Connector Location
Connector Number
Schematic
Location
Machine
Location
CONN 1 J - 11 6E
CONN 2 G - 9 17E
CONN 3 G - 9 18E
CONN 4 G - 8 21E
CONN 5 G - 7 19E
CONN 6 G - 7 25E
CONN 7 C - 6 9F
CONN 8 F - 6 31A
CONN 9 G - 6 1D
CONN 10 F - 5 2A
CONN 11 F - 5 2A
CONN 12 F - 4 7A
CONN 13 H - 3 3D
CONN 14 H - 2 6D
CONN 15 B - 2 3
CONN 16 C - 2 5
CONN 17 J - 2 17D
CONN 18 G - 1 4B
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.
Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
AC Switch Panel D - 6
1A
Sensor Fuel Level A - 5
17
Actuator Governor A - 12
1
Sensor Pump Discharge Press 1 A - 7
2F
Air Heater A -10
2
Sensor Pump Discharge Press 2 A - 7
3F
Alternator C - 12
4
Sensor Speed A - 10
18
Battery J - 12
6
Solenoid A/C Clutch B - 12
19
Block Terminal G - 8
1E
Solenoid Flow Limit A - 8
4F
Breaker Alt. G - 10
2E
Solenoid Hyd. Lock D - 12
1G
Controller E - 9
3E
Solenoid Power Shift Cont. A - 7
5F
Eng. Speed Dial G - 1
1B
Solenoid Swing Brake D - 12
26
Fuse Block H - 10
4E
Solenoid Travel Speed D - 12
3G
Horn B - 2
7
Solenoid Travel Straight D - 12
4G
Lamp Boom C - 1
8
Switch Panel D - 3
13A
Lamp Chassis B - 2
10
Switch Air Cleaner J - 12
24
Lamp Dome E - 6
3A
Switch Backup G - 3
2B
Lighter Cigar D - 1
4A
Switch Coolant Level J - 12
25
Meter Service D - 2
5A
Switch Disconnect G - 11
20E
Monitor F - 2
6A
Switch Eng. Oil Level A -12
26
Motor Starter B - 12
12
Switch Eng. Oil Press. A - 12
27
Motor Washer J - 12
13
Switch Eng. Oil Press. A - 10
60
Motor Wiper E - 2
7A
Switch Hammer Press. J - 1
40
Relay Boom Lamp J - 11
5E
Switch Horn J - 2
1C
Relay Chassis Lamp H - 11
7E
Switch Hyd. Oil Filter A - 6
6F
Relay Heater J - 8
8E
Switch Hyd. Oil Level A - 5
7F
Relay Horn H - 11
9E
Switch Joystick Press. J - 3
5D
Relay Hyd. Lock Sol. H - 11
10E
Switch Neutral Start J - 2
7D
Relay Main J - 7
11E
Switch One Touch Low Idle H - 1
3B
Relay Neutral Start G - 11
12E
Switch Speed Change G - 3
5B
Relay Start Cont. J - 10
13E
Switch Starter G - 1
6B
Relay Starter G - 7
14E
Switch Straight Travel Press. H - 1
8D
Relay Timer J - 10
15E
Switch Travel Left Press. J - 1
9D
Resistor Backup J - 7
16E
Switch Travel Right Press. J - 1
10D
Seat With Seat Heater H - 1
14
Switch Window Limit E - 1
22A
Sender Eng. Coolant Temp. C - 12
15
Unit Air Conditioner F - 5
28
Sender Eng. Coolant Temp. C - 12
59
Unit Heater F - 5
28
Sender Hyd. Oil Temp. A - 6
1F
Unit Heater Control J - 7
22E
Sender Hyd. Oil Temp. A - 6
8F
Unit IND G - 1
7B
Sensor A/C Photo E - 2
10A
Wiper Control D - 2
23A
Sensor AIH Coolant Temp. C - 12
16
Machine locations are repeated for components located close together.
A Inside of Cab
B = Inside of R.H. Console
C = Inside of L.H. Console
D = Backside of Platform
E = Around Relay Panel
F = Inside of Pump Compartment
G = Around Control Valve
Off Machine Switch Specification
Part No. Function Actuate Deactuate Contact Position
Attch.Hammer Pressure
Attch.Travel Pressure 490.00 ± 49.00 kPa 290.00 kPa MIN
Joystick Pressure (71.07 ± 7.11 psi) (42.06 psi MIN)
Travel Left Pressure
Travel Right Pressure
Normally Open167-3466
Resistor and Sender Specifications
Part No. Component Description Resistance (Ohms)¹
20824-25451 @ 0 °C (32 °F)
6134-7496 @ 25 °C (77 °F)
3989-4875 @ 35 °C (95 °F)
4I-5394 Sender: Hydraulic Oil Temperature 2224-2718 @ 50 °C (122 °F)
973-1189 @ 75 °C (167 °F)
475-522 @ 100 °C (212 °F)
221-269 @ 125 °C (257 °F)
102-8016 Resistor: Backup 47.0 ± 2.35
¹ At room temperature unless otherwise noted.
AREA A
3
5
6
10
13
1
22
23
7
4
31
2
7
AREA B
3
4
5
6
1
2
7
AREA C
1
AREA D
3
4
5
6
8
9
10
1
17
7
AREA E
3
4
5
6
8
9
10
11
12
14
15
13
16
1
2
17
18
19
20
21
22
25
7
AREA F
3
4
5
6
8
9
1
2
7
3
4
1
2
4
6
8
10
12
14
15
13
16
D
1
2
17
18
19
24
25
26
27
28
7
59
60
A
4
6
8
10
12
14
15
13
16
B
C
E
1
2
17
18
19
60
24
25
26
27
28
7
F
Machine Harness Connector And Component Locations
59
8
7
G
Code Description of Problems
1301 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 ground
420B 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.
A20d ADEM communication disconnect.
Real Time Error Codes
A AA
1
2
325-PK-14
200-BK-14
T
This indicates that the component does not have a wire connected to ground. It is
grounded by being fastened to the machine.
This indicates that the component has a wire connected to it that is connected to ground.
105-9344
T
Normally open switch that will close with an increase of a specific condition (temp-press-etc.).
The circle indicates that the component has screw terminals and a wire can be disconnected from it.
Pin
Socket
Fuse
Component
Part Number
Pin or Socket
Number
Receptacle
Plug
Wire Gauge
Wire, Cable, or Harness
Assembly Identification
Wire Color
Normally closed switch that will open with an increase of a specific condition.
No circle indicates that the wire cannot be disconnected from the component.
Single Wire
Connector
Circuit Number
Identification
Ground
Connection
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
Circuit Breaker
Symbol
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.
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 Symbols
Electrical Schematic Symbols And Definitions
1
1
2
2
Typical representation of a Sure-Seal
connector. The plug and receptacle
contain both pins and sockets.
Typical representation of a Deutsch
connector. The plug contains all
sockets and the receptacle contains
all pins.
AREA G
Related Electrical Service Manuals
Form Number
Engine/Pump Control:
RENR3418
Title
RENR3615
JULY 2001
320C Excavator
Electrical System
GHA1-UP
HBC1-UP
©
2001 Caterpillar
All Rights Reserved
Printed in U.S.A.
23 145679 8
B
C
112 23
D
E
10
5
11
6710
A
F
G
H
J
12
411 8
A
B
C
D
E
F
G
H
J
9
STRAP AS.
SA
441-OR-18
12
CONSOLE(LH)
OPERATOR STATION
10A
094-2080
RELAY
START CONT
161-3128
BOOM LAMP RELAY
161-3128
CHASSIS LAMP RELAY
ET CONN
161-3128
HORN RELAY
330-YL
5A
1
B
C
D
E
A
F
G
H
J
CA
163-6703
TIMER RELAY
GND
3
4
2
+B
IN
GND
OUT
R
P
S
L
E
161-3128
HYD LOCK SOL RELAY
161-3128
NEUTRAL START RELAY
E
E
E
7N-0718
DISCONNECT SW
E
J-12
E
E
HORN
DOME LAMP/MEMORY
AUX CKT
E/P CONT
A/C BLOWER
TIMER RELAY
KEY SW
A/C
10A
10A
BACKUP
SW PANEL/RADIO
10A
15A
10A
330-YL
15A
330-YL
CIGAR LIGHTER
WASHER/WIPER
330-YL
10A
10A
CHASSIS LAMP
BOOM LAMP
10A
10A
10A
15A
5A
10A
SENSOR
CHASSIS
5A
10A
124-GN-14
200-BK-18
330-YL
3
G
310-PU-18
124-GN-14
405-GY-18
447-PK-18
C
184-RD
442-GY-18
330-YL
175-RD-14
103-RD
308-YL-18
235-BK-18
893-GN-18
892-BR-18
330-YL
442-GY-18
645-RD-18
616-BU
607-PK
447-PK-18
330-YL
403-GN-18
200-BK-18
309-GY-18
K776-GN-18
114-RD
322-GY
189-RD
320-RD-18
405-GY-18
441-OR-18
441-OR-18
405-GY-18
447-PK-18
442-GY-18
330-YL
442-GY-18
112-PU-6
447-PK-18
405-GY-18
441-OR-18
164-0505
SEAT HEATER
ATCH SEAT WITH
G
200-BK-18
1
2
306-GN
154-RD
307-OR
646-RD-18
200-BK-18
7Y-3919
HORN
1
189-RD
151-GN
A588-GN
2
153-2521
BOOM LAMP
ATCH
646-RD-18
WJ
5A
184-RD
WH/BU
YL
BK
101-RD-6
200-BK-18
308-YL-18
235-BK-18
893-GN-18
892-BR-18
646-RD-18
149-RD
616-BU
308-YL
160-PU
149-RD
114-RD
103-RD
105-RD
110-RD
J
175-RD-14
184-RD
A537-PK-18
G
153-2523
LAMP
CHASSIS
A588-GN
151-GN
189-RD
K
K
441-OR-18
307-OR
154-RD
306-GN
320-RD-18
322-GY
114-RD
235-BK-18
405-GY-18
447-PK-18
118-GY
129-BU
442-GY-18
E
330-YL
441-OR-18
169-PK-18
113-OR-18
405-GY-18
160-PU
607-PK 189-RD
189-RD
447-PK-18
616-BU
149-RD
645-RD-18
442-GY-18
330-YL
892-BR-18
893-GN-18
235-BK-18
308-YL-18
SE
109-RD-6
101-RD-6
112-PU-6
WH/YL
L12
607-PK
308-YL
200-BK
189-RD
110-RD
WH/GN
309-GY-18
5A
200-BK-18
403-GN-18
330-YL
322-GY
320-RD-18
306-GN
307-OR
ILLUM
ENG OIL PRESS. SW
11
L
189-RD
151-GN
A588-GN
L
113-OR-18
169-PK-18
+ BATTERY
HEATER RELAY
NC
FUEL LEVEL SENSOR
GND
COOLANT TEMP SENDER
ONE TOUCH LOW IDLE
START CONT RELAY
HYD OIL TEMP SENDER
BACKUP
129-BU
3
118-GY
5
6
2
CONSOLE(RH)
332-BU-18
447-PK-18
105-RD
7
L11
L10
147-PU-18
147-PU-18
189-RD
496-WH-18
200-BK-18
491-PK-18
447-PK-18
200-BK
200-BK-18
607-PK
616-BU
322-GY
200-BK
189-RD
487-OR-18
200-BK-14
200-BK-14
147-PU-18
4
10
175-RD-14
110-RD
105-RD
103-RD
180-GN
169-PK-18
8
113-OR-18
5A
645-RD-18
9
403-GN-18
1
12
(NOTE C)
129-BU
332-BU-18
118-GY
114-RD
MONITOR
167-3613
MONITOR
149-RD
160-PU
200-BK-18
607-PK-18
154-RD
200-BK
124-GN-14
7G-1060
405-GY-18
308-YL
103-RD-18
447-PK-18
330-YL-18
124-GN-14
RELAY PANEL
124-GN-14
441-OR-18
E
442-GY-18
E
9X-8124
RELAY
HEATER
E
441-OR-18
C A
163-6752
442-GY-18
E
TEMP.
REGULATOR
INDICATOR
GND
KEY SW.(START)
RELAY
CHECK TERM.
104-3204
CONT UNIT
HEATER
KEY SW.(ON)
102-8016
RESISTOR
BACKUP
46
47
48
21
18
19
20
17
16
15
12
13
163-6774
CABLE AS.
410-WH-18
403-GN-18
506-PU-18
330-YL-18
165-4026
MAIN RELAY
121-1022
DIODE
442-GY-18
441-OR-18
200-BK-14
129-BU
14
49
50
22
23
645-RD-18
447-PK-18
103-RD-18
304-WH-8
109-RD-8
101-RD-6
24
25
26
27
200-BK-18
308-YL-18
308-YL-18
112-PU-6
28
51
52
29
169-PK-18
30
31
32
53
54
33
34
35
169-PK-18
200-BK-18
36
37
38
403-GN-18
39
306-GN
306-GN
L975-PK-18
200-BK-18
310-PU-18
330-YL-18
A718-PU-18
607-PK
308-YL
A770-PK-18
169-PK-18
A770-PK-18
308-YL
405-GY-18
607-PK-18
200-BK-18
332-BU-18
A770-PK-18
101-RD-4
330-YL
105-RD
310-PU-18
40
41
200-BK-18
306-GN
403-GN-18
200-BK-18
200-BK-18
308-YL
332-BU-18
308-YL-18
403-GN-18
403-GN-18
200-BK-18
310-PU-18
200-BK-18
200-BK-18
310-PU-18
200-BK-18
607-PK-18
310-PU-18
405-GY-18
330-YL
308-YL
308-YL
403-GN-18
200-BK-18
308-YL-18
169-PK-18
A770-PK-18
169-PK-18
330-YL-18
A718-PU-18
200-BK-18
L975-PK-18
42
43
44
45
7
6
5
4
3
8
1
2
112-PU-6
101-RD-6
101-RD-6
9
10
11
442-GY-18
441-OR-18
K906-GN-18
5I-8005
(E/P CONT)
ENG OIL SW
410-WH-18
877-YL-4
447-PK-18
147-PU-18
184-RD
103-RD-18
103-RD
121-1023
BLOCK
10A
M742-PU-18
113-OR-18
405-GY-18
H466-BU-18
607-PK-18
H467-WH-18
200-BK-18
NOTE C: USE WITH CONFIG.1.
310-PU-18
200-BK-18
200-BK-14
332-BU-18
103-RD-18
147-PU-18
646-RD-18
147-PU-18
893-GN-18
877-YL-4
304-WH-8
309-GY-18
109-RD-6
309-GY-18
118-GY
129-BU
147-PU-18
332-BU-18
893-GN-18
147-PU-18
113-OR-18
151-GN
1
307-OR
154-RD
320-RD-18
189-RD
308-YL
147-PU-18
147-PU-18
645-RD-18
103-RD
K849-YL-18
175-RD-14
K850-BR-18
308-YL
K852-GN-18
147-PU-18
A770-PK-18
169-PK-18
A718-PU-18
308-YL
310-PU-18
200-BK-18
308-YL-18
L975-PK-18
M734-BR-18
118-GY
200-BK-18
306-GN
L975-PK-18
A718-PU-18
A588-GN
147-PU-18
189-RD
306-GN
322-GY
200-BK-14
124-GN-14
K776-GN-18
403-GN-18
607-PK
607-PK
616-BU
200-BK-14
892-BR-18
893-GN-18
169-PK-18
A770-PK-18
K851-BU-18
310-PU-18
405-GY-18
235-BK
5I-8005
(MONITOR)
ENG OIL SW
405-GY-18
200-BK-18
-GY-18
200-BK-18
235-BK-18
893-GN-18
892-BR-18
892-BR-18
2
893-GN-18
K776-GN-18
235-BK-18
N769-GY-18
K776-GN-18
200-BK-18
235-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-14
K849-YL-18
K850-BR-18
K776-GN-18
K851-BU-18
K852-GN-186
5
4
3
2
1
405-GY-18
C
441-OR-18
101-RD-4
(NOTE A)
306-GN
15A
235-BK-18
405-GY-18
447-PK-18
109-RD-8
101-RD-6
200-BK-18
403-GN-18
101-RD-6
N769-GY-18
200-BK-14
442-GY-18
200-BK-18
442-GY-18
200-BK-14
447-PK-18
405-GY-18
200-BK-14
441-OR-18
235-BK-18
H HH
147-PU-18
200-BK-18
147-PU-18
(NOTE A)
N769-GY-18
200-BK-14
N769-GY-18
175-RD-14
200-BK-14
200-BK-14
147-PU-18
147-PU-18
M736-BU-18
M736-BU-18
235-BK-18
184-RD
200-BK-18
200-BK
L23
235-BK-18
200-BK-14
200-BK-14
147-PU-18
147-PU-18
147-PU-18
147-PU-18
N769-GY-18
N769-GY-18
(NOTE B)
235-BK-18
308-YL-18
-GY-18
892-BR-18
892-BR-18
332-BU-18
310-PU-18
147-PU-18
200-BK-18
200-BK-18
H-3
441-OR-18
892-BR-18
893-GN-18
147-PU-18
310-PU-18
310-PU-18
10A
310-PU-18
10A
2
1
170-6929 J-12
125-1302
START RELAY
M736-BU-18
147-PU-18
332-BU-18
147-PU-18
163-6763F J-2
332-BU-18
G
121-1022
DIODE
332-BU-18
147-PU-18
5A
5A
CAB FAN
5A
5A
10A
10A 10A
15A
10A
310-PU-18
332-BU-18
607-PK
892-BR-18
893-GN-18
147-PU-18
147-PU-18
892-BR-18
893-GN-18
201-BK-18
332-BU-18
147-PU-18
147-PU-18
607-PK
893-GN-18
892-BR-18
169-PK-18
169-PK-18
169-PK-18
169-PK-18
332-BU-18
103-RD
103-RD
892-BR-18
103-RD
310-PU-18
893-GN-18
607-PK
892-BR-18
892-BR-18
892-BR-18
892-BR-18
892-BR-18
893-GN-18
893-GN-18
893-GN-18
893-GN-18
M M C C C
200-BK-18
442-GY-18
447-PK-18
893-GN-18
892-BR-18
169-PK-18
332-BU-18
310-PU-18
L1
607-PK
442-GY-18
103-RD
200-BK-18
447-PK-18
200-BK-18
J-3
SC 167-3583
SE 132-1806
G-11
SE
SC
SC
B-10
E
E
E
A
H
H
169-PK-18
892-BR-18
893-GN-18
201-BK-18
201-BK-18
H H
161-3779
A/C UNIT
ATCH
E
5A
164-0490
HEATER UNIT
ATCH
200-BK-14
175-RD-14
G
7
6
1
8
3
103-RD
201-BK-18
4
5
2
C
C
200-BK-14
A
111-9916
CONT SOL
POWER SHIFT
169-PK-18
2
B
5
4
G
3
K776-GN-18
1
6
893-GN-18
121-1022
DIODE
892-BR-18
607-PK
10A
(NOTE B)
R/L
R
BR
E554-PK-18
B
235-BK-18
200-BK
197-4276
197-4444H F-5
(NOTE C)
171-0188
SOL
FLOW LIMIT
ATCH(NOTE B)
G-1J 170-6828
163-6750K B-2
C-2
200-BK-18
157-3182
PRESS. SENSOR1
PUMP DISCHARGE
157-3182
PRESS. SENSOR2
PUMP DISCHARGE
C538-OR-18
C537-GN-18
1
2
2
1
+B
GROUND
SIGNAL
892-BR-18
YL-18
BR-18
BK-18
893-GN-18
B
C
L 116-0227
183-0998M
5A
A
A
C
169-PK-18
320-RD-18
320-RD-18
320-RD-18
320-RD-18
310-PU-18
310-PU-18
160-PU
607-PK
607-PK
607-PK
607-PK
201-BK-18
A-8
L2
F-6N 197-4420
L3
L7
L7
L18
L19
7Y-3920
HORN
K776-GN-18
200-BK-18
L20 L20
L21L21L21
204-1630P F-6
G-7R 204-1629
442-GY-18
200-BK-18
K
119-PK-18
200-BK-18200-BK-18
C
405-GY-18
K906-GN-18
119-PK-18 119-PK-18
607-PK
646-RD-18
645-RD-18
B
175-RD-14
119-PK-18
235-BK
183-1000
FUSE BASE
119-PK-18
R
P
15A 113-8491
10A 113-8490
5A 141-2759
FUSE
°T
163-6700
SENSOR
FUEL LEVEL
2
1
°T
C
GROUND
SIGNAL
1
2
2
1
170-9376
LEVEL SW
HYD OIL
4I-5394
(E/P CONT)
TEMP SENDER
HYD OIL
116-3660
FILTER SW
HYD OIL
5I-7578
(MONITOR)
SENDER
COOLANT TEMP
C
235-BK-18
1
2
124-GN-14
124-GN-14
129-BU
118-GY
BK-18
BR-18
105-RD
YL-18
308-YL
151-GN
307-OR
154-RD
607-PK
K776-GN-18
K776-GN-18
113-OR-18
200-BK-18
103-RD
169-PK-18
447-PK-18
442-GY-18
113-OR-18
189-RD
SIGNAL
GROUND
607-PK
607-PK
607-PK
235-BK-18
441-OR-18
200-BK-18
118-GY
119-PK-18
645-RD-18
129-BU
646-RD-18
200-BK-18
113-OR-18
103-RD
MOTOR
154-RD
151-GN
189-RD
105-RD
200-BK-18
200-BK-18
P
A770-PK-18
K776-GN-18
307-OR
607-PK
607-PK
607-PK
+B
2
1
E554-PK-18
H475-BU-18
H474-GN-18
H476-WH-18
K849-YL-18
200-BK-18
P
N
M736-BU-18
A755-PK-18
F774-WH-18
F773-OR-18
K907-BU-18
L969-WH-18
L968-OR-18
A769-GY-18
A768-BU-18
180-5316
FAN MOTOR
ATCH
1
A756-BU-18
A757-GY-18
A758-BR-18
L972-BU-18
410-WH-18
M741-GY-18
H466-BU-18
H467-WH-18
2
GN
BK
M741-GY-18
M742-PU-18
M734-BR-18
K776-GN-18
403-GN-18
403-GN-18
M739-YL-18
506-PU-18
607-PK
607-PK
607-PK
607-PK
200-BK-18
200-BK-18
119-PK-18
200-BK-18
M739-YL-18
607-PK
N
6T-7337
METER
SERVICE
H H
+
-
506-PU-18
403-GN-18
K849-YL-18L972-BU-18
A758-BR-18
A757-GY-18
A756-BU-18
607-PK
200-BK-18
308-YL
A768-BU-18
A769-GY-18
L968-OR-18
L969-WH-18
200-BK-18
H465-GN-18
309-GY-18
M741-GY-18
H465-GN-18
H466-BU-18
M734-BR-18
H467-WH-18
L21
200-BK-18
M736-BU-18
H474-GN-18
H475-BU-18
K907-BU-18
F773-OR-18
F774-WH-18
A755-PK-18
410-WH-18
K906-GN-18
H465-GN-18
L21
200-BK-18
441-OR-18
200-BK
E554-PK-18
200-BK-18
441-OR-18
1
2
A
OPERATOR STATION
163-6785
LIMIT SW
NEUTRAL START
A
A
PLATFORM
A
2
1
2
1
200-BK-18
167-3466
PRESS. SW
JOYSTICK
2
1
167-3466
PRESS. SW
TRAVEL RIGHT
184-RD
200-BK-18
A
A
167-3466
PRESS. SW
TRAVEL LEFT
167-3466 (NOTE C)
PRESS. SW
ATCH HAMMER
7G-1060
GROUND STRAP
CHASSIS
OPERATOR STATION
200-BK-18
200-BK-14
200-BK-14
1
2
ST
ON
OFF
B
S
C
R
L5
106-0107
POS SW
THROTTLE
9G-7641
KEY SW
A768-BU-18
200-BK-18
235-BK-18
COM
S1
S2
H475-BU-18
200-BK-14
442-GY-18
200-BK-18
405-GY-18
441-OR-18
235-BK-18
200-BK-18
447-PK-18
L19
H474-GN-18
S3
235-BK-18
K849-YL-18H473-BR-18
235-BK-18
H473-BR-18
A
S4
128-2134
LOW IDLE SW
ONE TOUCH
163-6711
GOV SW
BACKUP
163-6710
EPR VALVE SW
BACKUP
B
L. CHASSIS
C
GND
G G
163-6702
IND UNIT
2
3
4
5
A
6
200-BK-18
BK-18
WH-18
RD-18
L972-BU-18
A758-BR-18
A757-GY-18
A756-BU-18
307-OR
308-YL
105-RD
200-BK-14
235-BK-18
OPERATOR STATION
L19
A768-BU-18
A769-GY-18
L968-OR-18
154-RD
1
8
7
L21
184-RD
184-RD
184-RD
184-RD
184-RD
169-PK-18
169-PK-18
L969-WH-18
169-PK-18
200-BK-18
A770-PK-18
113-OR-18
113-OR-18
200-BK
124-GN-14
124-GN-14
9
322-GY
K907-BU-18
A
10
11
12
7
6
5
4
151-GN
3
189-RD
8
F773-OR-18
F774-WH-18
A755-PK-18
M736-BU-18 235-BK-18
235-BK-18
235-BK-18
235-BK-18
H474-GN-18
H475-BU-18
1
2
616-BU
607-PK
200-BK
L21
200-BK-18
442-GY-18
200-BK-14
189-RD
151-GN
154-RD
K849-YL-18
H475-BU-18
H475-BU-18
H474-GN-18
H474-GN-18
200-BK-18
200-BK-18
9
K906-GN-18
308-YL
410-WH-18
403-GN-18
103-RD
506-PU-18
118-GY
M742-PU-18
H465-GN-18
M734-BR-18
645-RD-18
C
129-BU
176-2005
HEATER SW PANEL
ATCH
200-BK-14
200-BK-14
118-GY
646-RD-18
200-BK-14
103-RD
646-RD-18
308-YL
175-RD-14
200-BK-14
129-BU
645-RD-18
308-YL
H467-WH-18
M734-BR-18
H466-BU-18
506-PU-18
309-GY-18
410-WH-18
200-BK-18
A769-GY-18
H465-GN-18
H465-GN-18
H466-BU-18
M738-OR-18
E554-PK-18
200-BK-14
175-RD-14
200-BK-14
E554-PK-18
1
2
C
C
ALT
R
P
121-1491
BRAKE SOL
SWING
121-1491
SOL
TRAVEL SPEED
616-BU
200-BK
L13
322-GY
322-GY
322-GY
200-BK
235-BK
200-BK
235-BK-18
616-BU
M740-PK-18
200-BK
200-BK
235-BK
235-BK
235-BK
200-BK
200-BK
200-BK
235-BK
200-BK
496-WH-18
235-BK-18
235-BK
491-PK-18
5A
BK
235-BK-18
235-BK-18
K904-GN-18
RD
M737-WH-18
BK
YL
1
2
200-BK-18
T967-YL-18
A755-PK-18
F774-WH-18
F773-OR-18
K907-BU-18
M736-BU-18
607-PK
235-BK-18
H465-GN-18
H465-GN-18
K904-GN-18
200-BK
487-OR-18
C
322-GY
T967-YL-18
496-WH-18
A769-GY-18
A768-BU-18
491-PK-18
487-OR-18
A768-BU-18
A769-GY-18
T967-YL-18
K904-GN-18
C
M738-OR-18
M737-WH-18
C C
A769-GY-18
A768-BU-18
3
4
128-2134
HORN SW
2
F
F
320-RD-18
320-RD-18 200-BK-18
200-BK-18
10
G
11
G
G
G
G
G
G
G
12
607-PK
150-OR-18
235-BK-18
150-OR-18
780-PU-18
200-BK-18
780-PU-18
200-BK-18
6
235-BK-18
L972-BU-18
235-BK-18
200-BK-18
235-BK-18
308-YL
1
6
200-BK-14
2
3
4
5
5
L17
A755-PK-18
A756-BU-18
L17
A757-GY-18
A758-BR-18
A769-GY-18
169-PK-18
607-PK
F774-WH-18
F773-OR-18169-PK-18
A768-BU-18
K906-GN-18
K907-BU-18
A770-PK-18
L969-WH-18
L968-OR-18
235-BK-18
200-BK-18
200-BK-18
A537-PK-18
A537-PK-18
326-RD
169-PK-18
169-PK-18
169-PK-18
307-OR
M736-BU-18
M736-BU-18
M736-BU-18
A755-PK-18
L968-OR-18
L969-WH-18
A770-PK-18
K907-BU-18
105-RD
M734-BR-18
M742-PU-18
H465-GN-18
M742-PU-18
H465-GN-18
M741-GY-18
M741-GY-18
K906-GN-18
403-GN-18
A768-BU-18
200-BK-14
A769-GY-18
646-RD-18
F773-OR-18
F774-WH-18
200-BK-14
235-BK-18
L972-BU-18
A758-BR-18
A757-GY-18
A756-BU-18
A755-PK-18
176-1986
DOME LAMP
L969-WH-18
L968-OR-18
A769-GY-18
A768-BU-18
308-YL
A756-BU-18
A757-GY-18
A758-BR-18
L972-BU-18
K849-YL-18
506-PU-18
105-RD
307-OR
326-RD
308-YL
E554-PK-18
200-BK-14
200-BK-18
200-BK-14
200-BK-6
3
4
5
6
1
8
7
9
10
11
12
200-BK-14
F774-WH-18
F773-OR-18
K907-BU-18
A770-PK-18
L969-WH-18
L968-OR-18
A769-GY-18
A768-BU-18
K906-GN-18
607-PK
105-RD
308-YL
326-RD
307-OR
A756-BU-18
A757-GY-18
A758-BR-18
L972-BU-18
200-BK-18
235-BK-18
235-BK-18
235-BK-18
235-BK-18
235-BK-18
GOLD TERMINAL
L18
189-RD
892-BR-18
200-BK-14
893-GN-18
607-PK
616-BU
403-GN-18
309-GY-18
A718-PU-18
L975-PK-18
L18
HARNESS AS.
LOCPART NO.IDENT
DESIGNATION
CIRCUIT GROUPING#L
COMPONENT
ATCH WIRE, CABLE,
CIRCUIT NOT CONNECTED
CIRCUIT CONNECTED
200-BK-14
200-BK-14
200-BK-18
200-BK-14
200-BK-14
4I-5394
(MONITOR)
TEMP SENDER
HYD OIL
C
°T
BLUE
GREEN
BU
GN
RD
WH
OR
101-RD-6
60A
9S-0174
ALT BREAKER
WJ WC
H476-WH-18
A588-GN
322-GY
7
8
9
10
11
12
5
4
3
1
2
6
2
3
4
5
6
1
8
7
9
10
11
12
M740-PK-18
M740-PK-18
H466-BU-18
B
E
L
H466-BU-18
189-RD
103-RD
103-RD
103-RD
103-RD
200-BK
L3
L23
L2L2
103-RD
L23
L2
L3
L5
L4
L5
13
14
15
16
17
18
19
20
21
2
3
4
5
6
1
8
7
9
10
11
2
3
4
5
6
1
8
12
7
9
10
154-RD
307-OR
11
5I-7578
(E/P CONT)
SENDER
COOLANT TEMP
°T
(50A)
5I-8085
ALTERNATOR
12
12
11
CA
L6
10
9
7
8
1
6
5
4
3
2
18
17
16
15
14
13
A
151-GN
308-YL
105-RD
118-GY
129-BU
175-RD-14
645-RD-18
646-RD-18
L10
L11
A
L12
235-BK-18
3
CHASSIS
ESS
7
8
C
C
4
5
C
GND
C
MOTOR
(NOTE D)
176-1895
A/C CLUTCH SOL
ATCH
178-6540
PICKUP
ENG SPEED
1
2
125-2988
MOTOR
STARTER
G S
MTRBAT
2
1
170-9376
LEVEL SW
ENG OIL
KEY
157-3177
ACTUATOR
ENG GOV
6
DECEL
2
1
ACCEL
+B
F/B
GND
5I-7746
AIR HEATER
1
2
170-9486
TEMP SENSOR
AIH COOLANT
°T
ENG
E554-PK-18
M738-OR-18
M737-WH-18
M739-YL-18
K904-GN-18
T967-YL-18
A769-GY-18
A768-BU-18
200-BK
487-OR-18
200-BK
322-GY
616-BU
607-PK
235-BK-18
235-BK-18
491-PK-18
496-WH-18
788-YL-18
A762-PU-18
877-YL-4
189-RD
788-YL-18
A762-PU-18
877-YL-4
200-BK-18
200-BK-18
1 TURN PER 25MM.
NOTE A: WIRE PAIRS MUST BE TWISTED AT LEAST
(NOTE A)
235-BK-18
235-BK-18
235-BK-18
109-RD-6
309-GY-18
A761-PU-18
189-RD
200-BK-18
A761-PU-18
F773-OR-18
F774-WH-18
308-YL
M736-BU-18
C468-BU-18
200-BK-18
235-BK-18
235-BK-18
304-WH-8
101-RD-4
200-BK-18
200-BK-6
200-BK-18
403-GN-18
109-RD-6
200-BK-18
1
200-BK-18
235-BK-18
A718-PU-18
492-GY-18
200-BK-18
M736-BU-18
308-YL
492-GY-18
A718-PU-18
877-YL-4
492-GY-18
200-BK-6 109-RD-6
309-GY-18
101-RD-4
200-BK-6
A762-PU-18
788-YL-18
RD-00
304-WH-8
200-BK-18
A718-PU-18
L16 L16
F774-WH-18
F773-OR-18
101-RD-4
304-WH-8
235-BK-18
C468-BU-18
WH
BK
A761-PU-18
200-BK-18
M736-BU-18
308-YL
F774-WH-18
C468-BU-18
F773-OR-18
A761-PU-18
189-RD
877-YL-4
A762-PU-18
788-YL-18
189-RD
F773-OR-18
F774-WH-18
308-YL
M736-BU-18
C468-BU-18
E554-PK-18
E554-PK-18
235-BK-18
304-WH-8
101-RD-4
E554-PK-18
403-GN-18
403-GN-18
109-RD-6
A718-PU-18
492-GY-18
235-BK-18
235-BK-18
121-1491
SOL
HYD LOCK
121-1491
SOL
TRAVEL STRAIGHT
1
2
2
1
1
2
L13 L13
L1
L16
L14 L14
L15
L14
L17
L18
L1
L19
L17
150-OR-18
780-PU-18
157-3165
ENG/PUMP CONT
CHASSIS
235-BK-18
E554-PK-18
430-BU-18
L3
412-BU-18
L975-PK-18
K849-YL-18
235-BK-18
309-GY-18
309-GY-18
893-GN-18
E554-PK-18
893-GN-18
H
892-BR-18
K906-GN-18
410-WH-18
A755-PK-18
F774-WH-18
F773-OR-18
K907-BU-18
235-BK-18
763-BU-18
H475-BU-18
H476-WH-18
H474-GN-18
M736-BU-18
CAB
235-BK-18
M734-BR-18
H467-WH-18
H466-BU-18
M742-PU-18
H465-GN-18
M741-GY-18
T967-YL-18
L969-WH-18
L968-OR-18
A769-GY-18
A768-BU-18
308-YL
A756-BU-18
A757-GY-18
A758-BR-18
L972-BU-18
506-PU-18
K906-GN-18
763-BU-18
235-BK-18
M739-YL-18
H467-WH-18
M741-GY-18
H465-GN-18
M742-PU-18
H466-BU-18
M734-BR-18
H476-WH-18
H475-BU-18
H474-GN-18
H474-GN-18
H475-BU-18
A588-GN
308-YL
308-YL
308-YL
TRAVEL STRAIGHT PRESS SW
CREEPER TRAVEL FUNCTION SW
FREE SWING SW
M736-BU-18
200-BK-18
M736-BU-18
A584-BU-18
235-BK-18
235-BK-18
410-WH-18
235-BK
L968-OR-18
A761-PU-18
L972-BU-18
L969-WH-18
A755-PK-18
A756-BU-18
A757-GY-18
788-YL-18
A762-PU-18
412-BU-18
430-BU-18
492-GY-18
491-PK-18
A758-BR-18
496-WH-18
L975-PK-18
C468-BU-18
K907-BU-18
487-OR-18
K904-GN-18
308-YL
235-BK-18
235-BK-18
L3L3L3L3L3
L3
L11
L12
L8L8
L7 L7
K904-GN-18
L8
L11
L10
235-BK
235-BK
ATCH STEM3 SWING CANCEL
M736-BU-18
877-YL-4
304-WH-8
109-RD-6
101-RD-4
189-RD
892-BR-18
607-PK
616-BU
309-GY-18
A718-PU-18
L975-PK-18
A588-GN
322-GY
T967-YL-18
235-BK
167-3583
GROUND STRAP
CE
E
L15
412-BU-18
430-BU-18
L972-BU-18
A758-BR-18
A757-GY-18
A756-BU-18
308-YL
L968-OR-18
L969-WH-18
M741-GY-18
M742-PU-18
H466-BU-18
H467-WH-18
M734-BR-18
OVER LOAD ALARM CANCEL SW
PUMP DISCHARGE(1) PRESS SENSOR
ANALOG SENSOR RETURN
H474-GN-18
H476-WH-18
H475-BU-18
K907-BU-18
A755-PK-18
410-WH-18
892-BR-18
893-GN-18
893-GN-18
892-BR-18
NOTE B: NOT USED ON THIS MACHINE.
308-YL
A768-BU-18
A769-GY-18
F773-OR-18
F774-WH-18
K906-GN-18
506-PU-18
235-BK-18
322-GY
A588-GN
A718-PU-18
309-GY-18
403-GN-18
309-GY-18
616-BU
607-PK
189-RD
101-RD-4
109-RD-6
304-WH-8
877-YL-4
T967-YL-18
K904-GN-18
487-OR-18
C468-BU-18
496-WH-18
491-PK-18
492-GY-18
A762-PU-18
788-YL-18
1
A761-PU-18
M740-PK-18
M737-WH-18
M738-OR-18
M739-YL-18
763-BU-18
763-BU-18
M739-YL-18
M738-OR-18
M737-WH-18
M737-WH-18
2
A761-PU-18
788-YL-18
A762-PU-18
492-GY-18
491-PK-18
496-WH-18
C468-BU-18
487-OR-18
K904-GN-18
T967-YL-18
A584-BU-18
K906-GN-18
F774-WH-18
F773-OR-18
200-BK-14
A769-GY-18
A768-BU-18
235-BK-18
235-BK-18
235-BK-18
322-GY
A588-GN
A718-PU-18
403-GN-18
616-BU
607-PK
189-RD
101-RD-4
109-RD-6
304-WH-8
877-YL-4
235-BK-18
200-BK-18
200-BK-18
3
4 5
6
7 8
9
10 11
200-BK
200-BK
12
893-GN-18
892-BR-18
M739-YL-18
M738-OR-18
200-BK
M738-OR-18
M737-WH-18
E
200-BK-14
H466-BU-18
M
11
L15L15
K904-GN-18
T967-YL-18
E554-PK-18
A769-GY-18
A768-BU-18
487-OR-18
491-PK-18
496-WH-18
E
CA CC CE
C
C
POS
NEG
NEG
POS
3T-5760
BATTERY
096-0744
LEVEL SW
COOLANT
154-0498
SW
AIR CLEANER
MOTOR
200-BK-18
7T-8890
WASHER
C
235-BK-18
412-BU-18
235-BK-18
235-BK-18
430-BU-18
BK-00RD-00
RD-00
235-BK-18
169-PK-18
169-PK-18
A770-PK-18
200-BK-18
506-PU-18
430-BU-18
412-BU-18
506-PU-18
235-BK-18
235-BK-18
235-BK-18
H473-BR-18
2
1
A
167-3466 (NOTE B)
PRESS. SW
ATCH STRAIGHT TRAVEL
235-BK-18
235-BK-18
235-BK-18
235-BK-18
235-BK-18
235-BK-18
235-BK-18
235-BK-18
235-BK-18
H473-BR-18
H473-BR-18
H473-BR-18
H473-BR-18
H473-BR-18
H473-BR-18
H473-BR-18
309-GY-18
103-RD
103-RD
200-BK-18
200-BK
235-BK-18
235-BK-18
235-BK-18
235-BK-18
235-BK-18
235-BK-18
200-BK-18
235-BK-18
235-BK-18
235-BK-18
NOTE D: NOT USE WITH HEATER UNIT.
235-BK-18
200-BK-18
2
L13 L13
403-GN-18
403-GN-18
403-GN-18
403-GN-18
403-GN-18
200-BK-14
ALT REGULATOR
309-GY-18
113-OR-18
645-RD-18
H466-BU-18
H467-WH-18
200-BK-14
M737-WH-18
M738-OR-18
506-PU-18
118-GY
M737-WH-18
M741-GY-18
M742-PU-18
M741-GY-18
H466-BU-18
M734-BR-18
H467-WH-18
M738-OR-18
200-BK
M738-OR-18
M737-WH-18
129-BU
H466-BU-18
H467-WH-18
H467-WH-18
H467-WH-18
H467-WH-18
646-RD-18
M739-YL-18
M741-GY-18
M742-PU-18
H476-WH-18
H467-WH-18
200-BK-14
M739-YL-18
200-BK-14
M739-YL-18
M739-YL-18
H465-GN-18
H465-GN-18
M742-PU-18
M742-PU-18 M742-PU-18
M742-PU-18
M741-GY-18
M741-GY-18
(NOTE A)
M741-GY-18
H476-WH-18
H476-WH-18
763-BU-18
H476-WH-18
A584-BU-18
2
1M740-PK-18
9W-0335
LIGHTER
CIGAR
1
2
MOTOR
13
12
167-7083
SENSOR
ATCH A/C PHOTO
163-6701
SWITCH PANEL
10
7
H
155-7042
WIPER CONT
161-3667
MOTOR
WIPER
GND
W. INT (3)
W. LOW
WASH
L. BOOM
L. CHASSIS
+B
6
H
117-6306
WINDOW LIMIT SW
CAB
ALARM CANCEL SW
ALARM CANCEL IND
5
AEC MODE SW
8
AEC MODE IND
11
4
9
3
157-3210
A/C SW PANEL
ATCH
INT (6)
W. CCW
W. CW
REV
STOP
GND
WASH
ACC
WA+
LOW
WIPER CUT
RISE. S
INT (3)
2
1
9
TRAVEL MODE IND 2
20
TRAVEL MODE SW
TRAVEL MODE IND 1 10
14
8
13
7
11
12
5
4
3
6
15
H
W. INT (6)
H
16
17
18
19
HH
235-BK-18
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK-18
200-BK
200-BK-14
200-BK
590-GY-18
113-OR-18
200-BK-18
129-BU
A579-OR
C537-GN-18
C538-OR-18
200-BK
530-OR-18
A580-BR
501-GN-18
A586-OR-18
A581-GN
A582-PU
200-BK-14
200-BK-18
A584-BU-18
L11
200-BK-14
A586-OR-18
530-OR-18
A579-OR
646-RD-18
M734-BR-18
118-GY
506-PU-18
A580-BR
501-GN-18
A581-GN
A582-PU
A584-BU-18
590-GY-18
645-RD-18
200-BK
235-BK-18
645-RD-18
M734-BR-18
646-RD-18
200-BK-18
113-OR-18
590-GY-18
Y/W
Y/G
A586-OR-18
501-GN-18
200-BK
530-OR-18
590-GY-18
A584-BU-18
L11
L12
A582-PU
L12
A581-GN
501-GN-18
A580-BR
506-PU-18
118-GY
A579-OR
530-OR-18
A586-OR-18
200-BK-18
129-BU
200-BK
200-BK
200-BK-18
200-BK-18
200-BK
C538-OR-18
C537-GN-18
A582-PU
A581-GN
A580-BR
200-BK
A579-OR
200-BK
C537-GN-18
C538-OR-18
118-GY
506-PU-18
A584-BU-18
129-BU
113-OR-18
646-RD-18
M734-BR-18
645-RD-18
M736-BU-18
M736-BU-18
M736-BU-18
YL
PK
BK
OR SCREW TERMINAL
BLADE, SPADE, RING,
OF COMPONENT
CONNECTION TO SURFACE
INTERNAL ELECTRICAL
TO MACHINE STRUCTURE
ELECTRICAL CONNECTION
CONNECTOR
SYMBOL DESCRIPTION
BROWN
PURPLE
GRAY
BLACK
COLORABBREV
PINK
YELLOW
ORANGE
WHITE
RED
BR
PU
GY
THIS SCHEMATIC IS FOR THE 320C EXCAVATOR 197- 4433 HE00
OPERABLE MACHINE WITH THE KET ON A AND ENGINE OFF.
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
197-4448 G-6A
UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAUGE.
112-PU-6
101-RD-6
109-RD-6
M736-BU-18
OPTION VOLTAGE SW (1)
TRAVEL STRAIGHT SOL
HEATER RELAY/STARTER RELAY
L11
L12
L12
L11 L11
OPTION CONTROL PRV
FAN MOTOR CONTROL PRV
PRV RETURN (4)
PRV RETURN (3)
TRAVEL SPEED CHANGE SOL
ACTION ALARM
ATCH STEM2 SWING CANCEL
CAT DATA LINK (-)
CAT DATA LINK (+)
JOYSTICK PRESS SW
TRAVEL LEFT PRESS SW
TRAVEL RIGHT PRESS SW
OPTION PWM IN (1)
BACKUP SW
L8
L7
TRAVEL MODE SW
AEC MODE SW
L7
L10 L10
O.L.W.D. PRESS SENSOR
L10
L22 L22
L6 L6
L5L5
L4 L4
L6
L5
L4
L9L9
PUMP DISCHARGE(2) PRESS SENSOR
FUEL SECONDARY FILTER PLUGGED
A
A A
FUEL PRIMARY FILTER PLUGGED
+12V SUPPLY
TRAVEL ALARM CANCEL SW
THROTTLE POSITION 1
THROTTLE POSITION 2
THROTTLE POSITION 3
THROTTLE POSITION 4
PRV RETURN (1)
COOLANT LEVEL SW
SPEED SENSOR (+)
CC
C
C
C
C
C
C
235-BK
C
C C
E E
C C C C
E
E
CC
CE G-11163-6775
WIRE AS.
197-4456 G-6C
WA 163-6754
163-6755WC
WE
A
163-6757
111-4829
SPEED SENSOR (-)
WF
WG 163-6753
163-6780WH
WJ G-10170-9478
G-8
G-8
G-8
G-8CF
CG G-8163-6751
G-8
H-11
J-7
PRV RETURN (2)
PRIMARY NFC PRESS PRV
RELAY PANELRELAY PANEL
CF
ENG OIL LEVEL SW
FUEL LEVEL
HYD OIL LEVEL SW
AIR CLEANER PLUGGED
HYD OIL TEMP SENSOR
WATER SEPARATOR LEVEL SW
COOLANT TEMP SENSOR
ALTERNATOR R TERM.
TRAVEL ALARM
CG
CG CF
ENG OIL PRESS SW
WA
WC
WE
WF
SWING BRAKE CANCEL SOL
POWER SHIFT CONTROL PRV
WG
WH
WG
WH
WA
WFWE
197-4452 G-8E
(NOTE A)
SPECIAL FILTER PLUGGED
ATCH STEM1 SWING CANCEL
CAPSULE FILTER PLUGGED
+B
AIR HEATER CONTROLLER
FINE SWING SW
FLOW LIMIT PRESS PRV
TRAVEL MODE IND
OPTION SW
M734-BR-18
KEY SW ON
OPTION CONTROL PRV
ONE TOUCH LOW IDLE SW
GND
M736-BU-18
410-WH-18
892-BR-18
893-GN-18
L968-OR-18
OPTION SW
A761-PU-18
AEC MODE IND
L972-BU-18
TRAVEL ALARM CANCEL IND
GOVERNOR FEEDBACK
SENSOR RET
T967-YL-18
L969-WH-18
A755-PK-18
A756-BU-18
A757-GY-18
788-YL-18
A762-PU-18
412-BU-18
430-BU-18
492-GY-18
491-PK-18
A758-BR-18
496-WH-18
L975-PK-18
C468-BU-18
K907-BU-18
487-OR-18
K904-GN-18
GND
308-YL
K849-YL-18
3
21
5
6
22
23
54
53
52
51
50
49
48
K849-YL-18
47
46
K849-YL-18
45
44
43
42
K849-YL-18
41
40
39
38
+B
K849-YL-18
GOVERNOR COMMAND
ATCH STEM4 SWING CANCEL
AUTO LUB FAILURE
SWITCH RETURN
K849-YL-18
37
36
35
2
34
24
7
4
25
33
20
32
26
31
30
10
19
18
27
28
29
8
9
17
16
15
14
13
12
1
1
B
C
A
M739-YL-18
M739-YL-18
M739-YL-18
M737-WH-18
M738-OR-18
M739-YL-18
C
403-GN-18
235-BK
235-BK
184-RD
184-RD
M736-BU-18
12
13
14
15
16
17
18
19
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
9
8
29
28
27
10
26
20
25
4
7
24
2
23
22
6
5
21
3
11
H
306-GN
330-YL
E
330-YL
330-YL
616-BU
200-BK
CONN. 1
CONN. 2
CONN. 3
CONN. 4
CONN. 5
CONN. 6
CONN. 7
CONN. 8
CONN. 9
CONN. 11
CONN.12
CONN. 13
CONN. 14
CONN. 16
CONN. 15
CONN. 18
CONN. 17
CONN. 10
Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Distribution Circuits Accessory Circuits cont.
101 RD Bat (+) 501 GN Wiper - Front (Low)
103 RD Dome Lamp / Memory 506 PU Washer - Front
105 RD Key Start Sw 530 OR Washer Right
109 RD Alt Output (+) Term. 590 GY Wiper Sw To Intermittent Module
110 RD Timer Relay A537 PK Seat Heater
112 PU Main Power Rly Output A579 OR Wiper Motor +
113 OR Opr Mon Panel B (+) Switched A580 BR Wiper Motor
114 RD Warning Horn (Forward) A581 GN Wiper Motor Raise
118 GY Wiper / Washer A582 PU Wiper Motor Stop
119 PK Fan Motor/ Cab Fan A584 BU Window Limit SW To Wiper Cont
124 GN A/C A586 OR Wiper SW To Wiper Cont
129 BU Cigar Lighter A588 GN Safety Sol Relay To Sol
147 PU Att. Fine Swing Control Sw. C537 GN A/C Photo Sensor (+ Sig)
149 RD Boom Lamp C538 OR A/C Photo Sensor (- Sig)
150 RD Bat (+) E554 PK A/C Clutch Solenoid
151 GN Hyd. Lock Cancel Sw. Lighting Circuits
154 RD Neutral Start Limit Sw. to Neutral Start Relay 607 PK Flood Lamps - Front
160 PU Chassis Lamp 616 BU Boom Flood Lamp
169 PK Backup/Monitor Control 645 RD Boom Lamp Relay
175 RD A/C Blower 646 RD Chassis Lamp Relay
180 GN Aux Ckt Control Circuits
184 RD Eng/Pump Control 763 BU Torque Converter Sw
189 RD Start Aid Ckt. 780 PU Atch Quick Coupler
Ground Circuits 788 YL Engine Speed (+)
200 BK Main Chassis A718 PU Start Aid Coolant Sensor Signal
201
BK
Operator Monitor Return
A755
PK
Throttle Sw #1
235 BK Electronic Pump Ctrl Gnd A756 BU Throttle Sw #2
Basic Machine Circuits A757 GY Throttle Sw #3
304 WH Starter Relay No. 1 Output A758 BR Throttle Sw #4
306 GN Starter Relay Coil To Neut Start SW Or A761 PU Electronic Pump Cont Throttle Ground
307 OR Key Start SW To Neutral Start SW Or A762 PU Elec Pump Cont Eng Speed Ground
308 YL Main Power Relay Coil A768 BU Pump Control Valve #1 (+)
309 GY Alternator Regulator A769 GY Pump Control Valve #2 (-)
310 PU Start Aid SW To Start Aid Sol A770 PK Elec Pump Cont Bypass Sw
320 RD Horn Relay Coil To SW F773 OR Governor Accel
322 GY Warning Horn (Forward) F774 WH Governor Decel
326 RD Key SW "C" Term K776 GN Start Cont Relay
330 YL Neutral Start Relay Coil M734 BR Travel Mode SW
332 BU Monitor Battery M736 BU Governor Comand/Backup SW
Monitoring Circuits M737 WH Flow Limit Pressure PRV
403 GN Alternator (R) Term. M738 OR Primary NFC Pressure PRV
405 GY Opr Mon Oil Press. (Low Setting) M739 YL PRV Return (2)
410 WH Action Alarm M740 PK Travel Straight Solenoid
412 BU Operator Monitor Cool Flow M741 GY Travel Alarm Cancel Switch
430 BU Operator Monitor Air Filter M742 PU AEC Mode Switch
441 OR Coolant Temp. Sender N769 GY Engine Oil Pressure SW
442 GY Hyd. Temp. Sender 877 YL Air Heater to Air Heater Relay
447 PK Fuel Level Sensor 892 BR Cat Data Link (-)
487 OR Hydraulic Filter SW 893 GN Cat Data Link (+)
491 PK Hydraulic Oil Temp Sensor K849 YL Atch Stem1 Swing Cancel
492 GY Coolant Temp Sensor Signal K850 BR Atch Stem2 Swing Cancel
496 WH Hyd Oil Level Switch K851 BU Atch Stem3 Swing Cancel
C468 BU Engine oIl Level K852 GN Atch Stem4 Swing Cancel
H465 GN Travel Alarm Cancel Indicator K904 GN Pump Discharge - Signal
H466 BU AEC Mode Indicator K906 GN Swing Brake Sol - Signal
H467 WH Travel Mode Indicator K907 BU Swing Brake Sol - +B
H473 BR Travel Straight Pressure Switch L968 OR Electronic Pump COntrol Ps Valve (-)
H474 GN Travel Right Pressure Switch L969 WH Electronic Pump Control Ps Valve (+)
H475 BU Travel Left Pressure Switch L972 BU Low Idle SW
H476 WH Joystick Pressure Switch L975 PK Start Aid Cont Lamp 1 Output
Accessory Circuits T967 YL Pump Discharge(2) Press Sensor
