It is grounded by being fastened to the machine.

Electrical Schematic Symbols And Definitions

PressureSymbol

TemperatureSymbol

LevelSymbol

FlowSymbol

A AA

2

A AA1

2

325-PK-14C A

325-PK-14

200-BK-14

T

FUSE - A component in an electrical circuit that will open the circuit if too much current flows through it.

REED SWITCH - A switch whose contacts are controlled by a magnet. A magnet closes the contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch.

SENDER - A component that is used with a temperature or pressure gauge. The sender measures the temperature or pressure. Its resistance changes to give an indication to the gauge of the temperature or pressure.

RELAY (Magnetic Switch) - A relay is an electrical component that is activated by electricity. It has a coil that makes an electromagnet when current flows through it. The electromagnet can open or close the switch part of the relay.

CIRCUIT BREAKER (C/B) - A component in an electrical circuit that will open the circuit if too much current flows through it. This does not destroy the circuit breaker and it can be reset to become part of the circuit again.

SOLENOID - A solenoid is an electrical component that is activated by electricity. It has a coil that makes an electromagnet when current flows through it. The electromagnet can open or close a valve or move a piece of metal that can do work.

Harness And Wire Electrical Schematic Symbols

SocketPin

Pin or Socket Number

Wire, Cable, or Harness Assembly Identification

Single Wire Connector

Circuit Number Identification

Wire Gauge

WireColor

Plug Receptacle

9X-1123

Component Part Number

Electrical Schematic Symbols And Definitions

11 12 2

Typical representation of a Sure-Seal connector. The plugand receptacle contain both pins and sockets.

Typical representation of a Deutsch connector. The plug contains all sockets and the receptacle contains all pins.

MAGNETIC LATCH SOLENOID - A magnetic latch solenoid is an electrical component that is activated by electricity and held latch by a permanent magnet. It has two coils (latch and unlatch)that make electromagnet when current flows through them. It also has an internal switch that places the latch coil circuit open at the time the coil latches.

200-BK-14200-BK-14

386-PK-18

AF306-GN-18

AF 162-0341 E-9

2341

405-GY-18578-BU-18200-BK-14

ATCH. AUX. CKT

ATCH FUELHEATER

135-6299 (NOTE H)

12 200-BK-14

AK

G872-PU-14

200-BK-18

200-BK-18

200-BK-18

TO WARMING WINDSHIELD

112-PU-14

YY

STARTERMOTOR128-5621

USED FOR ARCTIC PACKAGE

B (NOTE H)

101-RD-2

301-BU-10

MOTOR

ALT R

B+

CHASSIS

B-

304-WH-8GS

MTRBAT101-RD-2

RD-00RD-00

200-BK-4200-BK-18

200-BK-2

BK-00

ALTERNATOR159-9901 B

B

HH

AA

EE

200-BK-2

109-RD-2

403-GN-18

B

B (NOTE H)

304-WH-8

G872-PU-14

101-RD-14

7

3

306-GN-18

101-RD-12

4

1

145-BU-12

386-PK-18

15A

40A

5A

15A

143-BR-12

200-BK-14

145-BU-12

405-GY-18578-BU-18

578-BU-18405-GY-18

112-PU-14

G872-PU-14

101-RD-14

200-BK-14

START HEATERESPAR

111-4871

200-BK

START DISABLERELAY

111-4871

SW ONHEATER

SW OFFHEATERINDICATOR

ON HEATER

SW ON/OFFFUEL HEATER

330-YL-18330-YL-18

INDICATORON FUEL HEATER

WARMING WINDSHIELDRELAY

125-1302FUEL HEATER

BREAKER3T-2662 WARMING WINDSHIELD

BREAKER8D-7265

ATCH. PANEL GPARCTIC

160-2147 (NOTE H)

158-BR-14158-BR-14

8

6

10

12

2

9

5

11

4

511

12

323-WH

BU

102136

987

323-WH

323-WH323-WHGY

YL

BR

RDPK

OR

BK

PUGNWH

4+

24 V

DC

OU

T-W

ATE

R P

UM

P

5 11 12 10 2 1 3 6 7 8 9

ATCH HEATER GP136-9001 (NOTE H)

+24

VD

C IN

-FU

EL

HE

ATE

R

FU

EL

PU

MP

FU

EL

PU

MP

FU

EL

FIR

ED

HE

ATE

R-E

NA

BLE

+24

VD

C IN

-FU

EL

HE

ATE

RG

RO

UN

D

AF

AF

FUEL HEATERRELAY

111-4871

AF

323-WH323-WH

ATTACHMENTHEATER FUEL PUMP

136-7707 (NOTE H)

PUMP

NOTE H : USE WITH ARCTIC PACKAGE

ANTI DRIFT PRESS SW(VA BOOM)

ANTI-DRIFT SOL(VA BOOM) 200-BK

H918-WH

1220

0-B

KH

918-

WH

200-

BK

H91

8-W

H

H91

8-W

H

21

A58

7-Y

L

2 1

12

N923-GY-18

N923-GY-18

N923-GY-18N923-GY-18

N923-GY-14

G848-GN-18

G848-GN-18

G848-GN-18G848-GN-18

F846-PU-18

F846-PU-18

200-

BK

-14

200-

BK

-18

200-

BK

-18

200-

BK

-18

200-

BK

A85

0-W

H-1

8A

849-

OR

-18

200-

BK

200-

BK

-18

F846-PU-18

200-

BK

N92

3-G

Y-14

200-

BK

N92

3-G

Y

952-

OR

-18

200-

BK

-18

200-

BK

-18

N919-GN-18N920-BU-18

N924-WH-18

A756-PU-18

N921-YL-18N922-OR-18

200-BK-18

34567

2

8

A755-PK-18

A757-WH-18

81273456

1

8

NN

NN

K976-OR-18

954-GN-18

K975-WH-18K974-PU-18K973-BR-18

A758-BR-18

N924-WH-18

PROX SW3T-3132

AC2(ON/OFF)121-1491

SOLR1/R2

125-8075

F846-PU-18

AUX PRESSSW

131-9203

951-

PK

-18

A B

QQ

955-

BU

-18

C

1 221

585-

YL-

18

A84

8-P

K-1

8A

847-

YL-

18

NN NNNN

PP

AC1(ON/OFF)121-1491

PP

200-

BK

-18

12

NN

1 2

950-

BR

-18

200-

BK

-18

L970

-GY-

18

C

QQ

BA

PRESSURE SW106-0179

952-

OR

-18

1 2

NN

N92

3-G

Y-18

952-

OR

-18

N92

3-G

Y

N92

3-G

Y-14

952-

OR

-18

952-

OR

-18

952-

OR

-18

952-

OR

-18

200-

BK

-14

952-OR-18

K976-OR-18K975-WH-18K974-PU-18K973-BR-18

N919-GN-18N920-BU-18N921-YL-18N922-OR-18

546-BU-18

548-GY-18549-PK-18

547-OR-18

952-OR-18N923-GY

G848-GN-18

A849-OR-18A850-WH-18

951-PK-18

950-BR-18

A847-YL-18A848-PK-18

F846-PU-18

585-YL-18200-BK

2

5

2216104211593

24

20

19

6

MEDIUM PRESS SOL R2

18

111723

12

17

8

13

14

THROTTLE POS SW

NN

E/P CONTRE/P CONTRE/P CONTRE/P CONTR

THROTTLE POS SW

AUX PILOT MAN AC1

FLOW CONTROL SOL

RH - JOYSTICK

GROUNDAUX PILOT MAN AC2

PROX SW

MEDIUM PRESS SOL R1

LH - JOYSTICKLH - JOYSTICK

HAMMER 2 SPEED SOL

FLOW CONTROL SOL

ROCKER SW CSL

RH - JOYSTICK

PRESSURE SWAUX CKT POWER SUPPLY

THROTTLE POS SWTHROTTLE POS SW

L34

K976-OR-18K975-WH-18

ATCH-AUX/BACKUPRELAY145-6907

200-BK-14

L970-GY-18

N924-WH-18

546-BU-18547-OR-18548-GY-18549-PK-18

K974-PU-18K973-BR-18

954-GN-18

955-BU-18

G848-GN-18F846-PU-18

952-OR-18N923-GY-14

A755-PK-18A756-PU-18A757-WH-18A758-BR-18

ATCH-AUX/HYDCONTROLLER122-9897

A58

7-Y

L-18

A58

7-Y

L-18

A58

7-Y

L-18

L970-GY-18

200-BK-14200-BK-14

118-GY524-BU

638-WH

524-BU118-GY

615-YL-18

615-YL

L55

L54

23

K97

3-B

R-1

8K

974-

PU

-18

K97

5-W

H-1

8K

976-

OR

-18

4

L38

JJ

A A

JJ

14 3 2

A75

8-B

R-1

8A

757-

WH

-18

A75

6-P

U-1

8A

755-

PK

-18

1

A58

7-Y

L-18

5 64231

42351

A587-YL-18

6

N92

3-G

Y-18

G84

8-G

N-1

8F

846-

PU

-18

955-

BU

-18

952-

OR

-18

RA

BB

IT

2 W

AY

1 W

AY

PS

961-

BR

-18

7

8

N923-GY-18

N923-GY-18

N92

3-G

Y-14

198-

PK

-18

549-

PK

-18

198-

PK

-18

548-

GY-

18

A587-YL-18A587-YL-18

A587-YL-18

A587-YL-18

A587-YL-18

955-BU-18

955-BU-18

633-BU-18

954-GN-18

200-

BK

-18

200-BK

200-BK

200-

BK

-14

200-

BK

200-

BK

200-

BK

200-

BK

200-BK-14

200-BK-18

200-BK-18

576-PK-18

A

AUX PEDALON/OFF SOL

21

200-BK-18

A

L6L6

L6L6L6

N92

4-W

H-1

8

961-BR-18

547-

OR

-18

198-

PK

-18

546-

BU

-18

198-

PK

-18

200-

BK

-18

320-

OR

-18

151-

GN

-18

150-

RD

-18

150-

RD

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154-

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154-

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GN

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A

24

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306-

GN

-18

200-

BK

-18

21

A718-PU-18

309-GY-18616-BU

322-GY-18607-PK-18

304-WH-8

877-YL-4

101-RD-4

109-RD-6

147-PU-18

F774-WH-18F773-OR-18A761-PU-18K904-GN-18430-BU-18

K906-GN-18A771-PU-18

763-BU-18

111-RD-14

112-PU-14112-PU-14

189-RD-14189-RD-14

112-PU-14

A769-GY-18491-PK-18496-WH-18495-GN-18

112-PU-14

403-GN-18788-YL-18

A762-PU-18C468-BU-18405-GY-18492-GY-18519-PK-18

321-BR-18412-BU-18

111-RD-14

487-OR-18

200-

BK

-18

310-PU-18

107-RD103-RD-18

320-

OR

-18

168-RD-14140-BU

200-BK

151-

GN

-18

AK

200-BK-18

200-BK-18

578-BU-18

150-

RD

-18

150-

RD

-18

150-

RD

-18

150-

RD

-18

112-PU-6

K909-BU-18A587-YL-18A588-GN-18

196-

BU

151-GN-18

150-

RD

-18

308-YL-18307-OR-18

791-PK-18615-YL

786-GN-18149-PU

320-OR-18114-RD-18

K90

5-R

D-1

4

A770-PK-18

112-PU-14112-PU-14

200-BK

112-PU-14

K90

5-R

D-1

4

150-

RD

-18

112-

PU

-14

308-YL-18112-PU-14112-PU-14112-PU-14

140-

BU

149-

PU

147-

PU

-18

105-

RD

107-

RD

114-

RD

-18

191-

WH

-14

954-GN-18

115-

PK

-14

200-

BK

-18

200-BK-18

103-RD-18

A587-YL-18

403-GN-18

A771-PU-18

120-

YL

118-

GY

788-YL-18A762-PU-18763-BU-18412-BU-18

C468-BU-18

N924-WH-18

321-BR-18405-GY-18492-GY-18491-PK-18495-GN-18430-BU-18496-WH-18

K904-GN-18A761-PU-18487-OR-18

124-

GN

-14

129-

BU

-18

235-BK-14

200-BK-14

200-BK

961-BR-18

786-GN-18791-PK-18308-YL-18

307-OR-18578-BU-18

K906-GN-18A768-BU-18A769-GY-18A770-PK-18F774-WH-18F773-OR-18K909-BU-18310-PU-18

A588-GN-18

A588-GN-18

575-YL-18

152-BU-18

107-RD196-BU

320-OR-18

151-GN-18

129-BU-18

118-GY

512-GN-18511-BR-18509-WH-18508-PU-18

519-PK-18

952-

OR

-18

G84

8-G

N-1

8

954-

GN

-18

N92

3-G

Y-14

955-

BU

-18

N92

4-W

H-1

8

512-

GN

-18

F84

6-P

U-1

8

A58

7-Y

L-18

198-

PK

-18

200-

BK

-14

546-

BU

-18

L970

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18

511-

BR

-18

547-

OR

-18

548-

BU

-18

508-

PU

-18

200-BK-18

509-

WH

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200-BK-18200-BK

200-BK-18

779-WH-18

519-

PK

-18

124-

GN

-18

124-

GN

-18

779-WH-18

124-

GN

-14

779-WH-18779-WH-18

A424-WH-18A425-YL-18

780-PU-18780-PU-18780-PU-18

780-PU-18

LOW PRESSURESOL (A1)121-1491

12

HIGH PRESSURESOL (A2)156-9513

HIGH PRESSURESOL (A3)156-9513

780-PU-18

780-PU-18

A

2

113-

OR

-18

185-

YL-

1810

5-R

D12

9-B

U-1

811

8-G

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124-

GN

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403-GN-18

403-GN-18

403-GN-18403-GN-18

147-

PU

-18

200-

BK

-18

140-

BU

149-

PU

168-

RD

-14

114-

RD

-18

151-

GN

-18

320-

OR

-18

196-

BU

590-

GY-

1850

1-G

N-1

8A

586-

OR

-18

107-

RD

786-

GN

-18

791-

PK

-18

113-

OR

-18

308-

YL-

18

112-

PU

-14

307-

OR

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105-

RD

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8-B

R-1

8

549-

OR

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A75

5-P

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8

576-

PK

-18

575-

YL-

18

112-

PU

-14

578-

BU

-18

112-

PU

-14

112-

PU

-14

112-

PU

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124-

GN

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K91

5-G

N-1

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R-1

831

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A76

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A76

8-B

U-1

8K

906-

GN

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185-

YL-

18K

909-

BU

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K90

7-B

U-1

8A

770-

PK

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F77

2-W

H-1

8F

774-

WH

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F77

3-O

R-1

8F

771-

OR

-18

615-YL-18

235-

BK

-14

615-YL-18

235-

BK

-18

235-

BK

-18

308-

YL-

18A

758-

BR

-18

A75

5-P

K-1

8

K91

2-G

N-1

8K

911-

PK

-18

K91

5-G

N-1

8F

771-

OR

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F77

2-W

H-1

8K

907-

BU

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403-

GN

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487-

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A76

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904-

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496-

WH

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430-

BU

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495-

GN

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491-

PK

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492-

GY-

18

405-

GY-

1832

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468-

BU

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412-

BU

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763-

BU

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A76

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18

200-BK-18

1

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200-

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200-

BK

-18

200-

BK

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L6

320-

OR

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N923-GY-18

2

386-

PK

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306-

GN

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L29

200-BK

147-PU-18

111-

RD

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140-BU149-PU

168-RD-14114-RD-18

189-

RD

-14

151-GN-18

320-OR-18

112-

PU

-14

196-BU

112-

PU

-14

114-RD-18168-RD-14

151-

GN

-18

112-PU-14112-PU-14

2

112-PU-14

112-

PU

-14

A

185-

YL-

18

779-WH-18

780-PU-18200-BK-18 200-BK-18

A

780-PU-18

112-

PU

-14

200-BK-18780-PU-18

200-BK

112-

PU

-14

112-

PU

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196-

BU

140-

BU

107-

RD

114-

RD

-18

105-

RD

168-

RD

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149-

PU

191-

WH

-14

129-

BU

-18

118-

GY

124-

GN

-14

120-

YL

A

K909-BU-18196-BU

961-BR-18

791-PK-18615-YL

RELAY PANEL

786-GN-18

200-BK-18200-BK-18200-BK-18200-BK-18200-BK-18200-BK-18

J

A

3 7 91

309-

GY-

18308-YL-18

11

A718-PU-18

616-BU149-PU

786-GN-18322-GY-18

5

320-OR-18196-BU

A587-YL-18A588-GN-18

151-GN-18200-BK-18200-BK-18200-BK-18607-PK-18

615-YL

791-PK-18A770-PK-18

200-

BK

-18

200-BK-18

149-PU

200-

BK

-18

K909-BU-18

307-OR-18

200-BK-18

K909-BU-18

200-BK-18200-BK-18

306-GN-18

306-GN-18

200-BK-18

200-

BK

-18

K90

9-B

U-1

8A

770-

PK

-18

791-

PK

-18

615-

YL

607-

PK

-18

200-

BK

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151-

GN

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A58

8-G

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8A

587-

YL-

18

196-

BU

320-

OR

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322-

GY-

1878

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N-1

814

9-P

U61

6-B

U

A

A71

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U-1

8

2

306-

GN

-18

310-

PU

-18

200-

BK

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308-

YL-

18

1

308-

YL-

18

A77

0-P

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909-

BU

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791-PK-18115-PK-18115-PK-18

151-GN-18200-BK-18

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149-PU-18149-PU-18

149-PU

322-GY-18

320-OR-18

308-

YL-

18

K90

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U-1

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307-

OR

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200-

BK

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200-

BK

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112-PU-14112-PU-14

386-PK-18

149-PU140-BU

306-GN-18

103-RD-18

147-PU-18

1432

200-BK-14

200-BK-14

ROTARY SW155-2715

BK

BU

403-GN-18

6 12 354

A

J

200-BK-18311-WH-18

8

311-

WH

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310-

PU

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A

177-

RD

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177-

RD

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177-

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RD

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RD

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172-RD-18

196-BU

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RD

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GN

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PU

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147-

PU

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118-GY124-GN-14

12410 26

C468-BU-18

BN

A58

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A

12

185-YL-18

149-PU

1112

123456

196-

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789

10

4 314 32

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PU

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779-

WH

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12

180-GN

154-

RD

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111-

RD

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112-

PU

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112-

PU

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129-BU-18

877-YL-4

140-BU

105-RD107-RD

114-RD-18

25

147-PU-18

200-BK-18

115-PK-14120-YL

191-WH-14

35 4 13

A/C UNIT126-3375

S

62 1

INSP LAMP

10A10A15A10A10A10A

ENG GOV

15AJJ

FINE SWING SOL

ATCH-AUX CKTCAB/CHASSIS LAMPCONVERTERATCH-AUX CKTWASHER/WIPER

CIGAR LIGHTERA/C /HEATER

10A

HORN

FUSE10A 9W-144215A 9W-144130A 8T-9636

BACKUP

15A

DOME LAMP

KEY SWREFUELING PUMP

BOOM LAMPFLOW CONT SOL

10A

10A30A10A10A10A10A

10A

A761-PU-18

10A10A10A10A

15AE/P CONT

HYD LOCK SOL10A

SHUTDOWNO.W.D.AUX CKT SW PANEL

LUBRICATOR

306-GN-18

147-PU-18HYD LOCK SW

JJJJ

FUSE BASE111-4812

S

65147-

PU

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386-PK-18

306-GN-18

BKWH

AE B

8965

1211

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386-PK-18

306-

GN

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10

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98

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432

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YL-

18

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200-BK-18

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198-PK-18198-PK-18

115-

PK

-14

198-PK-18198-PK-18

113-

OR

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150-

RD

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154-

RD

-18

172-

RD

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185-

YL-

18

177-

RD

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115-

PK

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172-

RD

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189-

RD

154-

RD

-18

150-

RD

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111-

RD

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K90

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113-

OR

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113-

OR

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L22

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8172

AUX CKT113-OR-18113-OR-18

308-

YL-

18

SIS CONNECTOR3E-5136

E

200-

BK

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4

176-YL

B+

12V

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C53

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N-1

8C

538-

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200-

BK

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124-

GN

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519-

PK

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ATCHAM/FM RADIO

ME

MO

RY

+12

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139-

OR

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135-

BU

633-

BU

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210-

BK

103-

RD

120-

YL

152-

BU

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8-O

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537-

GN

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GR

OU

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152-

BU

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168-

RD

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177-

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168-RD-12

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EA

KE

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H+

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BU

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152-

BU

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SP

EA

KE

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103-

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168-RD-12

103-RD

K90

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D-1

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177-RD-12

168-

RD

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152-

BU

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SP

EA

KE

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198-PK-18

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7-G

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538-

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152-

BU

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120-

YL

198-PK-18

961-BR-18

SP

EA

KE

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103-

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633-

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135-

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139-

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135-

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139-

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519-

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200-

BK

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537-

GN

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210-

BK

511-

BR

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176-YL

509-

WH

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189-

RD

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189-

RD

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547-OR-18

546-BU-18

586-BR-18

200-

BK

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A425-YL-18

112-

PU

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112-

PU

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308-

YL-

18

113-OR-18113-OR-18

AUX CKT

512-

GN

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198-

PK

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547-

OR

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198-

PK

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113-

OR

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113-

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RD

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150-

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154-

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189-

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172-

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115-

PK

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154-

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150-

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113-

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115-

PK

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177-RD-14

150-RD-18

L908L909

235

150-RD-18

K905-RD-14

MM F

10

200-BK615-YL

CAB LAMP5I-8250

1 23

A424-WH-187

45

615-YL200-BK

6

A425-YL-18

L17

176-YL

308-YL-18

78

J

A

308-

YL-

18

306-GN-18

586-BR-18

L56

306-GN-18

200-BK

ATCH START AIDCOOLANT TEMP SW.3E-6449

21

B

ATCH STARTAID SOL3E-6332

T

147-

PU

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546-

BU

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J JJ J

HYD LOCK SW 147-PU-18

LUBRICATOR

SW PANELAUX CKT

176-

YL

SHUTDOWN

177-

RD

-14

200-BK-14

200-BK-14

306-

GN

-18

AIH COOLANTTEMP SENSOR125-4812

1

B

21

GR

OU

ND

ON

(KE

Y)

12

AIR CLEANER SW 109-9330

PUMP DISCHARGEPRESS SENSOR106-0178

SIG

NA

L

GR

OU

ND

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BK

-18

BR

-18

YL-

18B C

AIR HEATER6I-4753

T

B

GND

F/B+B

ACCEL

B B

B

BK

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21

DECEL6

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B

ENG GOVACTUATOR106-0126

A A

HH

B

CB

BB

CC

C

C

C

L57

KEY

L57

REFRIGERANTLOW PRESS SW 114-5333

ALTERNATOR 9W-3043

ATCH AUTOLUBRICATION PUMP127-5264

ATCHTRAVEL ALARM 3E-7738

ENG OIL LEVEL SW111-4759

12

2

2

1

N92

3-G

Y-14

10A

A756-PU-18

615-YL

B

B

191-

WH

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COOLANTLEVEL SW096-0744

12

T

COOLANT TEMPSENSOR 4I-5394

MOTOR

C B

BATMTR

SG

B

STARTERMOTOR104-7040

B-

WASHER 7T-8890

A

21

ENGSHUTDOWN SOL 8C-3663

ENG OILPRESS SW 3E-6455

CHASSIS

BK-18RD-18

ENG SPEEDPICKUP 6V-2455

B

BATTERY 3T-5760

POS NEGNEGPOS

A

CBA

BU-18

B+

RDALT

A/C CLUTCHSOL3E-1906

MOTOR

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HYD LOCK SOL

E/P CONT

L57

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4-W

H-1

8

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N-1

8

200-

BK

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200-

BK

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200-

BK

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200-

BK

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200-

BK

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A769-GY-18A768-BU-18

320-OR-18

763-BU-18

200-BK-18200-BK-18200-BK-18

L972-BU-18200-BK-18

549-PK-18198-PK-18

MULTISWITCH JOSTICK 122-4828

RIGHT SW

548-GY-18198-PK-18

LEFT SW

H

15A

10A

114-RD-18

10A

A76

8-B

U-1

8A

769-

GY-

18

10A10A10A

10A10A10A10A30A10A

10A

FLOW CONT SOL

307-OR-18

BOOM LAMP

REFUELING PUMPKEY SW

DOME LAMP

101-RD-4304-WH-8

15A

311-WH-18

BACKUP

HORN

403-GN-18

10A

309-GY-18492-GY-18

A718-PU-18

A762-PU-18788-YL-18405-GY-18

A/C /HEATERCIGAR LIGHTER

F774-WH-18F773-OR-18A761-PU-18

WASHER/WIPERATCH-AUX CKTCONVERTERCAB/CHASSIS LAMPATCH-AUX CKT

C468-BU-18

FINE SWING SOL

549-

PK

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198-

PK

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548-

GY-

1819

8-P

K-1

854

9-P

K-1

8

103-RD

42

A

H

31

A587-YL-18

A770-PK-18

200-

BK

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0-B

K-1

820

0-B

K-6

200-BK-4

A718-PU-18200-BK-18

492-GY-18200-BK-18

309-GY-18

403-GN-18

200-BK-6

200-

BK

-18

B

405-GY-18788-YL-18

A762-PU-18

200-

BK

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304-WH-8

RD-00RD-00

200-BK-4200-BK-6200-BK-10

200-BK

200-BK-18

200-

BK

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200-BK-18200-BK-18

200-BK-18

200-BK-18

301-BU-10

513-OR-18200-BK-18

200-BK-10301-BU-10

405-GY-18200-BK-18

788-YL-18A762-PU-18

308-YL-18200-BK-18

K90

9-B

U-1

8

12

B

6

101-RD-4

308-

YL-

1830

8-Y

L-18

112-PU-6

L55

L54

L54

A587-YL-18A588-GN-18

151-GN-18

308-YL-18

307-OR-18

791-PK-18615-YL

308-

YL-

18

786-GN-18149-PU

320-OR-18114-RD-18

A770-PK-18

K909-BU-18196-BU

ATCH ROTATINGBEACON SW

200-BK

A75

8-B

R-1

8

POS NEG NEGPOS

A75

7-W

H-1

8

A75

6-P

U-1

8

A75

5-P

K-1

8

L4L9

72-B

U-1

8

L968

-OR

-18

L969

-WH

-18

K90

7-B

U-1

8F

772-

WH

-18

ONE TOUCHLOW IDLE SW

F77

1-O

R-1

8

200-

BK

-18

H

ATCH AUX HYDCONT SW111-4787

L20

L16 L16

9 811 3

K909-BU-18

MOTOR

A

L55

308-YL-18

S

J J 15A

ENG GOV10A10A10A15A10A10A

INSP LAMP

12 6

508-

PU

-18

45 3

111-

RD

-14

Y/G

Y/W

200-BK-14

UPPER WIPER MOTOR 131-0399

L20

F

405-GY-18

BK

-00

200-BK-18

304-WH-8

308-YL-18

M

A718-PU-18

309-GY-18616-BU

322-GY-18607-PK-18

DISCONNECT SW. 7N-0718 7N-0719(NOTE C)

ALT BREAKER 9S-0174

OUT 1+B

IN 2

IN 1GND

OUT 2

UU

ZZ

YYLL

UU

VV

XX WW

546312

BACKUPRESISTOR102-8016

121

HYD LOCK SOL RELAY111-4871

5

3

4

6

2

1

789

10

1112

FORINSP LAMP9R-7941

8

2

1011

34

9TIMER RELAY111-4870

7

MAIN RELAY 3T-0376

CAB/CHASSIS LAMP RELAY111-4871

6

578-BU-18

XX

5

4 5

60A

ATTACHMENT-ENG OILPRESS SW

3E-6455 (NOTE H)

NEUTRALSTART RELAY111-4871

BK-18

BA

C

START RELAY125-1302

6

3

12

21

7

11

89

HORN RELAY111-4871

BOOM LAMP RELAY111-4871

10

DIODE121-1022

DIODE121-1022

12V SOCKET9R-7941

615-

YL

LL KK

RD-18

1 2

KE

Y S

W.(

ON

)

13

24

HEATERCONT UNIT104-3204

HEATERRELAY116-0114

RESISTOR 7Y-8242

KK

ZZ

CH

EC

K T

ER

M.

RE

LAY

KE

Y S

W.(

STA

RT

)

GN

D

IND

ICAT

OR

RE

GU

LATO

RT

EM

P.

200-

BK

200-

BK

200-

BK

200-

BK

-18

615-

YL-

1861

5-Y

L

QQ 134-6475 I-6

NN 153-7794 I-6PP 160-0973 I-6

103-

RD

-18

FDOME LAMP096-0721

12

103-

RD

-18

C538-OR-18

C537-GN-18

C537-GN-18C538-OR-18

524-BU120-YL

120-YL

524-BU

191-WH-14

615-YL

135-BU

200-BK-18

139-OR-18

638-WH

955-BU-18

35 47 18 6

L975

-PK

-18

L975-PK-18

L975-PK-18L975-PK-18

L975-PK-18

L973-GN-18

L977-YL-18L978-GY-18L974-GN-18

L971-GN-18

L977-YL-18

L978-GY-18

L969

-WH

-18

L968

-OR

-18

L973

-GN

-18

L972

-BU

-18

L973-GN-1820

0-B

K

L971-GN-18

L977-YL-18L974-GN-18L978-GY-18

ENG/PUMP CONT 126-2981

L971-GN-18L970-GY-18

L977-YL-18L974-GN-18

L969-WH-18

200-

BK

200-BK

200-BK

152-BU

638-WH8630-BU-18

200-BK

506-PU

RELAY

ATCHBEACON

8630-BU-18638-WH

L972-BU-18

L970

-GY-

18

L971

-GN

-18

L978

-GY-

18

L975

-PK

-18

763-

BU

-18

L977

-YL-

18L9

74-G

N-1

8L9

78-G

Y-18

L969

-WH

-18

L968

-OR

-18

L972

-BU

-18

109-RD-6

L977

-YL-

18

495-GN-18

109-RD-6

306-GN-18

200-

BK

-18

306-GN-18

306-GN-18

200-

BK

-18

C

AB

200-

BK

-18

152-BU

K906-GN-18

177-RD-14177-RD-14

177-

RD

-14

177-

RD

-14

177-

RD

-14

177-

RD

-14

325-

PK

-18

177-RD-14

L53L53

L52L52

310-PU-18

325-PK-18

310-PU-18

310-PU-18

877-YL-4101-RD-4

177-

RD

-617

7-R

D-1

4

200-BK-18

955-BU-18

N924-WH-18

326-RD

A768-BU-18

BKYL

172-RD-18

BA

B

BA

A

C

115-PK-14

GG (NOTE C)

RD-00

RD-00

C AB

BBBB

21

177-RD-14

B

177-RD-14

177-RD-14177-RD-14

506-PU

177-RD-14177-RD-14

177-RD-14177-RD-14

112-

PU

-6

BOOM RAISEPRESS SW106-0180

12

B

212

1

ENG/PUMP CONTSOL111-9916

LEVEL FINISHSOL121-1490

AC

21

TRENCHING SOL121-1490

TRAVEL SPEEDSOL121-1491

N

21

B

122

1

FUEL LEVELSENSOR105-9911

306-GN-18

ATCHREFUELING SW 5C-6108

21

B

21

SWINGBRAKE SOL121-1491

IMPLEMENT PRESS SW106-0179

TRAVELPRESS SW106-0179

B

120-YL115-PK-14

147-PU-18

114-RD-18

107-RD105-RD

140-BU

177-

RD

-14

129-BU-18

154-

RD

-18

815

1-G

N-1

8

180-GN

320-

OR

-18

200-

BK

-18

A75

6-P

U-1

8

A757-WH-18

AUX BACKUP SW

CBAL5

719

1-W

H-1

4

N92

4-W

H-1

8

JJ

NN

A

JJ

A

149-PU

185-YL-18

A587-YL-18

JJ

A75

7-W

H-1

8

6 210

N923-GY-14191-WH-14

124-GN-14

112-

PU

-14

112-

PU

-14

118-GY

147-

PU

-18

A588-GN-18

VV

200-

BK

-18

AD

AD

177-

RD

-6

109-

RD

-6

101-

RD

-6

101-

RD

-610

1-R

D-6

150-RD-18

MAIN BREAKER 9S-0174

151-GN-18

210-BK

112-PU-14

3

111-RD-14308-YL-18

200-BK

307-OR-18

200-BK

A587-YL-18

200-BK-14

200-BK-14

K912-GN-18K911-PK-18

403-GN-18

147-

PU

-18

524-BU

615-YL-18

K911-PK-18K912-GN-18

1

N92

3-G

Y-14

168-

RD

-14

A586-OR-18

152-

BU

152-

BU

-18

152-

BU

-14

196-BU

172-RD-18

A425-YL-18

590-GY-18501-GN-18

A75

5-P

K-1

8

A75

6-P

U-1

8

A75

7-W

H-1

8

A75

8-B

R-1

8L9

72-B

U-1

8

200-BK-14103-RD-18

K91

5-G

N-1

8

168-

RD

-14

118-GY129-BU-18615-YL-18

403-GN-18

633-BU-18638-WH

139-OR-18135-BU

135-BU

2

L40

210-BK200-BK-14

L26

1

103-RD-18512-GN-18511-BR-18509-WH-18508-PU-18

615-YL

615-YL

235-BK-14

200-BK-14

200-BK-14

200-BK

506-PU

590-GY-18501-GN-18

A586-OR-18

A75

5-P

K-1

8

103-RD-18103-RD-18

152-

BU

152-BU-18152-BU

152-BU-18

508-PU-18509-WH-18

N92

3-G

Y-18

C

511-BR-18

152-BU

512-GN-18129-BU-18

L909-BU-18

103-RD

118-GY

235-BK-14

2

L908-OR-18

524-BU

N92

3-G

Y-18

N92

3-G

Y-14

177-

RD

-14

177-

RD

-14

177-

RD

-14

4

NN

177-

RD

-14

QQ

200-

BK

-18

A75

6-P

U-1

8

A75

7-W

H-1

8

308-

YL-

18F

771-

OR

-18

F77

2-W

H-1

8L9

69-W

H-1

8L9

68-O

R-1

8K

915-

GN

-18

K90

7-B

U-1

8

235-BK-18

235-BK-18L909-BU-18L908-OR-18

196-BU

A

J

4 9

A75

8-B

R-1

8

308-

YL-

18

191-

WH

-14

8 7 2 5 3 1611

A84

8-P

K-1

8A

847-

YL-

18

118-GY

12

A A

7 8165432

PLATFORM

GROUND STRAP 7G-1060

L40

H H

306-GN-18

152-BU-18

200-BK-18

200-BK

200-BK-14

J

A

A424-WH-18

4 5 32 16

K99

7-B

U-1

8

112-

PU

-14

PLATFORM

A

112-

PU

-14

68 17 4 5 3 2

200-BK-14

200-BK-18

118-GY

A

L56

954-GN-18

954-GN-18

118-GY

200-BK-14

200-BK-18

107-RD

403-GN-18

L40

103-RD

L908-OR-18

152-

BU

L17

118-

GY

112-PU-6

152-

BU

103-RD

200-

BK

-14

L19

C

235-

BK

-18

MONITOR +B OUT

L968-OR-18

A761-PU-18

L978-GY-18

A755-PK-18

763-BU-18

A757-WH-18

L909

-BU

-18

R

L908

-OR

-18

2

A771-PU-18

306-GN-18

K997-BU-18

788-YL-18A762-PU-18

412-BU-18

430-BU-18

321-BR-18405-GY-18492-GY-18491-PK-18495-GN-18

A758-BR-18

496-WH-18

638-

WH

308-YL-18

L975-PK-18

638-

WH

118-

GY

524-

BU

210-

BK

2

1

4

200-

BK

-14

615-

YL

3

NOTE C : USE WITH COLD WEATHER.

200-BK

ZZ 111-4831 F-11

200-

BK

-14

K99

7-B

U-1

8

103-

RD

-18

5867

135-

BU

135-

BU

210-

BK

210-

BK

200-

BK

135-

BU

21

K99

7-B

U-1

8590-

GY-

1850

1-G

N-1

8

129-

BU

-18

403-

GN

-18

A587-YL-18L3

954-

GN

-18

952-OR-18

952-OR-18

952-OR-18

952-OR-18

779-

WH

-18

780-

PU

-18

200-

BK

-18

235-BK-18

779-

WH

-18

K99

7-B

U-1

8

779-WH-18

780-PU-18779-WH-18

780-PU-18779-WH-18

779-WH-18

780-PU-18779-WH-18779-WH-18

235-BK-18

23

K99

7-B

U-1

8

954-

GN

-1863

3-B

U-1

8

235-BK-18

K91

1-P

K-1

8K

912-

GN

-18

C468-BU-18

K907-BU-18F772-WH-18F771-OR-18

K915-GN-18

K911-PK-18K912-GN-18

60A

103-

RD

-18

615-

YL-

18

A58

6-O

R-1

8

506-

PU

M

139-

OR

-18

L909-BU-18L908-OR-18

487-OR-18

120-

YL

K904-GN-18

MM

K90

5-R

D-1

8

235-BK-18

615-YL

C53

7-G

N-1

8

615-YL

512-

GN

-18

511-

BR

-18

509-

WH

-18

508-

PU

-18

C53

8-O

R-1

8

103-

RD

-18

L909-BU-18

THROTTLE DIAL S1THROTTLE DIAL S2THROTTLE DIAL S3THROTTLE DIAL S4

GOV ACTR (A)

EPR VALVE (+)

GOV ACTR (B)

GOV ACTR FDBK

COOLANT LEVEL SWTRAVEL SPEED SOLENG SPEED SENSOR (-)ENG SPEED SENSOR (+)

TRENCHING SOLIMPLEMENT PRESS SW

ENG OIL LEVEL SW

FUEL LEVEL SENSOR

FRONT PUMP PRESS SENSORHYD OIL LEVEL SWAIR CLEANER SENSOR

HYD OIL TEMP SENSOR

RS485 - (VALVE CONT)RS485 + (VALVE CONT)

RS232C (GND)RS232C (RX)

COOLANT SENSOR

9

2010

28

31261330293540 2

6

39

33

24252215

ALTERNATOR (R TERM)

RS485 - (RH JOYSTICK)

738

12

TRAVEL ALARMENG OIL PRESS SW

36

SWING BRAKE SOLEPR VALVE (-)

17

21 8

RS485 + (LH JOYSTICK)

35

CAB

36

RS485 - (LH JOYSTICK)RS485 + (PEDAL)

67

RS485 + (SEMI AUTO)

RS485 - (PEDAL)RS485 + (RADIO CONT)

8

HYD TANK PRESS. SW

RS485 + (MONITOR)

RS485 - (SEMI AUTO)

HYD TANK INDICATOR

RS485 + (RH JOYSTICK)

RS485 - (MONITOR)

27

18 TRAVEL PRESS SW

HYD OIL FILTER INDICATOR

1

9

RS485 - (RADIO CONT)RS485 + (ELEC GOV)

10

+B+B

AIH INDICATOR

FINE SWING SW

2

BOOM RAISE PRESS SWLEVEL FINISH SOL

DUAL PWR SOL

AUX HYD PRESS SW

2930

18

KEY SW ON

RS485 - (ELEC GOV)19

12

40

2

4

2520

LOW IDLE SW

21

17

11122

343242314131615

5

3231

26

2827

39

38

37

GNDGND

HAMMER PRESS. SW

RS232C (TX)

KEY SW START

A

LUNCH BOX LIGHT

2 3 4 5 61 87

37

4 3

OPTION SENSOR (PWM)

1

1619

5

OPTION SENSOR (PWM)

615-YL

323314

11

34

1

6 107 121524

615-YL

CONVERTER131-0327

76543 81 2 5 4 3 2 16

F

F

F

F E E

A A A 118-GY

L6

F

ANTENNA106-0036

GND24V BAT IN MEM24V SW. IN

12V MEM OUTGND12V SW. OUT

177-

RD

-14

A424-WH-18

2 34 56 1 87

JOYSTICK +B OUT

BK

-00

RD-00

RD-00

A

CHASSIS

DD

DD

GG(NOTE C)

CC

BK

-00

FF (NOTE C)

BB

EE (NOTE C)

AA

L15

L15

BB

115-PK-14

189-RD

154-RD-18

111-RD-14

150-RD-18

K997-BU-18

189-RD

154-RD-18

111-RD-14

150-RD-18BBB

N

B

A

A

L45

L15

L50

L45

RELAY PANEL

115-PK-14114-RD-18114-RD-18114-RD-18

L15

D

D

DA

A

A

L48

L47

114-

RD

-18

150-

RD

-18

189-RD

154-RD-18

A49

5-G

Y-18

115-

PK

-14

115-PK-14

115-PK-14

A495-GY-18

A495-GY-18

150-RD-18

114-RD-18

154-RD-18

189-RD111-RD-14

K909-BU-18

K99

7-B

U-1

8

150-RD-18

306-

GN

-18

K90

9-B

U-1

8

786-GN-18

177-RD-14

196-

BU

320-

OR

-18

114-

RD

-18

322-

GY-

18

L47

308-

YL-

1830

8-Y

L-18

A49

5-G

Y-18

111-

RD

-14

189-

RD

154-

RD

-18

154-RD-18

189-RD

177-RD-14111-RD-14

A495-GY-18

RELAY PANEL

L50

L48

A

B

B

B

B

DB

L51

321-

BR

-18

L49

L51

L49

L50

L51

A587-YL-18

L44

L42

L41

L29

L30

L44

L42

L41

L29

L30

L30L29L41L42L44

L30L29L41L42L44

L42

L41

L29

L30

43

5

200-

BK

SENSOR O.W.D. 132-7315

168-

RD

-18

4

5

BUZZER AS113-4683

168-

RD

-18

200-BK-14

200-BK-18200-BK-18

491-PK-18

200-

BK

-18

496-

WH

-18

L21

487-

OR

-18

491-

PK

-18

168-

RD

-18

7

140-BU

200-

BK

200-

BK

-18

200-

BK

-18

L976

-GN

-18

321-

BR

-18

200-

BK

140-

BU

430-

BU

-18

412-

BU

-18

310-

PU

-18

311-

WH

-18

200-

BK

-18

200-

BK

-18

AE 121-1044 A-6

430-

BU

-18

200-

BK

-18

513-

OR

-18

519-

PK

-18

200-

BK

-18

412-

BU

-18

1 2

B

ORPK

140-

BU

200-

BK

326-RD

L971-GN-18

200-

BK

-18

A771-PU-18L974-GN-18K906-GN-18

KK 111-4833 F-11

200-

BK

-18

1

T

2 HYD OILLEVEL SW111-4760

HYD OILTEMP SENDER 4I-5394

B

B

B

AB

200-BK-18200-BK-18200-BK-18200-BK-18

C

+B

L971-GN-18

A771-PU-18

SIGNAL

L974-GN-18200-BK-18

200-BK-18

200-BK-18

GROUND

HYD OILFILTER SW116-3660

B

200-BK-18496-WH-18

COMPONENTS ARE SHOWN INSTALLED ON A FULLYOPERABLE MACHINE WITH THE KEY AND ENGINE OFF.

LL 111-4832 F-11

HH 132-1806 A-12GG 116-0242 I-11 FF 116-0080 H-11 EE 121-0996 A-11 DD 111-4881 I-11CC 143-1646 I-11BB 116-0080 I-11AA 121-0997 A-11

CABLE AS.

VV 128-8937 G-10

WIRE AS.

R 128-8876 A-3

200-BK-18487-OR-18

N 116-0247 E-11M 117-7028 C-6L 7Y-3994 A-1K 148-5179 B-1J 175-1317 H-3H 175-3000 D-3G 4I-5396 B-1F 154-8149 C-6E 130-6568 C-5D 155-1788 G-11C 130-6572 A-12B 144-8419 B-3

GYPUBR

REDWHITEORANGEYELLOWPINK

ABBREV COLOR

BLACKGRAYPURPLEBROWN

DESCRIPTIONSYMBOL

CONNECTOR

ELECTRICAL CONNECTIONTO VEHICLE STRUCTURE

INTERNAL ELECTRICALCONNECTION TO SURFACEOF COMPONENT

BLADE, SPADE, RING,OR SCREW TERMINAL

BKPKYLORWHRD

GNBU

GREENBLUE

CIRCUIT CONNECTED

CIRCUIT NOT CONNECTED

ATCH WIRE, CABLE,COMPONENT

L# CIRCUIT GROUPINGDESIGNATION

IDENT PART NO. LOC

176-

YL

12

SIGNAL IN

HARNESS AS.

SIGNAL OUT

310-

PU

-18

L971-GN-18A771-PU-18L974-GN-18K906-GN-18

495-GN-18616-BU

322-GY-18

200-

BK

-18

607-PK-18168-RD-14

487-OR-18

A425-YL-18

491-PK-18

308-YL-18

L977-YL-18763-BU-18

L978-GY-18A768-BU-18A769-GY-18K904-GN-18K997-BU-18

200-BK200-BK

A

779-

WH

-18

2

2 1NOTE E : NOT NECESSARY FOR ELECTRIC OPENABLE WINDSHIELD.

12

JJ JJ

ATCH-FOOTSWITCHPEDAL-RH

ATCH-FOOTSWITCHPEDAL-LH

NN

HAMMER 2SOL (ON/OFF)

116-3413

2

172-RD-18A761-PU-18F773-OR-18F774-WH-18

326-RD405-GY-18788-YL-18

A762-PU-18C468-BU-18

101-RD-4304-WH-8

403-GN-18109-RD-6

309-GY-18492-GY-18

A718-PU-18877-YL-4

311-WH-18200-BK

200-BK

124-

GN

-18

311-WH-18321-WH-18

519-PK-18

412-BU-18430-BU-18

A53

7-P

K-1

821

200-

BK

-18

310-PU-18

586-

BR

-18

1

105-

RD

576-

PK

-18

575-

YL-

18F

773-

OR

-18

F77

4-W

H-1

8A

770-

PK

-18

A76

9-G

Y-18

A76

8-B

U-1

8K

906-

GN

-18

615-

YL-

18

L973

-GN

-18

578-

BU

-18

307-

OR

-18

308-

YL-

18

791-

PK

-18

786-

GN

-18

308-

YL-

18

113-

OR

-18

A58

6-O

R-1

850

1-G

N-1

859

0-G

Y-18

L56

A718-PU-18309-GY-18

616-BU322-GY-18607-PK-18

200-

BK

-18

304-WH-8877-YL-4101-RD-4109-RD-6

JJ 153-1149 H-5

MM 111-4846 I-4

152-

BU

L973-GN-18147-PU-18

K90

9-B

U-1

8

200-BK-18

6V-5821(NOTE C) 495-GN-18

616-BU322-GY-18607-PK-18

168-RD-14

L18

495-GN-18200-BK-18

616-BU322-GY-18607-PK-18168-RD-14

JJ

176-

YL

NN 120

0-B

K

53 61 4 2

L970

-GY-

18

ATCHSEAT WITHSEAT HEATER111-6458

110 8 11 12 9 10 11 432

1

98

2

7654321 4 5 61

12 33

HH

AA

H

2

A

H

4

A

NOTE B ; USE WITH SHORT BOOM.

A75

7-W

H-1

8

200-

BK

-18

172-RD-18

877-YL-4

3

L44

L43

L44

B CHASSIS

L42

200-

BK

-18

L41

L29

L30

326-RD

A53

7-P

K-1

812

4-G

N-1

8

172-RD-18

876

C

EEAA

L969-WH-18

L43

L43

K99

7-B

U-1

8

200-BK-18

CHASSIS

L30

L10

200-

BK

-18

A770-PK-18

L968-OR-18

200-

BK

-18

200-

BK

-18

5

200-

BK

-18

185-

YL-

18

4

S 136-4731 H-2

L29

L10

L10

200-

BK

L8

200-

BK

L30

L29

L41L4

2

L42

L41

321

JJ

NN

A75

8-B

R-1

8A

757-

WH

-18

A75

6-P

U-1

8A

755-

PK

-18

200-

BK

-18

200-

BK

-18

N92

3-G

Y-14

L15

952-

OR

-18

F84

6-P

U-1

8

G84

8-G

N-1

8

955-

BU

-18

954-

GN

-18

615-

YL-

1861

5-Y

L-18

200-BK-18

K97

3-B

R-1

8K

974-

PU

-18

K97

5-W

H-1

8K

976-

OR

-18

L56

L56

200-

BK

-18

200-

BK

-18

200-

BK

-18

L15

549-

PK

-18

200-

BK

-18

548-

GY-

1854

7-O

R-1

854

6-B

U-1

8

CHASSIS

YY 111-4830 F-11

615-

YL-

18

200-

BK

-18

ANTENNA CABLE111-4846

N92

4-W

H-1

8

L970

-GY-

18

575-

YL-

18

200-

BK

-18

576-

PK

-18

A53

7-P

K-1

8

578-

BU

-18

200-

BK

-14

L973

-GN

-18

152-

BU

-18

6

200-

BK

-18

8

200-

BK

-18

5 4

200-

BK

-18

37

K907-BU-18

21

200-

BK

-18

200-

BK

-18

615-

YL-

1861

5-Y

L-18

586-

BR

-18

200-

BK

-18

200-

BK

-18

L34

615-

YL-

18

200-

BK

-18

K909-BU-18

200-

BK

-18

H

200-

BK

-18

200-

BK

-18

549-

PK

-18

198-

PK

-18

XX 111-4829 F-11

548-

GY-

1819

8-P

K-1

8

200-

BK

-18

200-

BK

-18

185-YL-18

K909-BU-18

L25

524-

BU

L16

L19

L3

L25

L33

326-

RD

326-

RD

L21

L32

L31

L18

L9 L8 L12

L13

L13L12L11

L8L9

L10

L32L31

HH

L33

L33

L33

L33

K91

5-G

N-1

8

L20

308-

YL-

18

L19L3

L25L4

L4L25

L3L19

L16

L32

L31

L4L25

L3L19L20

L20

L19

L20

L25

L3 L4

103-RD

L19

L20

L25

L2

K997-BU-18

K997-BU-18

K99

7-B

U-1

8

615-

YL-

18

615-

YL-

18

L27

ATCH ROTATING BEACON LAMP

L27

L26

F771-OR-18F773-OR-18F774-WH-18F772-WH-18

615-

YL-

18

A769-GY-18

T 116-0096 A-4

152-

BU

-18

615-

YL-

18

A768-BU-18

F

A

2L25

L30

K906-GN-18

615-

YL-

18

185-YL-18

L29

200-

BK

-18

WW 128-8938 F-11

310-

PU

-18

200-

BK

-18

549-

PK

-18

200-

BK

-18

615-

YL-

18

615-

YL-

18

1

168-RD-14

200-

BK

-18

168-RD-14

H

ATCH STARTAID SW111-4784

168-RD-18

185-YL-18

L4

200-BK-18

L5

2

ATCH AUX SW

H

L11

ATCHSWING CONT SW111-4788

115-PK-14

HHH

ATCH O.W.D.132-1828

H

BACKUP EPR VALVE SW114-0421

H HBACKUPGOV SW110-7884

ATCH SEATHEATER SW111-4783

H

506-PU506-PU

A

L22

J

5 111 973

A

J

176-

YL

BA

308-

YL-

18

A 152-7674 C-2

120-

YL

124-

GN

-14

118-

GY

129-

BU

-18

191-

WH

-14

149-

PU

168-

RD

-14

105-

RD

114-

RD

-18

107-

RD

140-

BU

196-

BU

112-

PU

-14

112-

PU

-14

112-

PU

-14

308-

YL-

18

112-

PU

-14

112-

PU

-14

185-

YL-

18

112-

PU

-14

151-

GN

-18

112-

PU

-14

112-

PU

-14

200-

BK

-18

189-

RD

-14

111-

RD

-14

200-

BK

-18

151-

GN

-18

547-

OR

-18

198-

PK

-18

546-

BU

-18

150-

RD

-18

154-

RD

-18

LEFT SW

CBA

198-

PK

-18

168-RD-18

AC

616-BU200-BK

200-BK-18322-GY-18

546-

BU

-18

RIGHT SW

L16

MULTISWITCH JOSTICK 122-4829

198-

PK

-18

547-

OR

-18

198-

PK

-18

J

200-BK

NEUTRAL STARTLIMIT SW111-4799

HORN SW128-2134

200-BK-18

B

320-

OR

-18

200-BK-18200-BK-18200-BK-18200-BK-18

200-BK-14

L976-GN-18

616-BU

365-YL-18

AC AC 132-1827 A-4

200-BK-18

322-GY-18322-GY-18

322-GY-18200-BK-18

607-PK-18322-GY-18

200-BK-18168-RD-14200-BK

200-BK-18

325-

PK

-18 20

0-B

K-1

432

3-W

H-1

4

325-PK-18

365-

YL-

18

L976

-GN

-18

112-

PU

-14

112-

PU

-14

112-

PU

-14

112-

PU

-14

L4

112-

PU

-14

107-

RD

196-

BU

320-

OR

-18

151-

GN

-18

114-

RD

-18

365-

YL-

1836

5-Y

L-18

L976

-GN

-18

L976

-GN

-18

200-

BK

200-

BK

-18

ATCH AUX SW

8630

-BU

-18

615-YL

A758-BR-18

118-GY

115-PK-14

111-RD-14

168-

RD

-14

149-

PU

140-

BU

U 116-0098 A-4

365-

YL-

18

307-OR-18

A756-PU-18

615-YL-18

A75

6-P

U-1

8

200-

BK

-18

191-

WH

-14

147-

PU

-18

8630

-BU

-18

L976

-GN

-18

L976

-GN

-18

575-YL-18152-BU-18576-PK-18

A755-PK-18

147-PU-18

A58

7-Y

L-18

L973-GN-18

124-

GN

-14

118-

GY

129-

BU

-18

105-

RD

185-

YL-

1811

3-O

R-1

8

633-

BU

-18

N92

3-G

Y-14

172-

RD

-18

124-

GN

-14

200-BK-18

105-RD

A586-OR-18

168-

RD

-18

615-

YL-

1861

5-Y

L-18

200-

BK

-18

200-

BK

-18

112-

PU

-14

124-

GN

-18

124-

GN

-18

113-

OR

-18

501-GN-18

103-

RD

519-

PK

-18

509-

WH

-18

508-

PU

-18

A425-YL-18

322-GY-18

150-RD-18

K912-GN-18

511-

BR

-18

616-BU

201-BK-18

CONT O.W.D.132-5096

586-

BR

-18

512-

GN

-18

A42

4-W

H-1

8A

425-

YL-

18

200-

BK

CO

NS

OL

SW

SE

NS

OR

2

GN

DS

EN

SO

R 1

65

+ 2

4V

4321

L16

L54

L55

L20L19L3

103-RD-18

L16

L40

L38

L21

L20L19L3

L18

L3L19

L16

L20

L45

308-YL-18

54321

A

BU-18

A424-WH-18

200-BK-18

8630

-BU

-18

FINE SWING SOL 107-7056

519-PK-18

519-PK-18

154-RD-18

189-RD172-RD-18

L22

L15

K905-RD-14

L56

111-RD-14

150-RD-18

L38

L17

616-BU200-BK

L40

308-YL-18

L16

200-

BK

-18

200-

BK

-18

L16

200-BK-18

519-PK-18

200-BK-18

200-

BK

-18

BLOCK AS.121-1023

L3

961-

BR

-18

L25

L40

L38

L21

L20L19L3

L18

L18

L3L19L20

L21

L38

129-

BU

-18

308-

YL-

18

200-BK-18

152-

BU

-18

124-

GN

-14

118-

GY

112-PU-14

308-

YL-

18

120-

YL

OPERATOR STATION

200-BK-18

607-PK-18

115-

PK

-14

191-

WH

-14

24

114-

RD

-18

L40

L16

1

107-

RD

3

105-

RD

961-

BR

-18

MOTOR

L20

L19

961-BR-18

200-BK-14

7

8630-BU-18

L25

-

4

K911-PK-18

590-GY-18

L20

615-

YL-

18

6

200-BK-18N923-GY-18

9

L16

200-BK-18

403-GN-18

318

129-BU-18

C538-OR-18C537-GN-18

S

52

200-BK-18

500-BR-18

201-BK-18

118-GY

200-BK-18

524-BU

633-BU-18

638-WH

139-OR-18

WW

WIPER CONT127-9838

323-WH-14

B

500-BR-18

506-PU

177-

RD

-8

+

168-RD-14168-RD-14

177-

RD

-8

200-BK616-BU

L16

LOWER WIPER MOTOR 131-0398

L40

L38

L21

L40

A

152-

BU

-18

308-YL-18

200-BK-18

113-OR-18791-PK-18

AD 128-8936 I-11

786-GN-18

306-

GN

-18

A586-OR-18501-GN-18590-GY-18

147-

PU

-18

149-

PU

140-

BU

L38

177-RD-8

A588-GN-18

306-

GN

-18

6

A

154-RD-18

C537-GN-18

K905-RD-14K905-RD-14

C538-OR-18

210-BK135-BU120-YL

L20

L3L19

A424-WH-18

B325-PK-182

AB

41

200-BK-18

386-PK-18

1

386-

PK

-18

2

B

386-PK-18

2 1

496-WH-18

189-RD172-RD-18

3

L20

L5

L11

L12

H

1

L6

E

CAB

U U

ATCHREFUELINGRELAY 1111-4871

L18

PLATFORM

A

E

E

+

F/C SOL(PROP.)

137-6464

R

L19

U

HYDLOCK SOL121-1491

L15

L38

L15

TO ATCH SPEAKER(L)FOR OUTSIDE JAPAN

+BL. CHASSISL. BOOM

306-GN-18

WASHW. LOWW. INTGND

GNDLIGHTRS485-+BMAINRS485+

GND INWASH SW+24 INMOT WASHERWIPER SWOUTPUTSINTER SWWIND SW

TO ATCH SPEAKER(R)FOR OUTSIDE JAPAN

961-

BR

-18

200-BK-18

506-PU

200-BK

L3L19

954-GN-18

L975-PK-18

AB

K997-BU-18

326-RD

L20

L19

L3

L21

L20L19L3

L18

L3

L18

200-BK-18

AB

B

326-RD

L13

L13L12L11

L9

L9 L8

E

K997-BU-18

L16

K905-RD-18K905-RD-18

L14

L1

A

E

L1

SW INPUT

NOTE G : USE WITH A/C UNIT

B

L2

A

L1

WINDSHIELD SW9G-2795 (NOTE E)

K90

5-R

D-1

8

L20

AB

ATCHBOOM LAMP 5I-8250

K90

5-R

D-1

4

L4

L

CHASSIS

OPERATOR STATION

S4S3S2S1

COM

G (NOTE B)

AB 125-4873 A-2L

ATCHREFUELING PUMP123-3928

ATCHREFUELINGSTART SW(NO) 6T-9442

T

R

R

HORN 7Y-3919

R

G (NOTE B)KK

+ -

1 2

ATCHREFUELINGRELAY 2111-4871

H

R

MONITOR106-0172

SWITCH PANEL111-4800

KEY SW 9G-7641

H

TT

ATCHREFUELINGSTOP SW(NC) 9X-4184

L2

A/C PHOTOSENSOR128-2162(NOTE G)

L3

ATCH AUX CKT

200-

BK

-

L2

UU 111-4826 F-11

A

200-

BK

-18

B200-BK

118-YL

SERVICEMETER6T-7337

CHASSISLAMP 5I-8251

326-RD

THROTTLEPOS SW 106-0107

ATCHBOOM LAMP 5I-8250

524-BU

EE

E

R

CSB

E

524-BU

OFF

C

ONST

L970-GY-18

CIGARLIGHTER9W-0335

12

21

HORN 7Y-3920

E97638

THIS SCHEMATIC IS FOR THE 320B-HYD EXCAVATOR. (116-0212 V 01)

UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 Gauge.

LIGHT IN 24V

LIGHT OUT 12V

CONN 8

CONN 3

CONN 4

CONN 7

CONN 6

CONN 5

CONN 46

CONN 2

CONN 1

CONN 9

CONN 11CONN 10

CONN 17

CONN 14

CONN 16 CONN 20

CONN 19

CONN 18

CONN 15

CONN 32CONN 33 CONN 34

CONN 24CONN 23CONN 22CONN 21

CONN 44

CONN 45CONN 40CONN 39CONN 38CONN 37CONN 36CONN 35

CONN 13CONN 25 CONN 26 CONN 27 CONN 28

CONN 12

CONN 29 CONN 41

CONN 42 CONN 43

CONN 31CONN 30

A

B

C

D

E

F

I

H

G

A

B

C

D

E

F

I

H

G

101112 9 8 7 6 5 4 3 2 1

101112 9 8 7 6 5 4 3 2 1

STARTING CIRCUIT.

GAUGE CIRCUIT.

MONITOR CIRCUIT. (EMS)

WASHER/WIPER CIRCUIT.

HEATER AND AIR CONDITIONER CIRCUIT.

GROUND CIRCUIT.

OPERATOR INTERLOCK CIRCUIT.

ENGINE SHUTDOWN CONTROL CIRCUIT.

START AID CIRCUIT.

ALL DASHED LINES ARE ATTACHMENTS.

WIRES THAT HAVE BATTERY VOLTAGEWHEN THE KEY SWITCH IS OFF.

WIRES THAT HAVE BATTERY VOLTAGEWHEN THE KEY SWITCH IS ON.