10

SENR8939
5
4 11 September 1995
9

18 22 31
1
9 12 Off Machine Switch Specification
6 C 7
32 2
5
27
4
5
Part No. Function Actuate Deactuate Contact Position
16 21
31 27 7 7
15 30 33 490 ± 49 kPaMAX 290 kPa MIN
35 29 10 4 4I-5387 Front Linkage Pressure Normally Open
4
15 11 6 20 6 8 9 (71.0± 7.1 psi) (42.0 psi MIN)
20 4 13
2 16 34 32 10
3 23 19 B A 2
14 33 12 18 5 93.0 ± 20.8 kPa 68.9 ± 20.8kPa 1-3 Normally Closed
24 9 6 6T-1546 Engine Oil Pressure
23 2 (13.5 ± 3.0 psi) (10.0 ± 3.0 psi) 1-2 Normally Open
1
22
1 37.8 ± 2.8°C 26.7°C MIN
8N-1693 Engine Coolant Temp (Start Aid) Normally Closed
4 (100 ± 5°F) (80.0°F MIN)
13
E
28 9 3 35 36
21 28 26 30
2 36 37
5 24
2 11 29

3 37
1 6 34
17
6 10 9
3 19
7 D 17
14 11
1 7 4
5
8 8 10
1 25
10
8

Resistor, Sender and Solenoid Specifications

Part No. Component Description Resistance (Ohms)¹
13 102-8014 Resistor - Eng/Pump Sol. Valve 58 ± 2.9

5080 Excavator 102-0347

110-6465
Solenoid - A/C Compressor Clutch

Solenoid - Engine Shutdown

14.4 ± 0.6

5.12 ± 0.26

Electrical System 7T-9746

9G-4365
Solenoid - Bypass

Solenoid - Start Aid

33.6

6.0
¹ At room temperature unless otherwise noted.

15 27
8SL1-UP
7 3
23 9
6
16
3
15

35 34 37 32 29 C
22
1 24 23 20 38 12 34
1 6 33 D
22 2 14 24 16 13
17 36
37 30 B A
2 E 5
4
5 18 8
21
28 9 3
31
35 18
7
10
25 13 Related Electrical Service Manuals
28 26 30 14
4 33
3 4 11 29
4 19
36
31 1 21
17
20
Title Form Number
32 2 5 4 27 10 7 10 Alternator (5S-9088):
1 RENR1252
19 11 6 Consist No. 3E-7578 (26Sl)
2 Consist No. 9G-9538 (N3) SENR2082
Consist No. 6T-7223 SENR4130
Alternator (3E-7577):
Consist No. 3E-7577 (26SI) RENR1252
Engine And Pump Electronic Control SENR6155
Starting Motor (6V-5539):
Consist No. 6V-5540 (KE) SENR3536

Machine Harness Connector and Component Locations Consist No. 6V-5582 (F8)
Consist No. 106-8554 (42MT)
SENR4975
SENR3581

© 1995 Caterpillar Printed in U.S.A.

All Rights Reserved

Harness And Wire Electrical Schematic Symbols

Harness Connector Location A AA 1 1

Connectors
Machine
Location
Harness And/Or
Components
Schematic
Location
Connectors
Machine
Location
Harness And/Or
Components
Schematic
Location Electrical Schematic Symbols And Definitions 1 2 2
V - 123-8309 C -114-3096
CONN3
1 F-8
CONN31
13 C-12 Component Location Typical representation of a Typical representation of a
B - 123-8311 Engine Oil Pressure Switch
CONN1 A - 123-8310
3 Contacts
CONN29 Eng. Coolant Temperature Schematic Machine Schematic Machine Deutsch connector. The Sure-Seal connector. The
Component Component Receptacle
* Control
A-8 14 Sensor
E-11
Location Location Location Location Plug plug contains all sockets plugand receptacle contain
2 40 Contacts
4 6
1 2 CONN52 A - 123-8310
B-3
CONN75
7
A - 123-8310
B-2
Actuator - Governor A-12 1 Relay - Washer B-5 4D and the receptacle contains both pins and sockets.
1 D D - 123-8313 D -123-8313
3 CONN71 A - 123-8310 CONN76 D - 123-8313
Alarm - Action D-2 1A Relay - Wiper B-6 4D 2 all pins.
5 31 E-9 17 A-2
V - 123-8309 T - 123-8316 Alarm - Travel B-10 9E Resistor F-6 1C
T
CONN2 A- 123-8310 CONN41 A - 123-8310
24 Contacts B-8 D-10 Alternator E-12 2 Seat Heater F-4 3D
* Control 5 E Bypass 1 Solenoid
Pressure Temperature Level Flow Pin or Socket
CONN4 Y - 123-8309 CONN47 A - 123-8310 Antenna D-8 3 Sender - Hydraulic Oil Temperature A-10 19
2 B - 123-8311
E-8 10 E Bypass 2 Solenoid
C-10 Symbol Symbol Symbol Symbol Number
Battery A-2, F-11 4 Sensor - Engine Coolant Temperature E-11 16
1 CONN33 A - 123-8310 CONN38 A - 123-8310
3 B-12 12 E E-10
C - 114-3096 Fuel Level Sensor Block - Terminal B-4, C-4 1D Sensor - Engine Speed D-11 17
CONN12 B - 123-8311 CONN55 A - 123-8310 Wire, Cable, or Harness Component
E-4 B-2 Breaker - Alternator C-4 2D Sensor - Fuel Level E-10 18 Assembly Identification
4 G - 114-4253 17 Grease Pump Part Number
CONN15 B - 123-8311 CONN43 A - 123-8310 Control - Engine Pump B-8 5 Solenoid - Air Conditioner Compress Clutch F-12 20
10 Contacts
1 A K - 6C-9031
D-5 4 E Front Linkage Switch
D-10 Single Wire
CONN7 B - 123-8311 CONN46 A - 123-8310 Control - Engine Shutdown A-4 7D Solenoid - Bucket Close C-8 36
Connector
4 5 F-6 1 E D-10
N - 129-8076 Eng/Pump Solenoid
CONN8 B - 123-8311 CONN26 A - 123-8310
Control - Operator L.H. F-4 3C Solenoid - Bucket Open C-8 35 Normally open switch that will close with an increase of a specific condition (temp-press-etc.). C A A AA 9X-1123
6 E-6 F-12
W - 102-7941 18 Start Aid Solenoid Control - Operator RH. E-4 3B Solenoid - Bypass 1 D-10 4E 325-PK-14 1 325-PK-14
CONN72 A - 123-8310 CONN40 A - 123-8310
E-9 E-10 Conditioner - Air E-7 29 Solenoid - Bypass 2 C-10 8E
32 Y - 123-8309 8 E Swing Power Solenoid
CONN53 A - 123-8310 CONN39 A - 123-8310 Fuse - Block B-5, 6 3D Solenoid - Engine/Pump D-10 1E Normally open switch that is closed due to an applied condition, and will open again with a Pin Socket Wire
7 Contacts 7 Engine Shutdown Control
A-4 9 E Swing Pressure Switch
E-10
specific decrease in that condition. Color
Horn F-1 7 Solenoid - Engine Shutdown E-11 21
CONN85 A - 123-8310 CONN48 A - 123-8310
35 F-11 11 E B-10 Lamp - Cab D-1, F-1 9 Solenoid - Start Aid F-12 22
SS - 121-7164 Travel Alarm
6 Contacts
CONN70 A - 123-8310 CONN42 A - 123-8310 Lamp - Chassis C-1, F-1 10 Solenoid - Swing Power E-10 6E
13 E Auto Lubrication Pump
A-7 6 E Travel Pressure Switch
D-10 2 200-BK-14
Lamp - Dome D-4 5A Solenoid - Travel Speed D-10 2E
CONN37 A - 123-8310
A-12 2 Contacts
CONN45 A - 123-8310
D-10 Normally closed switch that will open with an increase of a specific condition.
8 Governor Actuator 2 E Travel Speed Solenoid Lighter - Cigar D-4 2A Switch - Backup Accel E-5 4B
CONN80 B -123-8311
D-7
CONN84 B - 123-8311
D-6
Circuit Number Wire
11 3 A Meter - Service D-4 3A Switch - Disconnect A-2 25
Conditioner Group E - 123-8308 Identification Gauge
CONN18 G - 1144253 CONN44 N - 129-8076 Monitor D-2 4A Switch - Engine Oil Pressure C-11 26
D-4 F-4
5 Contacts
2 B Throttle Position Switch 2 C Seat Heater
Motor - Starter C-12 11 Switch - Front Linkage D-10 10E
Normally closed switch that is open due to an applied condition, and will close again
CONN32 A - 123-8310 CONN24 H - 7Y-8290
9 C - 114-3096
B-12 20 Z - 7Y-5504
F-1 with a specific decrease in that condition.
Motor - Washer E-10 12 Switch - Fuel Level F-10 32
4 3 CONN51 A - 123-8310 CONN27 Air Cond. Compress Clutch Electrical Schematic Symbols And Definitions
A-8 22 F-12 Motor - Lower Wiper D-2 13 Switch - Governor Backup E-6 2B
10 S - 7Y-8226 Sol.
CONN14 8 - 123-8311
D-5
CONN28 C - 114-3096
F-11
Motor - Upper Wiper D-2 9 Switch - Neutral Start F-2 27
2 A E - 123-8308 23 Refrigerant Pressure Switch
Pump - Refueling F-10 33 Switch - Pump Backup F-5 2C The circle indicates that the component has screw terminals and a wire can be disconnected FUSE - A component in an electrical circuit that will open the circuit if too much current flows
CONN16 B - 123-8311 CONN30 C - 114-3096
3 A K - 6C-9031
D-4 24 Engine Speed Sensor
D-12 from it. through it.
Radio D-8 15 Switch - Refrigerant Pressure E-11 24
CONN23 E - 123-8308 CONN17 G - 114-4253
D-8 E-4 Relay - Bucket Close A-5 4D Switch - Refueling Pump Start F-11 31
4 A Radio 1 B Start Aid Switch REED SWITCH - A switch whose contacts are controlled by a magnet. A magnet closes the
CONN20 K - 6C-9031 CONN62 K - 6C-9031 Relay - Bucket Open A-5 4D Switch - Refueling Pump Stop F-10 31 contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch.
5 A D-3 D-2
Monitor 8 A Action Alarm
CONN88 E - 123-8308 CONN81 K - 6C-9031
Relay - Cab Lamp A-6 4D Switch - Seat Heater F-4 4C No circle indicates that the wire cannot be disconnected from the component.
E-3 D-2
* Top Wiper Motor 1 A E - 123-8308 Relay - Chassis Lamp A-6 4D Switch - Key Start D-4 5B
4 Contacts
CONN82 R-6C-9177 CONN5 N - 129-8076
E-2 3 C F-5 Relay - Headlamp A-5 4D Switch - Start Aid D-3 6B SENDER - A component that is used with a temperature or pressure gauge. The sender
* Bottom Wiper Motor Seat Heater Switch
2 CONN89 E - 123-8308 CONN66 Refueling Pump Start Switch Relay - Horn B-5 4D Switch - Start Aid Coolant Temperature D-1 28 measures the temperature or pressure. Its resistance changes to give an indication to the
E-3 F-11
1 A R-6C-9177 35 (NO.)
Relay - Main C-4 5D Switch - Swing Pressure E-10 7E T gauge of the temperature or pressure.
CONN83 8 - 123-8311 CONN86 Refueling Pump Stop Switch
F-4 F-10
21 J - 114-4256 35 (N.C.) Relay - Refueling Pump A-6 4D Switch - Throttle Position D-4 1B This indicates that the component has a wire connected to it that is connected to ground.
CONN74 N - 129-8076 CONN67 SS - 121-7164 Relay - Refueling Pump (Atch) A-2 34 Switch - Travel Pressure D-10 5E
F-5 F-10
5 C Auto Lubrication Switch 34 Refueling Pump Motor RELAY (Magnetic Switch) - A relay is an electrical component that is activated by electricity.
A - 123-8310 G - 114-4253 Relay - Start B-4 6D Switch - Windshield D-2 6A
CONN68
36 C-9
CONN60
4 B E-4 It has a coil that makes an electromagnet when current flows through it. The electromagnet
Bucket Open Solenoid Low Idle Switch
Machine locations are repeated for components located close together. can open or close the switch part of the relay.
CONN69 A - 123-8310 CONN61 J - 114-4256
2 Contacts C-9 F-3 A = Components in cab.
2
37 Bucket Close Solenoid
BulletTerminal
2 C Horn Switch This indicates that the component does not have a wire connected to ground. It is grounded
CONN73 B - 123-8311 CONN64 J - 114-4256 B = Components in operators right hand console.
1
33 Z - 123-8309
F-2
1 C Bucket Close Switch
F-3 by being fastened to the machine. CIRCUIT BREAKER (C/B) - A component in an electrical circuit that will open the circuit if too
7 C = Components in operators left hand console.
5
CONN34
28
A - 123-8310
B-12
CONN65
3 B
G - 114-4253
E-4 much current flows through it. This does not destroy the circuit breaker and it can be reset to
C-114-3096 Bucket Open Switch D = Components in relay panel.
CONN35 A - 123-8310
become part of the circuit again.
1 Contacts B-12 E = Components near main control valve.
29 C - 114-3096
CONN36 A - 123-8310
6 30 C - 114-3096
B-12 SOLENOID - A solenoid is an electrical component that is activated by electricity. It has a coil
A = Connector in cab. that makes an electromagnet when current flows through it. The electromagnet can open or
B = Connector in operator’s R.H. console. close a valve or move a piece of metal that can do work.
1 1 1 C = Connector in operator’s L.H. console.
D = Connector in relay panel.
E = Connector near main control valve. MAGNETIC LATCH SOLENOID - A magnetic latch solenoid is an electrical component that is
* Connector is located at the component. 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.
 12 11 10 9 8 7 6 5 4 3 2 1

OPERATOR STATION OPERATOR STATION OPERATOR STATION

BK-00 BK-00 A447-PK

A 200-BK ATCH-SEAT ATCH-SEAT J H
START AID PS VALVE HORN SW
BK-18 2 310-PU 310-PU 200-BK-14 N N 200-BK HEATER HEATER SW GN 200-BK HORN
SOL NN NN FF BACKUP N 121-6959 7X-6386 NEUTRAL 7T-0969
BK-18 1 311-WH 200-BK-14 RESISTOR A770-PK 439-YL 322-GY
9G-4365 3T-4405 START SW
403-GN 200-BK 102-8014 YL
CONN 26 L2 L2 CHASSIS CAB RISER FF 2 1 9W-2150
521-YL-14 200-BK A768-BU CONN 74
3

1
3
4
2
A763-GY-14 PLATFORM 200-BK 235-BK-14 BU
4 N B B
B751-YL-14 200-BK 235-BK
ATCH REFUELING PUMP ATCH REFUELING PUMP 5
326-PU 235-BK B N A769-GY GY 307-OR
GG HH JJ CONN 71 CONN 3 6 PROVISION BUCKET CLOSE RH-SW

RD
START SW (NORMALY OPEN) START SW (NORMALY CLOSED) 235-BK-14 201-BK 439-YL 439-YL

BK
308-YL 5 N J
AUTO-LUB

A540-WH
BK-00 119-8311 117-4557 306-GN A Y Y B 235-BK 201-BK A447-PK 8 A447-PK 306-GN

320-OR
SW

200-BK
140-BU
322-GY 1 103-YL 1 103-YL 235-BK 200-BK-14 235-BK 3 235-BK A770-PK BOLT X 322-GY H
LH-SW E
CONN 44 CONN 5 BK CAB LAMP HORN

2
2
1
320-OR 2 A756-BU 2 A756-BU 201-BK 200-BK-14 A768-BU 4 P P 322-GY

325-PK
365-YL
A763-GY-14
B751-YL-14
F BATTERY N N 615-YL 5I-8250 7T-0970 F

B957-GN
POSNEG POS NEG 105-BR 3 A755-PK 3 A755-PK 201-BK 200-BK A769-GY 1 200-BK

521-YL-14

168-GN
9X-9731 MOTOR 185-YL-14 4 A539-BU 4 A539-BU 200-BK B730-OR 6 B730-OR J RD M M 200-BK

403-GN
311-WH
SS

RD-00
A/C CLUTCH

BK-00
CONN 83

1
4
2
3
129-BU 5 A540-WH 5 A540-WH 200-BK 185-YL-14 2 185-YL-14 B
102-0347 323-WH-14 1 103-YL 6 A757-GY 6 A757-GY 200-BK B731-WH 7 B731-WH CONT. GP LH
200-BK-14 2 124-GN-14 7 A769-GY 7 A769-GY 200-BK 10 200-BK A537-PK 200-BK 113-2531
COLD WEATHER CONN 66 ATCH 8 A768-BU 8 A768-BU 124-GN 124-GN 124-GN CHASSIS
CONN 67 120-YL 9
CONN 86 REFUELING 500-BR 9 B730-OR 9 B730-OR PLATFORM A539-BU CONN 7

1
2
GN
GN

SS PUMP 10 140-BU 10 140-BU A540-WH PLATFORM

1
2
SS 501-GN 320-OR
SS 102-6168 615-YL-14 11 B731-WH 11 B731-WH A540-WH 307-OR B Z Z H H

L13
325-PK CHASSIS
113-OR 12 D777-PU 12 A756-BU 140-BU 306-GN 322-GY 1 322-GY 1 200-BK-14
CONN 27 LAMP
2
1

607-PK-14 13 320-OR 13 320-OR A755-PK 306-GN 322-GY 607-PK-14 2 607-PK-14 2 607-PK-14

B957-GN

323-WH
L16 L16

200-BK
5I-8250

168-GN
C

365-YL
629-PK-14 14 146-GY 14 A757-GY 607-PK-14 607-PK-14 CONN 73
ATCH CONN 24
535-BU 15 306-GN 15 306-GN A763-GY-14 322-GY
REFRIG FUEL 118-GY 16 120-YL 16 120-YL B751-YL-14 CONN 82 G
PRESS SW SS LEVEL SW 410-WH 17 322-GY 17 322-GY B789-BR-14 B G GN
C 114-5334 5C-6108 B789-BR-14 18 129-BU 18 129-BU B739-WH-14 105-BR 1 B786-BU
CONN 85

1
2
3
4
5
6
513-OR-14 2 BK B739-WH-14 19 403-GN 19 403-GN B790-OR-14 310-PU 4 YL CAB LAMP
A 200-BK
521-YL-14 1 BK B790-OR-14 20 B955-YL 20 B955-YL B740-OR-14 308-YL 2 G ONE TOUCH 5I-8250
140-BU

168-GN

323-WH
365-YL
B957-GN

200-BK
21 B956-PK 21 B956-PK 326-PU 3 LOW IDLE SW L X (ATCH)
CONN 28 B740-OR-14 A769-GY A539-BU
B955-YL 22 113-OR 22 113-OR A768-BU A755-PK
ATCH H
B956-PK 23 410-WH 23 410-WH B730-OR A756-BU MOTOR
ALTERNATOR 24 501-GN 24 501-GN B731-WH A757-GY RD CONN 89 CONN 82
L11 L11 B786-BU BOTTOM
3E-7577 B730-OR 25 535-BU 25 535-BU 320-OR A758-BR 501-GN 1 501-GN 1 WIPER
B731-WH 26 500-BR 26 500-BR 306-GN 235-BK BK 4 4 6C-8438
ALTERNATOR A G BUCKET OPEN LH-SW 3 3
COOLANT A758-BR 27 118-GY 27 118-GY 607-PK-14 B786-BU 535-BU 535-BU T¡
5S-9088 TEMP 200-BK MOTOR WASHER 200-BK 2 200-BK 2
MOTOR A757-GY 28 105-BR 28 105-BR 322-GY 200-BK

A758-BR

A756-BU
C 3E-5370

A755-PK
A757-GY
A756-BU 29 B786-BU 29 B786-BU 129-BU A539-BU E R R

326-PU

307-OR
310-PU

235-BK

105-BR
7T-8890

308-YL
ALT 113-OR A OR +B A755-PK 30 310-PU 30 310-PU 403-GN 140-BU L
506-PU GY
+ R 403-GN 492-GY C YL SIGNAL A768-BU 31 326-PU 31 326-PU B955-YL 1 RH-SW
201-BK B BK GROUND A769-GY 32 308-YL 32 308-YL B956-PK 200-BK 4 B H
A FUEL BU E MOTOR
A539-BU 33 A758-BR 33 A758-BR 113-OR 185-YL-14 2

615-YL
CONN 29 LEVEL L14 L14 CONN 12 TOP

9
8
7
6
5
3
2
1
4
10
201-BK 2 BK A540-WH 34 A763-GY-14 34 A763-GY-14 410-WH 235-BK-14 3 501-GN 1
SENSOR CONT. GP RH WIPER
200-BK-4 495-GN 1 YL 140-BU 35 B751-YL-14 35 B751-YL-14 501-GN B740-OR-14 5 B789-BR-14 4
C 105-9993 BACKUP G 113-2531 6C-9102
CONN 87 439-YL 36 B789-BR-14 36 B789-BR-14 535-BU B790-OR-14 10 B739-WH-14 535-BU 3 T¡
109-OR-4 A447-PK 37 B739-WH-14 37 B739-WH-14 500-BR B739-WH-14 ACCEL 200-BK 2

495-GN
E 8 B790-OR-14 E

506-PU
327-PK ENGINE 38 B790-OR-14 38 B790-OR-14 118-GY B789-BR-14 9 B740-OR-14 7N-8008
SHUTDOWN W W CONN 88
200-BK 39 B740-OR-14 39 B740-OR-14 105-BR A763-GY-14 7
110-6465 40 185-YL-14 40 185-YL-14 B786-BU B751-YL-14 6 B790-OR
2 3 2 3
310-PU B W A763-GY-14 185-YL-14
1 1 200-BK
1 521-YL-14 1 521-YL-14 326-PU 629-PK CONN 8 L17
6 6 200-BK

L10
2 B734-GY 2 308-YL 403-GN
5 5

A758-BR

A756-BU
A755-PK
A757-GY
A 3 124-GN-14 3 124-GN-14 CONDITIONER GP A758-BR 201-BK B751-YL-14 235-BK-14 615-YL

326-PU

235-BK
307-OR
105-BR

310-PU
308-YL
SWING 107-1994 4 4 ATCH
200-BK 1 4 615-YL-14 4 615-YL-14 185-YL-14 129-BU W W
A771-PU SW 5 607-PK-14 5 607-PK-14 185-YL-14 START AID
2 200-BK
4I-5387 6 629-PK-14 6 629-PK-14 521-YL-14 GOVERNOR SW
CONN 39 201-BK B790-OR
7 7 629-PK BACKUP SW KEY START 7X-6387
B955-YL B789-BR
8 B738-BR 8 124-GN-14 B956-PK 3T-4405 SW
A 9 439-YL 9 439-YL 124-GN 113-OR 9G-7641 G G
521-YL-14
109-OR-4
200-BK-4

B783-OR 2 SWING 10 A447-PK 10 A447-PK 120-YL 410-WH 308-YL 310-PU 2 RD

403-GN

492-GY
200-BK

200-BK
113-OR

R
327-PK
201-BK

142-BU 1 POWER 615-YL-14 118-GY 308-YL 308-YL 1 BK

6I-6826 A Y Y B 103-YL 501-GN CONN 17
CONN 40 OFF C
CONN 72 439-YL 535-BU 326-PU
A CONN 4 ON S THROTTLE
A447-PK 500-BR ST B 307-OR
B733-YL 2 GN BYPASS 1 140-BU 120-YL 105-BR POSITION
172-GN 1 GN 7T-9746 140-BU SW
7Y-5465

2
5
3
4
1
CONN 80 615-YL-14
CONN 41 G
B 200-BK-14
C C A 235-BK 1 BK COM

629-PK-14

200-BK-14
615-YL-14
COOLANT TRAVEL PRESS A755-PK 2 PK S1

B956-PK
103-YL

124-GN-14
200-BK 1

B955-YL
200-BK-14

403-GN
410-WH

200-BK
129-BU
500-BR
535-BU
501-GN

113-OR
118-GY

201-BK
201-BK
TEMP SW

103-YL
615-YL

103-YL
120-YL
521-YL
311-WH B737-GN 2 521-YL-14 A756-BU 3 BU S2
START AID 4I-5387 124-GN-14 SERVICE A757-GY 4 GN S3
T¡ CONN 42 AERIAL
8N-1693 200-BK-14 B B B B METER A758-BR 5 BR S4
ANTENNA
200-BK 8E-1118 CONN 84 6T-7337 CONN 18 K
A

9
8
7
5
6
2
4
3
1
10
1
2
4
3
CONN 16 201-BK 113-OR 1 +BATTERY

1
4

3
2
FRONT CONN 14 + -
200-BK 1 L21 L21 B955-YL 201-BK 2 GROUND MONITOR
LINKAGE U E K K
B749-GN 2 B956-PK B955-YL 3 DATA + 102-7891
SW 135-BU TO RADIO 113-OR B956-PK 4
CONN 43 403-GN DATA -
C 4I-5387 210-BK CONN 23 K CAB
ENGINE CONN 15 201-BK CONN 80
788-YL 2 WH-18 U CIGAR
129-BU 129-BU
D A762-PU 1 BK-18
SPEED A 4 103-YL 122-YL 200-BK LIGHTER K CAB LAMP D
3E-7886 L22 L22 200-BK E 615-YL 5I-8250
763-BU 2 TRAVEL 3 615-YL 103-YL 9W-0335 113-OR 1 ACTION ALARM

L15
CONN 30 SPEED L15 P P
172-GN 1 200-BK 2 200-BK 615-YL 410-WH 2 9G-9813
7I-1245 1 200-BK BOLT
CONN 45 122-BU 122-BU CONN 62
E K K
WINDSHIELD
CHASSIS A CONVERTER GP SW 9G-2795
A768-BU 1 ENG / PUMP U 14-7143 118-GY
A769-GY 2 5I-8368 535-BU K E
1
521-YL-14

RD-18 IGN (+24)

109-OR-4
200-BK-4

DOME LAMP
A762-PU

535-BU 1 535-BU
403-GN

CONN 46
492-GY

405-GY
311-WH

IN (+24)
200-BK
200-BK

200-BK
113-OR

2 BK-18
788-YL
327-PK

201-BK

201-BK

GD CAB 6C-9121

200-BK
200-BK
501-GN 501-GN 2 501-GN

615-YL
A769-GY
B783-OR

A768-BU
B749-GN
B737-GN
A771-PU

B733-YL

2 BK-18 GND (COM) CONN 81

1 OR-18 OUT (+12)
3 PK-18 MEM (+12)
U L17 L17

OPERATOR STATION OPERATOR STATION OPERATOR STATION

L28

L10
L11

ABBREV COLOR
L9

L4

C RD RED
3 BU-18 ENG OIL A WH WHITE
201-BK 2 RD-18 SW 200-BK 200-BK 2 BUCKET OR ORANGE
405-GY 1 BK-18 6T-1546 585-YL 1 OPEN YL YELLOW
4I-6158 L27 PK PINK
CONN 31 CONN 68
BK BLACK
A L1 L1 GY GRAY
STARTER 200-BK 2 BUCKET PU PURPLE
6V5539 586-BR 1 CLOSE RELAY BOX BR BROWN
A 4I-6158 GN GREEN
G S BYPASS 2 CONN 69 WIRES THAT HAVE BATTERY VOLTAGE
RD-00 172-GN 1 GN FUSE & RELAY PANEL 200-BK 200-BK WHEN THE KEY SWITCH IS OFF. BU BLUE
L13
200-BK-4

GG A754-GY 2 GN 7T-9746 200-BK

200-BK
200-BK

MTRBAT RD-00 B957-GN 101-RD-14 308-YL

CONN 47 WIRES THAT HAVE BATTERY VOLTAGE
L9

AA 168-GN 168-GN-14 REFUELING 185-YL-14 112-PU-14

L28 323-WH-14 142-BU 112-PU-14 304-WH-8 WHEN THE KEY SWITCH IS ON.
MOTOR L28 L27 SYMBOL DESCRIPTION
365-YL 120-YL 112-PU-14 109-OR-4 101-RD-4
C 172-GN 172-GN 129-BU 112-PU-12 109-OR-4 STARTING CIRCUIT. BLADE, SPADE, RING, C
L3 L3
A763-GY-14

CHASSIS MAIN RELAY

B751-YL-14

142-BU 142-BU 113-OR 112-PU-12 1 308-YL OR SCREW TERMINAL

521-YL-14

B783-OR

A754-GY

3T-0376
B749-GN
B737-GN

A768-BU
A771-PU

B733-YL

585-YL 172-GN 101-RD-14 2 184-BU-14 GAUGE CIRCUIT.

403-GN
311-WH
304-WH-8

763-BU
200-BK
235-BK
201-BK

CIRCUIT CONNECTED
101-RD-4

586-BR 112-PU-14 101-RD-14 3 103-YL

112-PU-14 4 124-GN-14
L4 L5 L1 WIPER/WASHER CIRCUIT.
629-PK-14 184-BU-14 7 A540-WH CIRCUIT NOT CONNECTED
L29
140-BU 140-BU 101-RD-14 8 113-OR
L6 SS HEATER AND AIR CONDITIONER CIRCUIT.
BK-00

A539-BU 103-YL 101-RD-14 101-RD-14 9 172-GN ELECTRICAL CONNECTION

A540-WH 121-YL LL 10 120-YL TO VEHICLE STRUCTURE

185-YL-14
L7 L7 GROUND CIRCUIT.
607-PK-14 118-GY MM 11 105-BR

172-GN
142-BU
113-OR

129-BU
INTERNAL ELECTRICAL

120-YL
113-OR 101-RD-14 101-RD-4 12 121-YL
L8 L5 80 CONNECTION TO SURFACE
EE 535-BU 112-PU-14 13 118-GY ENGINE SHUTDOWN CONTROL CIRCUIT. OF COMPONENT
118-GY BLOCK AS. ALT 14 185-YL-14
TRAVEL 9G-8451 BREAKER KK CONNECTOR
201-BK 304-WH-8
9S-4693
17 142-BU START AID CIRCUIT.

SOLENOID
CHASSIS CONN 32 ALARM 109-OR-4 18 129-BU

MONITOR
L29 ATCH WIRE, CABLE,

BACKUP
C A 3T-1444 CONN 48 439-YL CONN 2 A 101-RD-4 FUSE HEATER 124-GN-14 20 506-PU ENGINE/PUMP CONTROL CIRCUIT.

184-BU-14

112-PU-14
101-RD-14
112-PU-14
112-PU-14
SWING
COMPONENT

RADIO
L1

CIGAR
200-BK 3 200-BK A A447-PK OPTION SENSOR 16 327-PK 10A 9W-1442 SHUTDOWN 107-WH 109-OR-4 21 A983-BU

140-BU
118-GY

103-YL
L4

121-YL
311-WH 4 311-WH BK/PK-14 1 121-YL A768-BU OPTION SW 1 9 326-PU 15A 9W-1441 KEY 105-BR 200-BK 109-OR-4 L19 22 535-BU L# CIRCUIT GROUPING
A762-PU 1 521-YL-14 BK-14 2 321-BR A769-GY OPTION SW 2 24 306-GN 20A 9W-1446 112-PU-14 109-OR-8 23 500-BR ALL DASHED LINES ARE ATTACHMENTS. DESIGNATION
327-PK 2 201-BK A539-BU ENG OIL LEVEL SW 4 322-GY 10A 112-PU-14 D 24 792-OR
495-GN A540-WH HYD OIL LEVEL SW 11 320-OR 15A HORN 10A 10A 101-RD-14 112-PU-14 BLOCK AS. 200-BK 26 585-YL
L10 COOLANT LEVEL SW 5 DOME LAMP 9G-8451 START 27
CONN 33 B751-YL-14 506-PU 140-BU 105-BR 10A 10A 20A 112-PU-12 306-GN 501-GN
201-BK C A A763-GY-14 439-YL 185-YL-14 ATCH PRESS. SW 20 121-YL 10A CONTROL 15A 20A 112-PU-12 112-PU-12 RELAY 28 322-GY IDENT PART NO. LOC
201-BK 8 235-BK A447-PK 327-PK HEAVY LIFT SOL 1 8 129-BU 10A TR ALARM 10A 20A 101-RD-14 9X-8124 29 320-OR
6 403-GN A539-BU 304-WH-8 WORK MODE 1 SOL 7 615-YL-14 10A WIPER 10A 20A 112-PU-12 101-RD-14 304-WH-8 109-OR-8 30 615-YL-14
521-YL-14 7 A540-WH 109-OR-4 FUEL LEVEL 22 495-GN 124-GN-14 10A GREASE 10A 20A 101-RD-14 184-BU-14 D D 32 791-PK HARNESS AS.
788-YL 1 403-GN 140-BU 101-RD-4 HYD OIL TEMP 10 491-PK 120-YL 140-BU BUCKET SS SS 103-YL BLOCK AS. 35 A539-BU
405-GY 2 405-GY A768-BU 121-YL TRAVEL ALARM 14 321-BR 185-YL-14 114-GN 124-GN-14 9G-8451 36 586-BR A 123-8310 F-9
113-OR 3 492-GY A769-GY 506-PU ALTERNATOR 3 403-GN 500-BR 115-PK-14 CHASSIS LAMP 38 200-BK B 123-8311 F-8
L8 C
403-GN 4 788-YL 326-PU 607-PK-14 ENGINE OIL PR 18 405-GY 501-GN 117-YL-14 HP LAMP 140-BU 308-YL 39 306-GN 114-1954 B-12
492-GY 5 113-OR 308-YL 535-BU ENGINE COOL TEMP 23 492-GY 506-PU 116-BR-14 HP LAMP 500-BR 172-GN 200-BK 31 607-PK-14 A D 123-8313 B-3

FUSE & RELAY PANEL

9 A762-PU 306-GN 118-GY ENGINE SPEED + 6 788-YL 308-YL 500-BR 792-OR 120-YL 306-GN 40 107-WH 607-PK-14 CHASSIS E 119-4410 E-3
10 327-PK 322-GY 326-PU ENGINE SPEED - 12 A762-PU 103-YL 792-OR 501-GN 107-WH 304-WH-8 19 140-BU 200-BK-14 LAMP G 114-4253 E-4
320-OR 308-YL GOV POSITION 21 A761-PU 103-YL 501-GN 506-PU 506-PU 105-BR 109-OR-4 365-YL 5 365-YL 5I-8250 H 7Y-8290 F-1
L5
B CONN 34 105-BR 306-GN BYPASS SOL 1 2 B733-YL 308-YL A983-BU A983-BU 121-YL 101-RD-4 323-WH 15 323-WH J 114-4256 F-4 B
C A 185-YL-14 322-GY FRONT LINK PR SW 15 B749-GN 184-BU-14 535-BU 535-BU 118-GY 184-BU-14 16 A K 6C-9031 D-5
L30 M 117-7029 D-1 NOTE B
109-OR-4 109-OR-4 129-BU 320-OR TRAVEL PR SW 19 B737-GN 791-PK 322-GY 185-YL-14 103-YL 25
L7 140-BU 1 PROVISION N 114-4257 F-5
C A CONN 35 103-YL 105-BR SWG BRK PR SW 17 A771-PU A983-BU 320-OR 142-BU 124-GN-14 33

115-PK-14
200-BK 2 GREASE PUMP P 123-8284 F-2 NOTE D
304-WH-8 304-WH-8 124-GN-14 129-BU TRAVEL SPD SOL 1 763-BU 792-OR 129-BU 629-PK-14 34

306-GN
107-WH

326-PU

200-BK
327-PK
140-BU
114-GN
120-YL 103-YL SWING POWER SOL 13 B783-OR 200-BK WIPER WASHER 113-OR 113-OR 37 CONN 55 R 6C-9177 E-2
C A
101-RD-4 101-RD-4 500-BR 615-YL-14 200-BK RELAY RELAY HORN 506-PU 172-GN S 7Y-8226 A-8

RELAY BOX
D A
113-OR 501-GN 629-PK-14 BACK UP SW B 28 A768-BU 140-BU 3E-6477 3E-6477 RELAY A983-BU 120-YL U 7Y-8105 D-8
CONN 36 CONN 52
A761-PU 615-YL-14 124-GN-14 BYPASS SOL 2 26 A754-GY 3E-6477 535-BU 107-WH W 102-7941 E-6
L19 X 6C-9134 E-2 NOTE B
629-PK-14 120-YL FAULT ALARM 27 410-WH 535-BU 500-BR 105-BR CHASSIS
113-OR 500-BR DATA + 30 B955-YL 114-GN 114-GN 792-OR 121-YL Y 123-8309 F-8

L20
607-PK-14 501-GN GOV ACT BU SW - 20 B789-BR-14 140-BU 140-BU 501-GN 118-GY Z 7Y-5504 F-2
L11 L12 L12 ENGINE
535-BU 113-OR GOV ACT - 7 B739-WH-14 607-PK-14 607-PK-14 322-GY 185-YL-14
118-GY 113-OR PUMP DATA - 40 B956-PK 791-PK 365-YL 791-PK 320-OR 142-BU 365-YL SS 121-7164 F-10 NOTE A
L6
A763-GY-14

CONTROL QQ 102-4726 A-3 NOTE A

B751-YL-14

410-WH 113-OR LOW IDLE SW 36 B786-BU 365-YL 615-YL-14 129-BU 323-WH

102-8025
A761-PU

B789-BR-14 GOV ACT BU SW + 19 B790-OR-14 791-PK 168-GN 629-PK-14 140-BU D A

235-BK
113-OR

B739-WH-14 410-WH GOV ACT + 6 B740-OR-14 168-GN A539-BU 506-PU L23 L27
B957-GN 1 B957-GN
B790-OR-14 B789-BR-14 EP SOL - 9 B730-OR CHASSIS 607-PK A983-BU 168-GN 168-GN CABLE AS.
2
B740-OR-14 B739-WH-14 EP SOL + 8 B731-WH LAMP BUCKET 791-PK 535-BU
ENGINE RELAY B957-GN OPEN CONN 75
B955-YL B790-OR-14 ACCEL SW TERM S4 29 A758-BR 586-BR 500-BR AA 7Y-8294 A-2

RELAY BOX
GOVERNOR B956-PK B740-OR-14 ACCEL SW TERM S3 39 A757-GY 3E-6477 B957-GN RELAY 585-YL 792-OR BB 7Y-8295 A-2
ACTUATOR B786-BU B955-YL ACCEL SW TERM S2 38 A756-BU A ATCH REFUELING 3E-6477 A539-BU 501-GN JJ CC CC 7Y-3881 A-2
7Y-5468 B730-OR B956-PK ACCEL SW TERM S1 37 A755-PK 140-BU 6 115-PK-14 PUMP RELAY 585-YL A540-WH 322-GY BK-00 BK-00 DD 7Y-8297 A-2
A L6 3E-6477
B731-WH B786-BU HEAVY LIFT SOL 2 10 103-YL 1 320-OR EE 7Y-8298 C-12
5V+ PROVISION D DISCONNECT
24V+ OR 1 113-OR A758-BR B730-OR KEY SW ON 13 308-YL 200-BK 2 615-YL-14 615-YL-14 615-YL-14 FF 7Y-8299 F-8
GND GND BK 2 235-BK A757-GY B731-WH +BATTERY 1 184-BU-14 439-YL AUTO-LUB ATCH-HP LAMP 200-BK 607-PK-14 L18 L18 607-YL 2 SWITCH GG 7Y-5444
3 791-PK F-11 NOTE C
L30 L29 615-YL 1 7N-0719
SIG SIG PU 3 A761-PU A756-BU A758-BR CHASSIS RELAY 14 791-PK A447-PK 4 RELAY 3E-6477 A540-WH 791-PK HH 7Y-5446 F-11 NOTE C
4 A763-GY-14 A755-PK A757-GY WASHER RELAY 25 A983-BU 5 586-BR CONN 76 JJ 7Y-5445 F-11 NOTE C
5 B751-YL-14 403-GN A756-BU WIPER RELAY 35 792-OR BUCKET 585-YL KK 7Y-5501 C-4
CONN 70

BK-00
405-GY A755-PK OPTION RELAY 3 24 A S CAB CLOSE A539-BU LL 7Y-5502 C-4
CONN 37 117-YL-14
BU 113-OR 495-GN HARN CODE 1 12 264-BK 1 LAMP RELAY A540-WH MM 7Y-5503 C-4
RELAY 3E-6477 L23
492-GY 321-BR HARN CODE 2 22 265-BK 2 265-BK B957-GN D QQ NN 7Y-8299 F-9
788-YL 491-PK HARN CODE 3 32 266-BK 3 266-BK 3E-6477 586-BR 168-GN 323-WH-14 5 323-WH-14 DD
M HARN CODE 4 33
A762-PU 403-GN 267-BK 4 116-BR-14 629-PK-14 629-PK-14 365-YL B957-GN 3 B957-GN
L8 CHASSIS 7Y-3917 00 SEPT 95
327-PK 405-GY 34 CONN 51 B957-GN 168-GN-14 4 A
A L24 L24
201-BK

YL 109-OR-4 492-GY GROUND 2 235-BK FUSE & RELAY PANEL 168-GN 168-GN 2 168-GN-14
304-WH-8 788-YL GROUND 5 235-BK 615-YL 615-YL 365-YL 365-YL 1 168-GN THIS SCHEMATIC IS FOR THE 5080 EXCAVATOR.
101-RD-4 A762-PU OPTION RELAY 1 15 607-YL 607-YL 365-YL
CONN 77 ATCH
113-OR A761-PU OPTION RELAY 2 16 AA BB
A761-PU OPTION VALVE + 17 MAIN RELAY COMPONENTS ARE SHOWN INSTALLED ON A FULLY
RELAY BOX RD-00 BK-00
A A OPTION VALVE - 18 RD-18 1 107-WH 101-7740 OPERABLE MACHINE WITH THE KEY AND ENGINE OFF.
+ BATTERY
HYD OIL 201-BK 491-PK PREHEAT 23 GROUND BK-18 2 200-BK (NOTE A)
ENGINE L20 UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAGE.
SENDER RS232 RXD 31 CHASSIS ENG SOL BU-18 3 327-PK POS NEG BATTERY POSNEG
T¡ SHUTDOWN
4I-5394 RS232 TXD 21 4 9X-9731
CONTROL
3 OFF (KEY) WH-18 6 326-PU NOTE A : USE WITH ATCH REFUELING PUMP
9G-9287
201-BK 4 RESET YL-18 5 306-GN NOTE B : USE WITH FOG GUARD
11 OFF OR-18 7
A NOTE C : USE WITH ATCH COLD WEATHER START GP
CONN 1 A CONN 53
BK-00 BK-00 BK-00 BK-00 NOTE D : NOT USED WITH FALLING OBJECT GUARD ATCH

RD-00 RD-00 RD-00 RD-00

D39528
12 11 10 9 8 7 6 5 4 3 2 1