Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Actuator - Engine Governor A-12 1 Relay - Main (Atch) A-2 D
Alarm - Action D-4 A Relay - Refueling Pump A-5 D
Alarm - Travel B-10 E Relay - Start B-4 D
Alternator E-12 2 Relay - Washer B-5 D
Assembly - Block C-4 D Relay - Wiper B-6 D
Assembly - Diode D-2 A Resistor - Backup F-6 C
Batteries A-2 3 Seat Heater F-5 16
Batteries (Atch) F-11 3 Sender - Coolant Temp E-11 17
Breaker - Alternator C-4 D Sender - Hydraulic Oil A-10 18
Buzzer (Atch) E-3 A Sensor - Engine Speed D-11 19
Control - Engine Shutdown A-4 D Sensor - Fuel Level E-10 20
Control - Engine/Pump B-9 4 Solenoid - A/C Clutch F-12 21
Control - Operator L.H. F-3 C Solenoid - Bypass 1 D-10 E
Control - Operator R.H. E-3 B Solenoid - Bypass 2 C-9 E
Converter - AM/FM Radio D-8 5 Solenoid - Engine Shutdown E-11 22
Diode C-4 C Solenoid - Engine/Pump D-10 E
Fuses B-5,6 D Solenoid - Hammer Control 1 (Atch) E-2 A
Ground - Cab D-6 5 Solenoid - Hammer Control 2 (Atch) E-2 A
Ground - Cab E-1 6 Solenoid - Hammer Control (Atch) E-1 A
Ground - Cab F-1 6 Solenoid - Start Aid F-12 23
Ground - Cab F-2 6 Solenoid - Swing Power E-10 E
Ground - Chassis A-2 7 Solenoid - Travel Speed D-10 E
Ground - Chassis A-B 4 Switch - A/C Refrigerant F-11 24
Ground - Chassis B-2 8 Switch - Auto Lube F-4 C
Ground - Chassis C-11 9 Switch - Backup Accel E-5 B
Ground - Chassis C-12 10 Switch - Backup Governor E-6 B
Ground - Chassis D-11 E Switch - Coolant Temp (Start Aid) D-11 19
Ground - Platform D-3 -6 Switch - Disconnect A-2 7
Ground - Platform E-3 A Switch - Engine Oil C-11 9
Ground - Platform E-8 A Switch - Front Linkage D-10 E
Ground - Platform F-4 C Switch - Fuel Level F-10 25
Ground - Platform F-B A Switch - Hammer Control (Atch) E-2 A
Group - Conditioner E-7 11 Switch - Hammer Foot (Atch) D-1 A
Horn F-1 12 Switch - Heavy Lift F-5 C
Lighter - Cigar D-4 A Switch - Key Start D-5 B
Meter - Service D-5 A Switch - Neutral Start F-2 26
Meter - Service (Atch) E-1 A Switch - Pressure Safety (Atch) D-2 A
Monitor D-4 A Switch - PS Valve Backup F-6 C
Motor - Starter C-12 10 Switch - Radio Control F-4 C
Motor - Washer E-10 13 Switch - Refueling Pump Start F-11 27
Motor - Wiper Bottom F-2 14 Switch - Refueling Pump Stop F-10 27
Motor - Wiper Top F-2 6 Switch - Rocker (Atch) E-3 B
Pump - Refueling F-10 15 Switch - Seat Heater F-5 C
Relay - Boom Lamp A-5 D Switch - Start Aid E-4 B
Relay - Cab Lamp A-6 D Switch - Swing E-10 E
Relay - Chassis Lamp A-6 D Switch - Throttle Position D-4 B
Relay - Horn B-5,6 D Switch - Travel D-10 E
Relay - Main C-4 D Switch - Windshield D-5 A
Machine locations are repeated for components located close together. D = Located in relay panel.
A = Located in cab. E = Located near main control valve.
B = Located in operator’s right hand console. F = Located around pilot manifold.
C = Located in operator’s left hand console. G = Located under platform.
Component Location
Connector Location¹
Connector Number
Schematic
Location
Machine
Location
CONN 1 B-12 9
CONN 2 B-12 9
CONN 3 B-12 9
CONN 4 B-12 9
CONN 5 C-12 9
CONN 6 F-11 15
CONN 7 A-8 4
CONN 8 D-8 A
CONN 9 E-8 28
CONN 10 F-8 28
CONN 11 C-7 E
CONN 12 D-6 A
CONN 13 D-6 A
CONN 14 E-6 29
CONN 15 F-6 30
CONN 16 F-6 30
CONN 17 E-5 29
CONN 18 E-5 29
CONN 19 D-5 A
CONN 20 D-4 A
CONN 21 F-4 30
CONN 22 D-3 A
CONN 23 D-3 B
CONN 24 D-3 C
CONN 25 C-3 D
CONN 26 A-3 D
CONN 27 A-3 D
CONN 28 B-2 8
CONN 29 C-2 31
CONN 30 D-2 26
CONN 31 E-2 26
CONN 32 E-2 26
CONN 33 E-2 26
CONN 34 F-2 A
CONN 35 F-1 26
CONN 36 F-1 12
CONN 37 D-1 12
¹The 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.
Related Electrical Service Manuals
Form Number
Alternator: 5S-9088
Consist No. 9G-9538 SENR2082
Consist No. 6T-7223 SENR4130
Consist No. 3T-1888 SENR7507
Alternator: 8N-0999 SENR7507
Electrical Lubricator SENR8903
Engine Pump Control SENR6155
Starting Motor: 6V-5539
Consist No. 6V-5540 SENR3536
Consist No. 106-8554 SENR3581
Consist No. 6V-5582 SENR4975
Title
Resistor, Sender and Solenoid Specifications
Part No. Component Description Resistance (Ohms)¹
41-5394 Sender - Hydraulic Oil Temp 6130 to 7500
7T-9746
Solenoid - Bypass #1
Bypass#2
33.6
9G-4365 Solenoid - Start Aid 6.0
101 -1759 Solenoid - A/C Clutch 14.4 ± 0.6
102-8014 Resistor - Backup 58 ± 2.9
110-6465 Solenoid - Engine Shutdown 5.12 ± 0.26
116-4416
Solenoid - Hammer Control 1
Hammer Control 2
34.2
¹ At room temperature unless otherwise noted.
Code Description of Problems
E00 No problem
E 1 Engine oil pressure is too low.
E 2 Engine coolant temperature is too high.
E 3 Hydraulic oil temperature is too high.
E 4 Battery voltage is not normal.
E 5 Alternator terminal circuit is open.
E 6 Engine speed sensor circuit is open or sensor is not installed correctly.
E 7 Engine speed is not normal.
E 9 Governor actuator feedback sensor voltage is too low.
E1 0 Governor actuator feedback sensor circuit is open or shorted to battery voltage.
E1 1 Governor actuator feedback sensor circuit is shorted to body ground.
E1 2 Governor actuator feedback sensor voltage is not stable.
E1 3 Governor actuator motor (+) circuit is shorted to body ground.
E1 4 Governor actuator motor does not rotate or motor circuit is shorted to battery voltage.
E1 5 Governor actuator motor (+) circuit is open.
E1 6 Proportional reducing valve (+) circuit is shorted to body ground.
E1 7 Proportional reducing valve (+) circuit is shorted to battery voltage.
E1 8 Proportional reducing valve circuit is open,
E25 Engine coolant temperature sensor circuit is shorted to body ground.
E26 Engine coolant temperature sensor circuit is open or shorted to battery voltage.
E27 Hydraulic oil temperature sensor circuit is shorted to body ground.
E28 Hydraulic oil temperature sensor circuit is open or shorted to battery voltage.
E31 Engine speed dial signal is not one of the specified 10.
E32 There is more than 100 rpm difference between engine speed dial setting and actual speed.
E33 Solenoid output circuit is shorted to +battery or ground.
E34 Governor actuator remains deactivated an elapsed time of 2.5 seconds after engine speed dial setting.
E36 Monitor takes at least one second to respond to controller’s signal.
E37 Monitor RAM is not normal.
E38 Controller is informed of its error signal by monitor.
E39 Controller detects its error signal by itself.
E40 Error in controller memory.
E41 A controller for a different machine is installed or there is a harness code problem.
E48 Engine stalls.
Real Time Error Codes
Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Circuits Accessory Circuits (Continued)
101 RD Bat (+) 521 YL A/C SW To Refrigerant SW
103 YL Aux Ckt 535 BU SW To Wiper SW
105 BR Key Sw 546 BU Aux Hyd - Rotate CW
107 WH Eng Shutdown 547 OR Aux Hyd - Rotate CCW
109 OR Alt Output (+) Term. 548 GY Aux Hyd - Open
112 PU Main Power Rly Output 549 PK Aux Hyd - Close
113 OR Opr Mon Panel B (+) Switched 550 OR Aux Hyd Left- Disconnect To SW
114 GN Warning Horn (Forward) 551 YL Aux Hyd Right- Disconnect To SW
115 PK Aux Ckt 586 BR Aux Hyd - Close
118 GY Aux Ckt A537 PK Seat Heater (Resistive Element In Cushion)
120 YL Aux Ckt Lighting Circuits
121 YL Back Alarm To Lamp 607 PK Flood Lamp - Front
122 BU Aux Ckt 615 YL Cab Flood Lamp/Rops
124 GN A/C 616 BU Bucket Flood Lamp/Boom Flood Lamp
129 BU Aux Ckt 633 BU Attach Lighting Ckt
140 BU Aux Ckt Control Circuits
142 BU Aux Ckt 763 BU Torque Converter SW
146 GY Aux Ckt 786 GN Eng Speed Cont - Hi Press SW
149 PU Aux Ckt 788 YL Eng Speed (+)
168 GN Aux Ckt 791 PK Eng Speed Cont - Lo Sol
172 GN Aux Ckt 792 OR Underspeed Proportional Sol
184 BU Aux Ckt A754 GY Electronic Pump Cont VCC
185 YL Aux Ckt A755 PK Throttle SW #1
198 PK Aux Ckt A756 BU Throttle SW #2
Ground Circuits A757 GY Throttle SW #3
200 BK Main Chassis A758 BR Throttle SW #4
201 BK Operator Monitor Return A761 PU Electronic Pump Cont Throttle Ground
235 BK Electronic Pump Ctrl Gnd A762 PU Electronic Pump Cont Eng Speed Ground
264 BK Electronic Pump Ctrl Ident Code 3 A763 GY Electronic Pump Cont Decel (-)
265 BK Electronic Pump Ctrl Ident Code 2 A768 BU Pump Control Valve #1 (+)
266 BK Electronic Pump Ctrl Ident Code 1 A769 GY Pump Control Valve #2 (-)
267 BK Electronic Pump Ctrl Ident Code 0 A770 PK Electronic Pump Control Bypass SW To Resistor
Basic Machine Circuits A771 PU Float SW
304 WH Starter Relay No. 1 Output B730 OR Electronic Pump Control Ps Valve (-)
306 GN Starter Relay Coil To Neut Start SW Or Key SW B731 WH Electronic Pump Control Ps Valve (+)
307 OR Key SW To Neut Start SW Or Vmis Sensor Module B733 YL Heavy Lift Sol Valve
308 YL Main Power Relay Coil B734 GY Electronic Pump Control To Switch Common Return
310 PU Start Aid SW To Start Aid Sol B737 GN Electronic Pump Control To Travel Pressure Switch
311 WH Start Aid Sol To Temp SW B738 BR Heavy Lift SW
320 OR Horn Relay Coil To SW B739 WH Electronic Pump Control Display SW Hold Input
321 BR Travel Alarm B740 OR Electronic Pump Control Display SW Clr Input
322 GY Warning Horn (Forward) B749 GN Electronic Pump Control Backup Switch Off
323 WH Fuel Pump Power B751 BU Centershift Lock Sol
325 PK Fuel Pump Relay Cut-Out B783 OR Swing Power Charge Sol
326 PU Key SW “C” Term. B786 BU Low Idle SW
327 PK Shutdown Sol B789 BR Governor Actuator (-)
365 YL Fuel Pump Relay To Switch B790 OR Governor Actuator (+)
Monitoring Circuits D776 WH Excv Heavy Lift Sol 1 & Sol 2
403 GN Alternator (R) Term. D777 PU Excv Heavy Lift Sol 3
405 GY Opr Mon Oil Press. (Low Setting) 8103 YL/RD Beacon Light
410 WH Opr Mon Action Alarm A848 PK Left Flow Gate Up Sol
439 YL Lamp Indicator A850 WH Right Flow Gate Up Sol
491 PK Hyd Oil Temp Sensor 951 PK Hammer Sol C
492 GY Coolant Temp Sensor Signal 952 OR Hammer SW B
495 GN Fuel Level Signal 953 GY Hammer Sol B
A447 PK Prelube Press. SW To Prelube Timer 955 BU Hammer Sol A
Accessory Circuits A983 BU Eng Throttle Cont - Signal
500 BR Wiper - Front (Park) B955 YL Excavator System Lock Limit Switch
501 GN Wiper - Front (Low) B956 PK Excavator System Lock Sol
506 PU Washer - Front B957 GN Excavator Fuel Pump Switch
513 OR A/C Compressor/Refrigerant Pressure SW
Off Machine Switch Specification
Part No. Function Actuate Deactuate
Contact Position
4I-5394
Front Linkage, Swing,
Travel Press
490 ± 49 kPa MAX
(71.0 ± 7.1 psi)
290 kPa MIN(42.0 psi MIN) Normally Open
6T-1546 Engine Oil Press
93.0 ± 20.8 kPa
(13.5 ± 3.0 psi)
68.9 ± 20.8 kPa(10.0 ± 3.0 psi)
1-3 Normally Closed
1-2 Normally Open
8N-1693 Coolant Temp (Start Aid)
37.8 ± 2.8°C
(100 ± 5°F)
26.7°C MIN(80°F MIN) Normally Closed
114-5334 Refrigerant Pressure (AC)
275 to 1750 kPa ¹
(40 to 255 psi)
- Normally Open ²
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 position at the contacts of the harness connector.
SENR1903
February 1997
375 and 375 L Excavator
Electrical System
375:
6NK156-UP
375 L:
9WL132-UP
©
1997 Caterpillar
All Rights Reserved
Printed in U.S.A.
A
3
4
5
6
8
9
10
11
12
14
15
13
16
B
C
D
E
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
7
A
3
4
5
6
8
9
10
11
12
14
15
13
16
B
C
D
E
1
2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
7
Machine Harness Connector And Component Locations
D88081
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
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
A AA
2
A AA
1
2
325-PK-14
C
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
Socket
Pin
Pin or Socket
Number
Wire, Cable, or Harness
Assembly Identification
Single Wire
Connector
Circuit Number
Identification
Wire
Gauge
Wire
Color
Plug
Receptacle
9X-1123
Component
Part Number
Electrical Schematic Symbols And Definitions
1
1
1
2
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.
WINDSHIELD
SW
9G-2795
BOOM LAMP
5I-8250
BOOM LAMP
5I-8252
ATCH
BOOM LAMP
5I-8250
ATCH
BOOM LAMP
5I-8252
DISCONNECT
SWITCH
7N-0719
1
2
1
2
MOTOR
L
H
T °
1
4
3
2
HARNESS AS.
OPERATOR STATION
OPERATOR STATION OPERATOR STATION OPERATOR STATION
LOCPART NO.IDENT
CIRCUIT GROUPING
DESIGNATION
#L
2
1
ATCH WIRE, CABLE,
COMPONENT
CIRCUIT NOT CONNECTED
CIRCUIT CONNECTED
BLUE
GREEN
BU
GN
RD
WH
OR
YL
PK
BK
BLADE, SPADE, RING,
OR SCREW TERMINAL
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
ELECTRICAL CONNECTION
CONNECTOR
SYMBOL
200-BK
103-YL
140-BU
PUMP START SW
PUMP ON
5
4
GROUND
+BATTERY
ON(KEY)
3
DESCRIPTION
2
1
L47
6
BR
A447-PK
439-YL
3
2
140-BU
A
1
RD
140-BU
UU 111-4794 A-3
BK
RD
320-OR
200-BK
G
FOR ATCH
HEAVY LIFT 1 SOL.
G
2
235-BK
B786-BU
1
D776-WH
146-GY
A
122-BU
1
22
1
1
2
BROWN
PURPLE
GRAY
BLACK
COLORABBREV
PINK
YELLOW
ORANGE
WHITE
RED
BR
PU
GY
A 121-7162
B
118-0313
C 114-3096
D 124-7559
E 117-5648
F 7Y-8292
G 115-8037
H 7Y-8290
J 119-2091
K 6C-9031
L 7Y-5405
N
129-8075
P 7Y-5442
R
S
T
6C-9177 F-2
CABLE AS.
AA 7Y-8294 A-2
BB A-2
CC A-2
DD
EE 7Y-8298
FF 7G-1060
GG 7Y-5444
HH 7Y-5446
JJ 7Y-5445
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF.
SERVICE
METER
6T-7337
+BATTERY
DATA +
DATA -
GROUND
308-YL
1
2
A768-BU
A769-GY
CIGAR
LIGHTER
9W-0335
RD
BK
9G-9813
A770-PK
RESISTOR
102-8014
235-BK
124-GN
124-GN
A447-PK
1
2
3
4
N
A537-PK
B738-BR
235-BK
B738-BR
124-GN
200-BK
A537-PK
2
3
1
4
200-BK
N
B
122-BU
BK-18
YL-18
BK-18
PK-18
N
P
4
3
120-YL
N
N
ATCH SEAT
HEATER
1216959
ATCH SEAT
HEATER SW
7X-6386
2
1
N
2
1
10
9
105-BR
NB
307-OR
308-YL
439-YL
N
PLATFORM
2
1
200-BK
6
4
3
12
5
8
5
7
6
3
1
4
2
B730-OR
N
PS VALVE
BACKUP
3T-4405
235-BK
185-YL-14
B731-WH
N
DOME LAMP
8C-9678
SW
9G-7641
308-YL
306-GN
D777-PU
146-GY
607-PK-14
322-GY
B734-GY
320-OR
306-GN
307-OR
BK-18
BK-18
MM
G
L26
3T3132
120-4163
E-3MM
WIRE AS
E-1119-7180
D-2
WW
BBB
BBB
586-BR
439-YL
NN
1
2
YL
GN
ATCH HAMMER
CONT. SOL.2
116-4416
ATCH
HEAVY LIFT SW
7X-6386
1
2
BK
RD
D777-PU
D777-PU
BU
GROUND
D777-PU
146-GY
607-PK-14
322-GY
320-OR
B
NEUTRAL START
SW 9W-2150
FOR ATCH
HEAVY LIFT 3 SOL
GY
RD
BK
A755-PK
A756-BU
A757-GY
A769-GY
A768-BU
D776-WH
146-GY
B738-BR
B734-GY
D776-WH
B734-GY
B738-BR
439-YL
A447-PK
AM / FM RADIO
439-YL
A447-PK
CHASSIS
LAMP
5I-8250
R
C
S
B
OFF
ON
ST
POS NEG POS NEG
BATTERY
9X-9731
F
E
D
C
B
A
F
E
D
C
B
A
12 11 10
9 8 7 6 5 4 3 2
1
12 11 10
9 8 7 6 5 4 3 2
1
ATCH REFUELING PUMP
START SW(NORMALY OPEN)
119-8311
SS
1
2
168-GN
B957-GN
200-BK
323-WH-14
365-YL
1
2
3
4
5
6
365-YL
439-YL
586-BR
2
1
1
2
ATCH-PRESSURE SW
SAFETY 118-7722
ATCH-SW AS.ROCKER
7X6386
YL
365-YL
325-PK
953-GY
551-YL
2
1
NOTE H
TT TT
GN
2
1
TT TT
1
2
WW
ATCH HAMMER
CONT.SOL.
7Y5005
ATCH SERVICE
METER
6T7337
-
+
953-GY
551-YL
953-GY
551-YL
953-GY
551-YL
586-BR
200-BK
1
2
TT
ATCH HAMMER
CONT. SOL.1
116-4416
2
L32
L32
L31
L31
547-OR
546-BU
198-PK
198-PK
L37
L36
L34
L34
RH-SW
LH-SW
HORN SW
BBB
198-PK
547-OR
546-BU
198-PK
CA
B
200-BK
200-BK
615-YL
615-YL
ATCH
CAB LAMP
5I-8250
ATCH
CAB LAMP
5I-8250
615-YL
YL
117-5645
BOLT
117-5645
BOLT
Z
322-GY
607-PK-14
H
2
Z
II
C-27Y-3808
FOR ATCH
GREASE PUMP
NOTE C
NOTE C
F-17Y-5504
123-8309
F-8
M NOTE D
NOTE C
551-YL
951-PK
3
2
1
951-PK
3
2
1
551-YL
551-YL
TT
PP PP
551-YL
953-GY
951-PK
551-YL
955-BU
951-PK
551-YL
955-BU
951-PK
551-YL
953-GY
951-PK
PP PP
TT WW
551-YL
953-GY
551-YL3
2
1
951-PK
3
2
1
1220386
DIODES AS
A850-WH
A848-PK
953-GY
951-PK
548-GY
547-OR
548-GY
547-OR
PP
PP
146-GY
198-PK
118-6173BBB D-2
955-BU
198-PK
2
1
ATCH-HAMMER FOOT
SW
1
2
3
BU
J PP
QQ
A850-WH
550-OR
549-PK
546-BU
B734-GY
A848-PK
550-OR
547-OR
546-BU
198-PK
3
2
1
551-YL
953-GY
951-PK
551-YL
955-BU
951-PK
WW
4
5
3
1
2
B957-GN
168-GN-14
200-BK-14
103-YL
615-YL
2
5
3
4
1
124-GN-14
PP
B
B734-GY
122-BU
103-YL
615-YL
200-BK
1
365-YL
2
200-BK
311-WH
4
3
2
1
ATCH COMBINED
SOL
RR
BK
RR
RR
1
2
201-BK
405-GY
788-YL
A762-PU
327-PK
201-BK
113-OR
403-GN
521-YL-14
492-GY
RR
200-BK
952-OR
L26
NN
L27
RD
403-GN
323-WH-14
L25
GG
HH
JJ
2
168-GN
B957-GN
GY
1
365-YL
323-WH-14
101-RD-14
168-GN
B957-GN
365-YL
365-YL
323-WH-14
ATCH
MAIN RELAY
101-7740
(NOTE B)
365-YL
168-GN
168-GN-14
101-RD-14
L2
L26
ENGINE
SPEED
3E-7886
ENGINE
SHUTDOWN
6T-4122
B957-GN
323-WH-14
BK-00
RD-00
RD-00
327-PK
L27
109-OR-4
304-WH-8
101-RD-4
200-BK
323-WH-14
200-BK-4
325-PK
200-BK-14
A761-PU
323-WH-14
168-GN
BK-00
RD-00
BK-00
L27
109-OR-4
113-OR
492-GY
201-BK
327-PK
113-OR
200-BK
492-GY
201-BK
200-BK
521-YL-14
403-GN
327-PK
200-BK-4
403-GN
326-PU
200-BK
521-YL-14
201-BK
492-GY
200-BK
113-OR
CHASSIS
B955-YL
109-OR-4
BK-18 1
2
B751-YL-14
A763-GY-14
235-BK
521-YL-14
311-WH
492-GY
200-BK
403-GN
113-OR
201-BK
405-GY
327-PK
A762-PU
788-YL
WH-18
RD
BK
FUEL
LEVEL
SENSOR
105-9993
RADIO
CONTRL SW
7X6386
AUTO-LUB
PUMP GP
108-6690
A447-PK
B749-GN
492-GY
403-GN
A761-PU
A762-PU
788-YL
113-OR
200-BK
323-WH
365-YL
HYD OIL
SENDER
4I-5394
495-GN
491-PK
101-RD-4
327-PK
326-PU
121-YL
615-YL-14
113-OR
120-YL
124-GN-14
103-YL
129-BU
146-GY
501-GN
500-BR
506-PU
105-BR
320-OR
322-GY
306-GN
BR
304-WH-8
308-YL
200-BK
109-OR-4
403-GN
109-OR-4
304-WH-8
101-RD-4
A763-GY-14
521-YL-14
B737-GN
113-OR
120-YL
124-GN-14
103-YL
129-BU
146-GY
501-GN
500-BR
310-PU
105-BR
320-OR
322-GY
306-GN
308-YL
ATCH HAMMER
CONT SW 7X6388
A
B789-BR-14
B739-WH-14
B790-OR-14
B740-OR-14
B731-WH
B730-OR
A758-BR
B734-GY
B738-BR
439-YL
615-YL-14
B751-YL-14
607-PK-14
B956-PK
410-WH
535-BU
118-GY
B786-BU
YL
107-WH
BU
200-BK
PU
BK
327-PK
5
4
3
2
1
SIG
GND
OR24V+
M
SIG
506-PU
495-GN
2
1
952-OR
140-BU
140-BU
MOTOR
200-BK
WASHER
MOTOR
7T-8890
CHASSIS
101-RD-4
304-WH-8
109-OR-4
788-YL
A762-PU
ATCH REFUELING PUMP
STOP SW(NORMALY CLOSED)
117-4557
327-PK
405-GY
113-OR
168-GN
B957-GN
NOTE D
NOTE D : USE WITH LIGHTING GP-CAB(FOPS)
109-OR-4
403-GN
A
101-RD-4
492-GY
535-BU
118-GY
607-PK-14
GN
4
A761-PU
113-OR
172-GN
235-BK
A763-GY-14
200-BK
ENGINE
GOVERNOR
ACTUATOR
7Y-5468
B751-YL-14
5
7
RD-18
200-BK
506-PU
BK-18
2
B786-BU
118-GY
535-BU
410-WH
B956-PK
607-PK-14
1
BU-18
OR-18
615-YL-14
A755-PK
113-OR
A756-BU
A757-GY
A758-BR
321-BR
B730-OR
A761-PU
B731-WH
+ BATTERY
GROUND
ENG SOL
B740-OR-14
405-GY
RESET
OFF (KEY)
OFF
B790-OR-14
101-RD-14
491-PK
B739-WH-14
B789-BR-14
308-YL
306-GN
322-GY
320-OR
105-BR
500-BR
501-GN
146-GY
129-BU
103-YL
124-GN-14
120-YL
113-OR
B786-BU
410-WH
B956-PK
A755-PK
A756-BU
A757-GY
A758-BR
B730-OR
B731-WH
B740-OR-14
B790-OR-14
B739-WH-14
B789-BR-14
B955-YL
326-PU
B955-YL
146-GY
D777-PU
A754-GY
ALT
GROUND
G S
MTR BAT
MOTOR
B733-YL
SIGNAL
BK
YL
OR
STARTER
6V-5539
2
ATCH
FUEL
LEVEL SW
5C-6108
SS
B738-BR
A447-PK
439-YL
439-YL
A447-PK
D777-PU
146-GY
B733-YL
124-GN
AREAL
ANTENNA
6C3431
L18
6
A754-GY
172-GN
7
1
REFUELING
168-GN-14
A
SS
C
SS
B
+
R
ATCH
REFUELING
PUMP
102-6168
BU
BYPASS 2
7T-9746
COLD WEATHER
BYPASS 1
7T-9746
1
2
1
2
B733-YL
8
ATCH COMBINED
SW
L18
549-PK
548-GY
198-PK
549-PK
548-GY
198-PK
4
6
1
2
146-GY
PP
146-GY
551-YL
550-OR 550-OR
551-YL
2
1
L22
L22
307-OR
L21
L20
L38
W
G
L21
200-BK-14
2
1
L20
L10
L3
20A
SS
201-BK
121-7164 F-10
AA
118-3167
F-1
A
9
5
4
3
B957-GN
168-GN
320-OR
322-GY
L25
109-OR-4
L14
L12
L11L11
L12
L10
L3
L14
201-BK
L13
L12
L11
L8
L5
L4
140-BU
L13
L7
L9
L7
101-RD-4
L6
L5
L8
L9
201-BK
L9
L8
L7
L2
L6
121-YL
172-GN
786-GN
607-PK-14
A983-BU
L4
L6
L1
2
1
9
304-WH-8
10
10
792-OR
103-YL
615-YL-14
120-YL
535-BU
506-PU
616-BU-14
791-PK
501-GN
B734-GY
521-YL-14
633-BU-14
124-GN-14
118-GY
129-BU
142-BU
500-BR
113-OR
146-GY
105-BR
124-GN-14
107-WH
120-YL
103-YL
184-BU-14
615-YL-14
112-PU-12
101-RD-14
101-RD-14
200-BK
140-BU
PP
320-OR
322-GY
113-OR
NOTE H : CONNECT THIS WAY WHEN ATCH HAMMER
FOOT SW IS USED
112-PU-12
308-YL
112-PU-14
112-PU-14
112-PU-14
101-RD-14
306-GN
1
32
A758-BR
129-BU
A757-GY
607-PK-14
5
2
3
BK
RD
BU
200-BK
3
2
1
L19
550-OR
W
551-YL
321-BR
RD
B957-GN
168-GN
B957-GN
365-YL
168-GN
365-YL
A/C CLUTCH
101-1759
L19
501-GN
322-GY
201-BK
410-WH
B955-YL
B956-PK
113-OR
118-GY
101-RD-14
109-OR-4
200-BK-4
101-RD-4
327-PK
326-PU
616-BU-14
633-BU-14
121-YL
615-YL-14
184-BU-14
792-OR
A983-BU
786-GN
791-PK
1
185-YL-14
120-YL
124-GN-14
129-BU
146-GY
4
S
4I-5398
1
3
114-GN
L1
501-GN
500-BR
506-PU
172-GN
10A
140-BU
KK
115-PK-14
15A
149-PU-14
112-PU-14
142-BU
105-BR
112-PU-14
10A
10A
L17
786-GN
115-PK-14
791-PK
615-YL-14
616-BU-14
115-PK-14
149-PU-14
149-PU-14
786-GN
786-GN
149-PU-14
633-BU-14791-PK
L15
115-PK-14
E
103-YL
200-BK-14
K K
615-YL-14
B957-GN
168-GN
B957-GN
365-YL
168-GN
365-YL
L2
L1
607-PK-14
122-BU
1
B789-BR
A756-BU
535-BU
311-WH
200-BK
A762-PU
788-YL
201-BK
405-GY
BOOM
LAMP
RELAY
7Y-5490
267-BK
266-BK
265-BK
264-BK
ATCH-BUZZER
113-4683
16
9
10
4
11
5
2
8
22
24
K
2
235-BK-14
14
3
18
23
6
12
21
15
20
7
19
17
1
31
21
11
23
26
410-WH
NN
MM
27
30
20
7
B956-PK
A755-PK
40
A756-BU
36
A757-GY
19
6
9
8
29
39
38
37
28
13
10
A758-BR
15
16
14
F-1
BK
J
QQ
129-BU
403-GN
B955-YL
B956-PK
113-OR
24
410-WH
501-GN
535-BU
500-BR
118-GY
201-BK
200-BK
201-BK
25
35
12
B730-OR
1
B731-WH
B
403-GN
201-BK
129-BU
200-BK
201-BK
500-BR
22
B955-YL
32
B956-PK
33
34
2
113-OR
B740-OR-14
13
B790-OR-14
5
B739-WH-14
B789-BR-14
410-WH
1
PREHEAT
AUTO-LUB
SW 1060037
RS232 RXD
RS232 TXD
792-OR
BYPASS SOL 1
500-BR
HEAVY LIFT SOL 1
118-GY
A763-GY-14
B751-YL-14
B955-YL
118-GY
501-GN
B789-BR-14
B739-WH-14
B790-OR-14
B740-OR-14
A769-GY
B731-WH
B730-OR
B790-OR
501-GN
RH-SW
LH-SW
198-PK
198-PK
549-PK
GOV ACT BU SW +
G
535-BU
G
G
ONE TOUCH
LOW IDLE SW
500-BR
A768-BU
308-YL
121-YL
403-GN
607-PK-14
410-WH
D777-PU
146-GY
B751-YL-14
A763-GY-14
B789-BR-14
B739-WH-14
B790-OR-14
B740-OR-14
B790-OR
6
4
A
A
A
MOTOR
B956-PK
113-OR
PK
BK
MONITOR
111-4749
521-YL-14
311-WH
5
B751-YL-14
A763-GY-14
403-GN
521-YL-14
20A 9W-1446
15A 9W-1441
GOV ACT BU SW -
10A 9W-1442
FUSE
120-4726
C-4
142-BU
172-GN
C-4
A768-BU
C-4
763-BU
B783-OR
B955-YL
A983-BU
B749-GN
F-11
535-BU
506-PU
4
A771-PU
491-PK
17
B738-BR
310-PU
X
B749-GN
F-11
A771-PU
F-12
F-8
C-12
1
2
7Y-5503
7Y-5502
7Y-5501
7Y-8297
3
235-BK
A-2
405-GY
403-GN
492-GY
235-BK
RELAY BOX
VV
LL
KK
E-6
OPTION VALVE -
311-WH
117-7028
200-BK
C-7
F-6
7Y-3881
C-2
7Y-8295
A-8
F-1
C-7
D-5
F-4
B-12
OPTION VALVE +
BB
AA
OPTION SENSOR
WIPER
RELAY
7Y-5490
WASHER
RELAY
7Y-5490
DD
CC
EE
GG
AA
D777-PU
146-GY
A
A
A
310-PU
A
A
A
A769-GY
A
A769-GY
A768-BU
A-3
763-BU
B786-BU
142-BU
308-YL
320-OR
105-BR
304-WH-8
B783-OR
A771-PU
495-GN
322-GY
B
308-YL
326-PU
105-BR
HORN
RELAY
7Y-5490
NOTE A : USE WITH SHORT BOOM.
320-OR
322-GY
114-GN
FUSE & RELAY PANEL
B786-BU
B-2
BK
310-PU
DIODE
121-1022
200-BK
4
ENG/PUMP
5I-8368
RELAY BOX
TRAVEL
SPEED
7I-1245
235-BK
B786-BU
105-BR
310-PU
FUSE & RELAY PANEL
FUSE & RELAY PANEL
326-PU
308-YL
A758-BR
A757-GY
A756-BU
A755-PK
4I6158
405-GY
3
ATCH
ALTERNATOR
8N-0999
ALTERNATOR
5S-9088
308-YL
10A
10A
LOW IDLE SW
B786-BU
GOV ACT +
EP SOL -
10A
EP SOL +
ACCEL SW TERM S1
ACCEL SW TERM S2
118-GY
308-YL
ACCEL SW TERM S3
326-PU
306-GN
WH-18
YL-18
6
RELAY BOX
ACCEL SW TERM S4
DATA -
201-BK
GOV ACT -
KEY SW ON 308-YL
15A
308-YL
10A
15A
10A
15A
OPTION SW 2
2
A755-PK
200-BK
172-GN
OPERATOR STATION
506-PU
A756-BU
A757-GY
A758-BR
7
326-PU
A758-BR
A757-GY
A756-BU
A755-PK
1
103-YL
615-YL-14
120-YL
5
B734-GY
521-YL-14
4
ATCH
GD CAB
R
2
T °
H
BK
C
C
C
C
C
C
112-PU-14
C
C
A
A
A
A
A
B751-YL-14
F
B
112-PU-14
184-BU-14
142-BU
140-BU
103-YL
120-YL
121-YL
F-1
J
124-GN-14
SHUTDOWN
HEATER
1
W
B
JJ
VV
LL
GB
B
B B
2
COOLANT LEVEL SW
B
II
H
H
K
K
K K
GROUND
235-BK
308-YL
117-7029
320-OR
322-GY
F
F
P L
113-OR
L
308-YL
L
P (NOTE A)
F
306-GN
P
D A
200-BK
103-YL
FRONT
LINKAGE
SW
4I-5387
A768-BU
2
20A
10A
129-BU
112-PU-12
113-OR
112-PU-12
101-RD-14
RADIO
SWING
121-YL
MONITOR
120-YL
10A
BYPASS SOL 2
OPTION RELAY 1
129-BU
A762-PU
172-GN
1
306-GN
304-WH-8
109-OR-4
OPTION RELAY 2
S4
CHASSIS RELAY
142-BU
113-OR
BOOMLAMP RELAY
WORK/TR
WASHER RELAY
WIPER RELAY
201-BK
792-OR
A983-BU
CIGAR
CHASSIS
LAMP
RELAY
7Y-5490
8
6
5
10
9
1
B
ATCH
BOOM
LAMP
RELAY
7Y-5490
129-BU
607-PK-14
501-GN
791-PK
ATCH
CAB
LAMP
RELAY
7Y-5490
306-GN
535-BU
535-BU
786-GN
500-BR
E-5
791-PK
S3
A763-GY-14
A761-PU
118-GY
A763-GY-14
B751-YL-14
B789-BR-14
FRONT LINK PR SW
ATCH PRESS. SW
B749-GN
B734-GY
AUX CKT
HARN CODE 1
HEAVY LIFT SOL 3
GREASE
107-WH
124-GN-14
R
KEY
10A
10A
235-BK
112-PU-14
112-PU-14
112-PU-14
B739-WH-14
109-OR-4
109-OR-8
2
1
109-OR-4
B790-OR-14
B740-OR-14
109-OR-8
101-RD-14
200-BK
308-YL
304-WH-8
235-BK-14
200-BK
321-BR
306-GN
112-PU-12
ALT
BREAKER
9S-4693
112-PU-12
BACKUP
172-GN
146-GY
112-PU-14
101-RD-14
118-GY
105-BR
506-PU
535-BU
A983-BU
2
501-GN
792-OR
500-BR
A769-GY
615-YL
3
SWING POWER SOL
WORK MODE 1 SOL
TRAVEL PR SW
SWG BRK PR SW
HARN CODE 2
BACKUP
ACCEL
7N-8008
HARN CODE 3
HARN CODE 4
BACKUP
GOVERNOR
3T-4405
B731-WH
1
START
RELAY
9X-8124
MAIN RELAY
3T-0376
101-RD-14
B734-GY
B730-OR
TRAVEL
SW
4I-5387
ENGINE
SHUTDOWN
9G-9287
80
A755-PK
SWING
POWER
6I-6826
10A
POS NEG POS NEG
2
2
A768-BU
B783-OR
308-YL
1
535-BU
308-YL
114-GN
118-GY
607-PK-14
184-BU-14
BK-18
HORN
114-GN
CONTROL
103-YL
TR ALARM
DOME LAMP
633-BU-14
WIPER
615-YL-14
200-BK
SWING
SW
4I-5387
235-BK
GND
1
2
4
3
2
615-YL
ENG OIL
SW
6T-1546
103-YL
COOLANT
TEMP
8N-1693
114-5334
101-RD-4
122-BU
535-BU
200-BK
5V+
1
2
101-RD-14
501-GN
G
G
C
788-YL
403-GN
BOTTOM
WIPER
410-WH
403-GN
403-GN
RD-18
2
501-GN
200-BK
B956-PK
B955-YL
535-BU
B783-OR
CHASSIS
201-BK
200-BK
2
A763-GY-14
B751-YL-14
3
+BATTERY
311-WH
521-YL-14
+B
200-BK-14
235-BK
T °
C
4
1
C
C
C
B737-GN
310-PU
B737-GN
B786-BU
2
ATCH
1
D777-PU
616-BU-14
E
633-BU-14
113-OR
185-YL-14
S2
S1
105-BR
185-YL-14
326-PU
185-YL-14
COM
185-YL-14
1
3
2
1
185-YL-14
185-YL-14
A758-BR
8
A757-GY
A756-BU
A755-PK
7
6
5
B
4
A
3
2
1
113-OR
113-OR
CHASSIS
BACK UP SW B
4
3
A
D
D
D
D
A
BK
BU-18
788-YL
2
4
3
1
OR
BR
GY
GN
L
P
1
6
10
5
9
8
3
2
Y (NOTE C)
185-YL-14
6
7
A
E
Z
439-YL
PLATFORM
5
A
308-YL
6 DIN 46327
200-BK
129-BU
201-BK
A
616-BU-14
F-8
40
2
1
101-RD-14
112-PU-14
235-BK
2
39
7
10
Y
B
D
B734-GY
BK
L26
L29
L38
L29
L47
J
J
786-GN
791-PK
J
320-OR
200-BK
A
607-PK-14
J
513-OR-14
168-GN
B957-GN
8
9
CHASSIS
CHASSIS
4
18
38
37
36
35
34
33
32
D-8
31
BLOCK AS.
9G-8451
4
1
3
E-1
2
200-BK
ATCH REFUELING
PUMP RELAY
7Y-5490
CHASSIS
1
BK-00
122-2396
1
BK-00
495-GN
307-OR
306-GN
NOTE C : USE WITH CAB RISER.
118-3168
A
30
29
ENGINE
PUMP
CONTROL
102-8025
4
3
BK-00
J
2
2
1
122-BU
B957-GN
6C9102
B957-GN
28
B957-GN
B957-GN
27
1
A
168-GN
E
26
365-YL
365-YL
25
24
L2
23
22
CONDITIONER GP
107-1994
21
20
SS
19
18
B
185-YL-14
410-WH
E
113-OR
L15
1
B956-PK
B955-YL
501-GN
185-YL-14
T °
2
2
535-BU
113-OR
201-BK
1
200-BK
200-BK
36
35
26
25
16
15
6
5
40
39
38
37
34
33
32
31
30
29
28
27
L17
535-BU
TOP
WIPER
E
24
23
22
21
20
19
18
17
14
13
12
11
10
9
8
7
4
3
2
1
B734-GY
D
BK-00
RD-00
BK-00
RD-00
COOLANT
TEMP
3E-5370
ATCH AUX
HYD CIRCUIT
ATCH PRESS
SW PUMP
EK
501-GN
L
L36
17
201-BK
16
15
14
13
200-BK
103-YL
1
200-BK
L37
PP
PP
235-BK
GD CAB
12
308-YL
-
3
107-WH
306-GN
200-BK
MOTOR
B789-BR-14
RD-00
TRAVEL SPD SOL
763-BU
A771-PU
B737-GN
2
BK-00
11
6C-9134
2
H
RD-00
10
9
8
322-GY
BK-00
A762-PU
L12
308-YL
105-BR
307-OR
326-PU
403-GN
311-WH
310-PU
RR
320-OR
322-GY
140-BU
121-YL
172-GN
786-GN
607-PK-14
A983-BU
792-OR
535-BU
PROVISION FOR
BEACON LIGHT
506-PU
616-BU-14
791-PK
501-GN
633-BU-14
118-GY
129-BU
185-YL-14
142-BU
500-BR
1
2
113-OR
B739-WH-14
B790-OR-14
146-GY
105-BR
124-GN-14
120-YL
103-YL
7
266-BK
264-BK
6
5
4
184-BU-14
615-YL-14
308-YL
109-OR-4
101-RD-4
304-WH-8
1
184-BU-14
200-BK-14
A850-WH
550-OR
549-PK
3
1
308-YL
CTRL GP RH
113-2531
CTRL GP LH
113-2531
A
B
ATCH
BATTERY
9X-9731
UU
A768-BU
2
535-BU
200-BK
501-GN
D
200-BK
200-BK
129-BU
403-GN
546-BU
B734-GY
A848-PK
550-OR
615-YL
SERV REPL
110-6465
A768-BU
521-YL-14
BK-00
N
200-BK
A769-GY
A
607-PK-14
322-GY
607-PK-14
200-BK-14
200-BK
322-GY
322-GY
200-BK
BK-00RD-00
1
CHASSIS LAMP
200-BK-14
607-PK-14
307-OR
633-BU-14
200-BK-14
200-BK-14
616-BU-14
200-BK-14
616-BU-14
306-GN
D777-PU
B740-OR-14
535-BU
201-BK
201-BK
235-BK
HORN
7T-0970
HORN
7T-0969
BOOM LAMP
L5
CHASSIS
LAMP
5I-8250
U
2
3
4
615-YL-14
184-BU-14
103-YL
120-YL
107-WH
124-GN-14
105-BR
146-GY
113-OR
500-BR
142-BU
185-YL-14
129-BU
118-GY
633-BU-14
501-GN
791-PK
235-BK
1
616-BU-14
506-PU
535-BU
235-BK
A758-BR
792-OR
A983-BU
607-PK-14
786-GN
172-GN
GOV POSITION
ENGINE SPEED -
121-YL
ENGINE SPEED +
140-BU
ENGINE COOL TEMP
200-BK-14
200-BK
322-GY
320-OR
327-PK
ENGINE OIL PR
326-PU
200-BK
306-GN
107-WH
2
235-BK-14
THROTTLE
POSITION
SW
7Y-5465
G
A757-GY
PLATFORM
185-YL-14
200-BK-4
200-BK
200-BK
307-OR
185-YL-14
ALTERNATOR
3
235-BK
A763-GY-14
8103-YL/RD
A756-BU
TRAVEL ALARM
B738-BR
HYD OIL TEMP
201-BK
HYD OIL LEVEL SW
3
FF
200-BK-14
103-YL
A769-GY
PLATFORM
A768-BU
2
TRAVEL
ALARM
3T-1444
1
FUEL LEVEL
NOTE B : USE WITH ATCH-REFUELING PUMP
3
PROVISION
AUTO-LUB
SW
E
M,XM
X
M,T M,T
308-YL
PLATFORM
CONVERTER
108-9968
+
A754-GY
D-6
B-3
B751-YL-14
1
615-YL-14
521-YL
PROVISION
AUTO-LUB
200-BK-14
OPERATOR STATION
HEAVY LIFT SW
2
K
A769-GY
B730-OR
235-BK
D-3
B731-WH
A768-BU
122-BU
A447-PK
ENG OIL LEVEL SW
326-PU
200-BK-14
D776-WH
120-YL
118-4255NN
439-YL
103-YL
200-BK
124-GN
B738-BR
185-YL-14
ATCH
9G-4365
168-GN
TT
PP
F-8
118-2198W
1
FF
122-0385 E-2
6C8438
501-GN
A761-PU
124-GN-14
A
7Y-8105
200-BK
B734-GY
B733-YL
U
3
A755-PK
615-YL
4
633-BU-14
A
THIS SCHEMATIC IS FOR THE 375 EXCAVATOR. (7Y-3903)
START AID
START AID SOL
ATCH START
AID SW
7X-6387
UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAUGE.
TO MACHINE STRUCTURE
A/C REFRIGERANT
CONN 1
CONN 2
CONN 3
CONN 4
CONN 5
CONN 6
CONN 10
CONN 9
CONN 8
CONN 7
CONN 11
CONN 16
CONN 15
CONN 14
CONN 12
CONN 13
CONN 19
CONN 18
CONN 17
CONN 21
4
CONN 20
CONN 24
CONN 23
CONN 22
CONN 30
CONN 34
CONN 35
CONN 36
CONN 32
CONN 31
CONN 31
CONN 32
CONN 33
CONN 37
CONN 25
CONN 27
CONN 26
CONN 28
CONN 29
KEY START
ACTION ALARM
D88080
953-GY
548-GY
DATA +
ACTION ALARM
CA
B
ALL DASHED LINES ARE ATTACHMENTS.
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS OFF.
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS ON.
STARTING CIRCUIT.
GAUGE CIRCUIT.
MONITOR CIRCUIT.
WIPER/WASHER CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
ENGINE SHUTDOWN CONTROL CIRCUIT.
START AID CIRCUIT.
ENGINE PUMP CONTROL CIRCUIT.
