Connector Location
Connector NumberSchematic
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
ComponentSchematic
Location
Machine
LocationComponent
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 SpecificationsPart No. Component Description
Resistance (Ohms)
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
At room temperature unless otherwise noted.
AREAA
3
5
6
10
13
1
22
23
7
4
31
2
7
AREA B
3
4
5
61
2
7
AREA C
1
AREA D
3
4
5
68
9
10
1
177
AREA E
3
4
5
6
8
9
10
11
12
14
15
1316
1
2
17 18
19
20
21
22
25
7
AREA F
3
4
56
8
9
1
2
7
3
4
1
2
4
6
8
10
12
14
15
13
16
D
1
2
171819
24
2526
2728
7
59
60
A
4
6
8
10
12
14
15
13
16
B
C
E
1
2
1718
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 SocketNumber
Receptacle
Plug
Wire Gauge
Wire, Cable, or Harness
Assembly IdentificationWire 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 WireConnector
Circuit NumberIdentification
GroundConnection
Pressure
SymbolTemperature
Symbol
Level
Symbol
Flow
Symbol
Circuit BreakerSymbol
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
RENR3615-01February 2004
320C Excavator
Electrical System
GHA1-135HBC1-213
2004 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
094-2080RELAYSTART CONT
161-3128BOOM LAMP RELAY
161-3128CHASSIS LAMP RELAY
ET CONN
161-3128HORN RELAY
330-YL
5A
1
BCDE
A
FGHJ
CA
163-6703TIMER RELAY
GND
34
2
+BIN
GNDOUT
RP
S
L
E
161-3128HYD LOCK SOL RELAY
161-3128NEUTRAL START RELAY
E
E
E
7N-0718DISCONNECT SW
E
J-12
E
E
HORNDOME LAMP/MEMORY
AUX CKT
E/P CONT
A/C BLOWERTIMER RELAY
KEY SW
A/C
10A
10A
BACKUP
SW PANEL/RADIO
10A
15A10A
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
5A10A
124-G
N-14
200-BK-18
330-YL
3
G
310-PU-18
124-G
N-14
405-GY-18
447-PK-18
C
184-RD
442-GY-18
330-YL
175-RD-14103-RD
308-YL-18
235-BK-18
893-GN-18892-BR-18
330-YL
442-GY-18
645-RD-18
616-BU607-PK
447-PK-18
330-YL
403-GN-18
200-BK-18309-GY-18
K776-GN-18
114-RD
322-GY
189-RD
320-RD-18
405-GY-18441-OR-18
441-OR-18405-GY-18
447-PK-18442-GY-18
330-YL
442-GY-18112-PU-6 447-PK-18
405-GY-18441-OR-18
164-0505SEAT HEATERATCH SEAT WITH
G
200-BK-1812
306-GN
154-RD307-OR
646-RD-18
200-BK-18
7Y-3919HORN
1
189-RD151-GN
A588-GN
2153-2521BOOM LAMPATCH
646-RD-18
WJ
5A
184-RD
WH/BU
YLBK
101-RD-6
200-BK-18
308-YL-18235-BK-18
893-GN-18892-BR-18
646-RD-18
149-RD
616-BU
308-YL
160-PU
149-RD
114-RD
103-RD
105-RD110-RD
J
175-RD-14
184-RD
A537-PK-18
G
153-2523LAMPCHASSIS
A588-GN
151-GN189-RD
K
K
441-OR-18
307-OR154-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-O
R-18
169-PK-18
113-O
R-18
405-G
Y-18
160-PU
607-PK 189-RD189-RD
447-PK-18
616-BU
149-RD
645-RD-18
442-G
Y-18
330-YL
892-BR-18893-GN-18235-BK-18308-YL-18
SE
109-RD-6
101-RD-6
112-PU-6
WH/YL
L12
607-PK
308-YL
200-BK189-RD
110-RD
WH/GN
309-G
Y-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-O
R-18
169-PK-18
+ BATTERY
HEATER RELAY
NCFUEL LEVEL SENSOR
GND
COOLANT TEMP SENDER
ONE TOUCH LOW IDLE
START CONT RELAYHYD OIL TEMP SENDER
BACKUP
129-BU
3
118-GY
56
2
CONSOLE(RH)
332-BU-18
447-PK-18
105-RD
7
L11
L10
147-PU-18147-PU-18
189-RD
496-WH-18
200-BK-18
491-PK-18
447-PK-18
200-BK
200-BK-18
607-PK
616-BU322-GY
200-BK
189-RD
487-OR-18
200-BK-14
200-BK-14
147-PU-18
4
10
175-RD-14110-RD
105-RD103-RD
180-GN
169-PK-18
8
113-OR-18
5A
645-RD-18
9
403-G
N-18
1
12
(NOTE C)
129-BU
332-BU-18
118-GY
114-RD
MONITOR
167-3613MONITOR
149-RD
160-PU
200-BK-18607-PK-18
154-RD
200-BK
124-GN-14
7G-1060
405-GY-18
308-YL
103-RD-18447-PK-18
330-YL-18
124-GN-14
RELAY PANEL
124-GN-14
441-OR-18
E
442-GY-18
E
9X-8124RELAYHEATER
E
441-O
R-18
C A
163-6752
442-G
Y-18
E TEMP.
REGULATOR
INDICATOR
GND
KEYSW.(START)
RELAY
CHECKTERM.
104-3204CONT UNITHEATER
KEYSW.(ON)
102-8016RESISTORBACKUP
464748
21
181920
171615
1213
163-6774
CABLE AS.
410-W
H-18
403-G
N-18
506-PU-18
330-YL-18
165-4026MAIN RELAY
121-1022DIODE
442-GY-18441-OR-18
200-BK-14
129-BU
14
4950
2223
645-RD-18
447-PK-18
103-RD-18
304-WH-8
109-RD-8
101-RD-6
24252627
200-BK-18308-YL-18
308-YL-18
112-PU-6
28
5152
29
169-PK-18
303132
5354
333435
169-PK-18
200-BK-18
363738
403-GN-18
39
306-G
N306-G
N
L975-PK-18200-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-18200-BK-18332-BU-18
A770-PK-18
101-RD-4
330-YL
105-RD
310-PU-18
4041
200-BK-18
306-GN
403-GN-18
200-BK-18
200-BK-18
308-YL
332-BU-18
308-YL-18
403-G
N-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-G
N-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
42434445
76543
8
12
112-PU-6101-RD-6101-RD-6
91011
442-GY-18441-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
121-1023BLOCK
10A
M742-PU-18
113-O
R-18
405-G
Y-18
H466-BU-18
607-PK-18
H467-W
H-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-G
N-18
877-YL-4
304-W
H-8
309-GY-18
109-RD-6
309-GY-18
118-G
Y
129-BU
147-PU-18
332-BU-18
893-G
N-18
147-PU-18
113-OR-18
151-G
N
1
307-O
R154-RD
320-RD-18
189-RD
308-YL
147-PU-18147-PU-18
645-RD-18
103-RD
K849-YL-18
175-RD-14
K850-BR-18
308-YL
K852-G
N-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-G
Y
200-BK-18
306-GN
L975-PK-18
A718-PU-18
A588-G
N
147-PU-18
189-RD
306-GN
322-G
Y
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-G
N-18
169-PK-18
A770-PK-18
K851-BU-18
310-PU-18
405-G
Y-18
235-BK
5I-8005(MONITOR)ENG OIL SW
405-GY-18
200-BK-18
-GY-18
200-BK-18
235-BK-18
893-G
N-18
892-BR-18
892-BR-18
2
893-G
N-18
K776-GN-18
235-BK-18N769-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-G
N-18
654321
405-GY-18
C
441-O
R-18
101-RD-4
(NOTE A)
306-GN
15A
235-BK-18
405-G
Y-18
447-PK-18
109-RD-8
101-RD-6
200-BK-18
403-G
N-18
101-RD-6
N769-GY-18
200-BK-14
442-G
Y-18
200-BK-18
442-G
Y-18
200-BK-14
447-PK-18
405-G
Y-18
200-BK-14
441-O
R-18
235-BK-18
H HH
147-PU-18
200-BK-18
147-PU-18
(NOTE A)
N769-G
Y-18
200-BK-14
N769-G
Y-18
175-RD-14
200-BK-14200-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-G
Y-18
N769-G
Y-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-O
R-18
892-BR-18
893-G
N-18
147-PU-18
310-PU-18
310-PU-18
10A
310-PU-18
10A
21
170-6929 J-12
125-1302START RELAY
M736-BU-18
147-PU-18332-BU-18
147-PU-18
163-6763F J-2
332-BU-18
G
121-1022DIODE
332-BU-18147-PU-18
5A
5ACAB FAN
5A5A
10A10A 10A
15A
10A
310-PU-18
332-BU-18
607-PK
892-BR-18893-GN-18
147-PU-18
147-PU-18
892-BR-18893-GN-18
201-BK-18
332-BU-18
147-PU-18147-PU-18
607-PK
893-GN-18
892-BR-18
169-PK-18169-PK-18169-PK-18169-PK-18
332-BU-18
103-RD103-RD
892-BR-18
103-RD
310-PU-18
893-G
N-18
607-PK
892-BR-18892-BR-18892-BR-18
892-BR-18892-BR-18
893-GN-18893-GN-18893-GN-18893-GN-18
M M C C C
200-BK-18
442-G
Y-18
447-PK-18
893-GN-18892-BR-18169-PK-18332-BU-18
310-PU-18
L1
607-PK
442-GY-18
103-RD
200-BK-18
447-PK-18200-BK-18
J-3SC 167-3583SE 132-1806
G-11
SE
SC
SC
B-10
E
E
E
A
H
H
169-PK-18892-BR-18893-GN-18201-BK-18
201-BK-18
H H
161-3779A/C UNITATCH
E
5A
164-0490HEATER UNITATCH
200-BK-14175-RD-14
G
7
6
1
8
3
103-RD201-BK-18
45
2
C
C
200-BK-14
A
111-9916CONT SOLPOWER SHIFT
169-PK-182
B
54
G
3
K776-G
N-18
1
6893-GN-18
121-1022DIODE
892-BR-18607-PK
10A
(NOTE B)
R/L
R
BRE554-PK-18
B
235-BK-18
200-BK
197-4276197-4444H F-5
(NOTE C)171-0188SOLFLOW LIMITATCH(NOTE B)
G-1J 170-6828163-6750K B-2
C-2
200-BK-18
157-3182PRESS. SENSOR1PUMP DISCHARGE
157-3182PRESS. SENSOR2PUMP DISCHARGE
C538-OR-18C537-GN-18
1 2 21
+B
GROUND
SIGNAL
892-BR-18
YL-18
BR-18
BK-18
893-G
N-18
B C
L 116-0227183-0998M
5A
A AC
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-3920HORN
K776-G
N-18
200-BK-18
L20 L20
L21L21L21
204-1630P F-6G-7R 204-1629
442-G
Y-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
183-1000FUSE BASE
119-PK-18
R
P
15A 113-849110A 113-84905A 141-2759FUSE
T
163-6700SENSORFUEL LEVEL
21
TC
GROUND
SIGNAL
1 2 2 1170-9376LEVEL SWHYD OIL
4I-5394(E/P CONT)TEMP SENDERHYD OIL
116-3660FILTER SWHYD OIL
5I-7578(MONITOR)SENDERCOOLANT 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-YL151-GN307-OR
154-RD
607-PK
K776-G
N-18
K776-G
N-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-PK607-PK
235-BK-18
441-OR-18
200-BK-18
118-GY
119-PK-18
645-RD-18129-BU
646-RD-18
200-BK-18
113-OR-18
103-RD
MOTOR
154-RD151-GN189-RD105-RD
200-BK-18
200-BK-18
P
A770-PK-18
K776-G
N-18
307-OR
607-PK
607-PK
607-PK
+B
21
E554-PK-18
H475-BU-18H474-GN-18
H476-WH-18
K849-YL-18
200-BK-18
P
N
M736-BU-18A755-PK-18
F774-WH-18F773-OR-18
K907-BU-18L969-WH-18L968-OR-18
A769-GY-18A768-BU-18
180-5316FAN MOTOR
ATCH 1
A756-BU-18A757-GY-18A758-BR-18L972-BU-18
410-WH-18
M741-GY-18
H466-BU-18H467-WH-18
2GNBK
M741-G
Y-18
M742-PU-18
M734-BR-18
K776-G
N-18
403-GN-18
403-G
N-18
M739-YL-18
506-PU-18
607-PK
607-PK607-PK
607-PK
200-BK-18
200-BK-18
119-PK-18200-BK-18
M739-YL-18
607-PK
N
6T-7337METERSERVICE
H H+ -
506-PU-18
403-G
N-18
K849-YL-18L972-BU-18
A758-BR-18A757-GY-18A756-BU-18
607-PK
200-BK-18
308-YL
A768-BU-18A769-GY-18
L968-OR-18L969-WH-18
200-BK-18
H465-G
N-18
309-G
Y-18
M741-G
Y-18
H465-G
N-18
H466-BU-18
M734-BR-18
H467-W
H-18
L21
200-BK-18
M736-BU-18
H474-GN-18H475-BU-18
K907-BU-18
F773-OR-18F774-WH-18
A755-PK-18
410-WH-18
K906-GN-18
H465-G
N-18
L21
200-BK-18
441-OR-18
200-BK
E554-PK-18
200-BK-18
441-OR-18
12
A
OPERATOR STATION
163-6785LIMIT SWNEUTRAL START
A
A
PLATFORM
A
21
21
200-BK-18
167-3466PRESS. SWJOYSTICK
21
167-3466PRESS. SWTRAVEL RIGHT
184-RD
200-BK-18
A
A
167-3466PRESS. SWTRAVEL LEFT
167-3466 (NOTE C)PRESS. SWATCH HAMMER
7G-1060GROUND STRAP
CHASSIS
OPERATOR STATION
200-BK-18
200-BK-14
200-BK-14
1 2
STONOFF
BSC
R
L5
106-0107POS SWTHROTTLE
9G-7641KEY SW
A768-BU-18
200-BK-18
235-BK-18
COMS1S2
H475-BU-18
200-BK-14
442-G
Y-18
200-BK-18
405-G
Y-18
441-O
R-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-18H473-BR-18
A
S4
128-2134LOW IDLE SWONE TOUCH
163-6711GOV SWBACKUP
163-6710EPR VALVE SWBACKUP
B
L. CHASSIS
C
GND
G G
163-6702IND UNIT
2 3 4 5
A
6
200-BK-18
BK-18WH-18RD-18
L972-BU-18A758-BR-18A757-GY-18A756-BU-18
307-OR
308-YL
105-RD
200-BK-14
235-BK-18
OPERATOR STATION
L19
A768-BU-18A769-GY-18
L968-OR-18
154-RD
1 87
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
7654
151-GN
3
189-RD
8
F773-OR-18F774-WH-18
A755-PK-18
M736-BU-18 235-BK-18
235-BK-18
235-BK-18
235-BK-18
H474-G
N-18
H475-BU-18
1 2
616-BU
607-PK200-BK
L21
200-BK-18442-GY-18
200-BK-14
189-RD151-GN154-RD
K849-YL-18
H475-BU-18
H475-BU-18
H474-G
N-18
H474-G
N-18
200-BK-18
200-BK-18
9
K906-GN-18
308-YL
410-WH-18
403-GN-18
103-RD
506-PU-18118-GY
M742-PU-18
H465-GN-18
M734-BR-18645-RD-18
C
129-BU
176-2005HEATER SW PANELATCH
200-BK-14200-BK-14
118-GY646-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-G
Y-18
410-WH-18
200-BK-18
A769-GY-18
H465-G
N-18
H465-G
N-18
H466-BU-18
M738-O
R-18
E554-PK-18
200-BK-14
175-RD-14
200-BK-14
E554-PK-18
12
C
C
ALTR
P
121-1491BRAKE SOLSWING
121-1491SOLTRAVEL SPEED
616-BU200-BK
L13
322-GY322-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-W
H-18
235-BK-18
235-BK
491-PK-18
5A
BK
235-BK-18
235-BK-18
K904-G
N-18
RD
M737-W
H-18
BK
YL
1 2
200-BK-18
T967-YL-18
A755-PK-18
F774-WH-18F773-OR-18
K907-BU-18
M736-BU-18
607-PK
235-BK-18
H465-G
N-18
H465-GN-18
K904-GN-18
200-BK
487-O
R-18
C
322-GYT967-YL-18
496-WH-18
A769-GY-18A768-BU-18
491-PK-18487-OR-18
A768-BU-18A769-GY-18
T967-YL-18K904-GN-18
C
M738-OR-18M737-WH-18
C C
A769-G
Y-18
A768-BU-18
3 4
128-2134HORN SW
2
FF
320-RD-18320-RD-18 200-BK-18200-BK-18
10
G
11
G
GG
G
G
G
G
12
607-PK
150-O
R-18
235-BK-18
150-O
R-18
780-PU-18
200-BK-18
780-PU-18
200-BK-18
6
235-BK-18L972-BU-18
235-BK-18
200-BK-18
235-BK-18
308-YL
1
6
200-BK-14
2345
5
L17
A755-PK-18A756-BU-18
L17
A757-GY-18A758-BR-18
A769-GY-18
169-PK-18
607-PK
F774-WH-18F773-OR-18169-PK-18
A768-BU-18
K906-GN-18K907-BU-18A770-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-ORM736-BU-18
M736-BU-18
M736-BU-18
A755-PK-18
L968-O
R-18
L969-W
H-18
A770-PK-18
K907-BU-18
105-RD
M734-BR-18
M742-PU-18
H465-GN-18
M742-PU-18
H465-G
N-18
M741-GY-18M741-GY-18
K906-G
N-18
403-G
N-18
A768-BU-18
200-BK-14
A769-G
Y-18
646-RD-18
F773-O
R-18
F774-W
H-18
200-BK-14
235-BK-18
L972-BU-18
A758-BR-18
A757-G
Y-18
A756-BU-18
A755-PK-18
176-1986DOME LAMP
L969-WH-18L968-OR-18
A769-GY-18A768-BU-18
308-YL
A756-BU-18A757-GY-18A758-BR-18
L972-BU-18
K849-YL-18
506-PU-18
105-RD
307-O
R326-RD
308-YL
E554-PK-18
200-BK-14
200-BK-18200-BK-14
200-BK-6
3 4 5 61 87 9 10
11
12
200-BK-14
F774-W
H-18
F773-O
R-18
K907-BU-18
A770-PK-18
L969-W
H-18
L968-O
R-18
A769-G
Y-18
A768-BU-18
K906-G
N-18
607-PK
105-RD
308-YL
326-RD
307-O
R
A756-BU-18
A757-G
Y-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-G
N-18
607-PK
616-BU
403-GN-18
309-GY-18
A718-PU-18
L975-PK-18
L18
HARNESS AS.
LOCPART NO.IDENT
DESIGNATIONCIRCUIT GROUPING#L
COMPONENTATCH 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 SENDERHYD OIL
CT
BLUEGREEN
BUGN
RDWHOR
101-RD-6 60A
9S-0174ALT BREAKER
WJ WC
H476-WH-18
A588-G
N
322-G
Y
7 8 9 10
11
12
5431 2 6
2 3 4 5 61 87 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-RD103-RD200-BK
L3
L23
L2L2
103-RD
L23
L2
L3
L5
L4
L5
13
14
15
16
17
18
19
20
212 3 4 5 61 87 9 10
112 3 4 5 61 812 7 9
10
154-RD
307-O
R
11
5I-7578(E/P CONT)SENDERCOOLANT TEMP
T
(50A)5I-8085ALTERNATOR
12
12
11
CA
L6
1097 81 65432 18
17
16
15
14
13
A
151-G
N308-YL
105-RD
118-G
Y
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
45
C
GND
C
MOTOR
(NOTE D)176-1895A/C CLUTCH SOLATCH
178-6540PICKUPENG SPEED
1
2
125-2988MOTORSTARTER
G S
MTRBAT
21
170-9376LEVEL SWENG OIL
KEY
157-3177ACTUATORENG GOV
6DECEL
21
ACCEL
+BF/B
GND
5I-7746AIR HEATER
12170-9486
TEMP SENSORAIH COOLANT
T
ENG
E554-PK-18
M738-OR-18M737-WH-18
M739-YL-18
K904-G
N-18
T967-YL-18
A769-G
Y-18
A768-BU-18
200-BK
487-O
R-18
200-BK
322-G
Y616-BU
607-PK
235-BK-18235-BK-18
491-PK-18
496-W
H-18
788-YL-18
A762-PU-18
877-YL-4
189-RD
788-YL-18A762-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-18F773-OR-18F774-WH-18
308-YL
M736-BU-18
C468-BU-18
200-BK-18
235-BK-18
235-BK-18
304-WH-8101-RD-4
200-BK-18
200-BK-6
200-BK-18
403-GN-18109-RD-6
200-BK-18
1
200-BK-18
235-BK-18
A718-PU-18492-GY-18
200-BK-18
M736-BU-18
308-YL
492-GY-18A718-PU-18
877-YL-4
492-GY-18
200-BK-6 109-RD-6
309-G
Y-18
101-RD-4200-BK-6
A762-PU-18788-YL-18
RD-00
304-WH-8
200-BK-18A718-PU-18
L16 L16
F774-WH-18F773-OR-18
101-RD-4304-WH-8
235-BK-18
C468-BU-18
WHBK
A761-PU-18
200-BK-18
M736-BU-18
308-YLF774-WH-18
C468-BU-18
F773-OR-18A761-PU-18189-RD
877-YL-4
A762-PU-18788-YL-18
189-RD
F773-O
R-18
F774-W
H-18
308-YL
M736-BU-18
C468-BU-18
E554-PK-18
E554-PK-18
235-BK-18
304-W
H-8
101-RD-4
E554-PK-18
403-G
N-18
403-G
N-18
109-RD-6
A718-PU-18
492-G
Y-18
235-BK-18
235-BK-18
121-1491SOLHYD LOCK
121-1491SOLTRAVEL STRAIGHT
12
21
12
L13 L13
L1
L16
L14 L14
L15
L14
L17
L18
L1
L19
L17
150-OR-18
780-PU-18
157-3165ENG/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-G
Y-18
893-G
N-18
E554-PK-18
893-G
N-18
H
892-BR-18
K906-G
N-18
410-W
H-18
A755-PK-18
F774-W
H-18
F773-O
R-18
K907-BU-18
235-BK-18763-BU-18
H475-BU-18H476-WH-18
H474-GN-18
M736-BU-18
CAB
235-BK-18
M734-BR-18
H467-WH-18H466-BU-18
M742-PU-18
H465-GN-18
M741-GY-18
T967-YL-18
L969-W
H-18
L968-O
R-18
A769-G
Y-18
A768-BU-18
308-YL
A756-BU-18
A757-G
Y-18
A758-BR-18
L972-BU-18
506-PU-18
K906-GN-18
763-BU-18
235-BK-18
M739-YL-18
H467-W
H-18
M741-G
Y-18
H465-GN-18
M742-PU-18
H466-BU-18
M734-BR-18
H476-W
H-18
H475-BU-18
H474-G
N-18
H474-GN-18H475-BU-18
A588-GN
308-YL
308-YL
308-YL
TRAVELSTRAIGHTPRESSSW
CREEPERTRAVELFUNCTIONSW
FREESWINGSWM736-BU-18
200-BK-18
M736-BU-18
A584-BU-18
235-BK-18
235-BK-18
410-W
H-18
235-BK
L968-O
R-18
A761-PU-18
L972-BU-18
L969-W
H-18
A755-PK-18
A756-BU-18
A757-G
Y-18
788-YL-18
A762-PU-18
412-BU-18
430-BU-18
492-G
Y-18
491-PK-18
A758-BR-18
496-W
H-18
L975-PK-18
C468-BU-18
K907-BU-18
487-O
R-18
K904-G
N-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
ATCHSTEM3SWINGCANCEL
M736-BU-18
877-YL-4
304-W
H-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-G
N
322-G
Y
T967-YL-18
235-BK
167-3583GROUND STRAP
CE
E
L15
412-BU-18
430-BU-18
L972-BU-18
A758-BR-18
A757-G
Y-18
A756-BU-18
308-YL
L968-O
R-18
L969-W
H-18
M741-GY-18
M742-PU-18
H466-BU-18H467-WH-18
M734-BR-18
OVERLOADALARM
CANCELSW
PUMPDISCHARGE(1)PRESSSENSOR
ANALOGSENSORRETURN
H474-GN-18H476-WH-18
H475-BU-18
K907-BU-18
A755-PK-18
410-W
H-18
892-BR-18
893-G
N-18
893-G
N-18
892-BR-18
NOTE B: NOT USED ON THIS MACHINE.
308-YL
A768-BU-18
A769-G
Y-18
F773-O
R-18
F774-W
H-18
K906-G
N-18
506-PU-18
235-BK-18
322-G
Y
A588-G
N
A718-PU-18
309-GY-18
403-G
N-18
309-GY-18
616-BU
607-PK
189-RD
101-RD-4
109-RD-6
304-W
H-8
877-YL-4
T967-YL-18
K904-G
N-18
487-O
R-18
C468-BU-18
496-W
H-18
491-PK-18
492-G
Y-18
A762-PU-18
788-YL-18
1
A761-PU-18
M740-PK-18
M737-W
H-18
M738-O
R-18
M739-YL-18
763-BU-18
763-BU-18
M739-YL-18
M738-O
R-18
M737-W
H-18
M737-WH-18
2
A761-PU-18
788-YL-18
A762-PU-18
492-G
Y-18
491-PK-18
496-W
H-18
C468-BU-18
487-O
R-18
K904-G
N-18
T967-YL-18
A584-BU-18
K906-G
N-18
F774-W
H-18
F773-O
R-18
200-BK-14
A769-G
Y-18
A768-BU-18
235-BK-18
235-BK-18
235-BK-18
322-G
Y
A588-G
N
A718-PU-18
403-G
N-18
616-BU
607-PK
189-RD
101-RD-4
109-RD-6
304-W
H-8
877-YL-4
235-BK-18
200-BK-18
200-BK-18
3
4 56
7 89
10 11
200-BK
200-BK
12
893-G
N-18
892-BR-18
M739-YL-18M738-OR-18
200-BK
M738-O
R-18
M737-W
H-18
E
200-BK-14
H466-BU-18
M
11
L15L15
K904-GN-18T967-YL-18
E554-PK-18
A769-GY-18A768-BU-18
487-OR-18491-PK-18496-WH-18
E
CA CC CE
CC
POSNEG NEGPOS3T-5760BATTERY
096-0744LEVEL SWCOOLANT
154-0498SWAIR CLEANER
MOTOR
200-BK-18
7T-8890WASHER
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-1821
A167-3466 (NOTE B)PRESS. SWATCH STRAIGHT TRAVEL
235-BK-18235-BK-18235-BK-18
235-BK-18
235-BK-18235-BK-18235-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-G
Y-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-G
N-18
403-G
N-18
403-G
N-18
200-BK-14
ALT REGULATOR309-GY-18
113-O
R-18
645-RD-18
H466-BU-18H467-WH-18
200-BK-14
M737-W
H-18
M738-O
R-18
506-PU-18
118-G
Y
M737-WH-18
M741-G
Y-18
M742-PU-18
M741-G
Y-18
H466-BU-18
M734-BR-18
H467-W
H-18
M738-OR-18
200-BK
M738-O
R-18
M737-W
H-18
129-BU
H466-BU-18
H467-W
H-18
H467-W
H-18
H467-W
H-18
H467-WH-18
646-RD-18
M739-YL-18
M741-G
Y-18
M742-PU-18
H476-W
H-18
H467-WH-18
200-BK-14
M739-YL-18
200-BK-14
M739-YL-18
M739-YL-18
H465-GN-18H465-GN-18
M742-PU-18
M742-PU-18 M742-PU-18M742-PU-18
M741-G
Y-18
M741-GY-18
(NOTE A)
M741-GY-18
H476-W
H-18
H476-W
H-18
763-BU-18
H476-WH-18
A584-BU-18
21M740-PK-18
9W-0335LIGHTERCIGAR
1 2
MOTOR
13
12
167-7083SENSORATCH A/C PHOTO
163-6701SWITCH PANEL
107
H
155-7042WIPER CONT
161-3667MOTORWIPER
GND
W.INT(3)
W.LOW
WASH
L.BOOM
L.CHASSIS +B
6
H
117-6306WINDOW LIMIT SW
CAB
ALARM
CANCELSW
ALARM
CANCELIND
5
AECMODESW
8
AECMODEIND
114 93
157-3210A/C SW PANELATCH
INT(6)
W.CCW
W.CW
REV
STOP
GND
WASH
ACC
WA+
LOW
WIPERCUT
RISE.S
INT(3)
21 9
TRAVELMODEIND2
20
TRAVELMODESW
TRAVELMODEIND1
10
148
137
11
12543 6
15
H
W.INT(6)
H
16
17
18
19
HH
235-BK-18
200-BK200-BK
200-BK
200-BK200-BK
200-BK
200-BK
200-BK-18
200-BK
200-BK-14
200-BK
590-G
Y-18
113-O
R-18
200-BK-18
129-BU
A579-OR
C537-GN-18C538-OR-18
200-BK
530-OR-18
A580-BR
501-GN-18A586-OR-18
A581-GNA582-PU
200-BK-14
200-BK-18
A584-BU-18
L11
200-BK-14
A586-O
R-18
530-O
R-18
A579-O
R
646-RD-18
M734-BR-18
118-G
Y506-PU-18
A580-BR
501-G
N-18
A581-G
NA582-PU
A584-BU-18
590-G
Y-18
645-RD-18
200-BK
235-BK-18
645-RD-18M734-BR-18
646-RD-18
200-BK-18
113-OR-18
590-GY-18
Y/W
Y/G
A586-O
R-18
501-G
N-18
200-BK
530-O
R-18
590-GY-18
A584-BU-18
L11
L12
A582-PU
L12
A581-GN
501-GN-18
A580-BR
506-PU-18118-GY
A579-OR
530-OR-18
A586-OR-18
200-BK-18129-BU200-BK
200-BK
200-BK-18
200-BK-18
200-BKC538-OR-18C537-GN-18
A582-PUA581-GNA580-BR
200-BK
A579-OR
200-BK
C537-GN-18C538-OR-18
118-GY506-PU-18A584-BU-18
129-BU
113-OR-18
646-RD-18
M734-BR-18645-RD-18
M736-BU-18
M736-BU-18
M736-BU-18
YLPKBK
OR SCREW TERMINALBLADE, SPADE, RING,
OF COMPONENTCONNECTION TO SURFACEINTERNAL ELECTRICAL
TO MACHINE STRUCTUREELECTRICAL CONNECTION
CONNECTOR
SYMBOL DESCRIPTION
BROWNPURPLEGRAYBLACK
COLORABBREV
PINKYELLOWORANGEWHITERED
BRPUGY
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
OPTIONVOLTAGESW
(1)
TRAVELSTRAIGHTSOL
HEATERRELAY/STARTERRELAY
L11
L12
L12
L11 L11
OPTIONCONTROLPRV
FANMOTORCONTROLPRV
PRVRETURN(4)
PRVRETURN(3)
TRAVELSPEEDCHANGESOL
ACTIONALARM
ATCHSTEM2SWINGCANCEL
CATDATALINK(-)
CATDATALINK(+)
JOYSTICKPRESSSW
TRAVELLEFTPRESSSW
TRAVELRIGHTPRESSSW
OPTIONPWM
IN(1)
BACKUPSW
L8
L7
TRAVELMODESW
AECMODESW
L7
L10 L10
O.L.W
.D.PRESSSENSOR
L10
L22 L22
L6
L6
L5
L5
L4
L4
L6
L5
L4
L9
L9
PUMPDISCHARGE(2)PRESSSENSOR
FUELSECONDARYFILTERPLUGGED
A
A A
FUELPRIM
ARYFILTERPLUGGED
+12VSUPPLY
TRAVELALARM
CANCELSW
THROTTLEPOSITION1
THROTTLEPOSITION2
THROTTLEPOSITION3
THROTTLEPOSITION4
PRVRETURN(1)
COOLANTLEVELSW
SPEEDSENSOR(+)
CC
C
C
C
C
C
C
235-BK
C
C C
E E
C C C C
E
E
CCCE G-11163-6775
WIRE AS.
197-4456 G-6C
WA 163-6754163-6755WC
WE
A
163-6757111-4829
SPEEDSENSOR(-)
WFWG 163-6753
163-6780WHWJ G-10170-9478
G-8G-8G-8
G-8CFCG G-8163-6751
G-8H-11J-7
PRVRETURN(2)
PRIM
ARYNFCPRESSPRV
RELAY PANELRELAY PANEL
CF
ENGOIL
LEVELSW
FUELLEVEL
HYDOIL
LEVELSW
AIR
CLEANERPLUGGED
HYDOIL
TEMPSENSOR
WATERSEPARATORLEVELSW
COOLANTTEMPSENSOR
ALTERNATORRTERM.
TRAVELALARM
CG
CG CF
ENGOIL
PRESSSW
WA
WC
WE
WF
SWINGBRAKECANCELSOL
POWERSHIFTCONTROLPRV
WG
WH
WG
WH
WA
WFWE
197-4452 G-8E
(NOTE A)
SPECIALFILTERPLUGGED
ATCHSTEM1SWINGCANCEL
CAPSULEFILTERPLUGGED
+B
AIR
HEATERCONTROLLER
FINESWINGSW
FLOW
LIM
ITPRESSPRV
TRAVELMODEIND
OPTIONSW
M734-BR-18
KEYSW
ON
OPTIONCONTROLPRV
ONETOUCHLOW
IDLESW
GND
M736-BU-18
410-W
H-18
892-BR-18
893-G
N-18
L968-O
R-18
OPTIONSW
A761-PU-18
AECMODEIND
L972-BU-18
TRAVELALARM
CANCELIND
GOVERNORFEEDBACK
SENSORRET
T967-YL-18
L969-W
H-18
A755-PK-18
A756-BU-18
A757-G
Y-18
788-YL-18
A762-PU-18
412-BU-18
430-BU-18
492-G
Y-18
491-PK-18
A758-BR-18
496-W
H-18
L975-PK-18
C468-BU-18
K907-BU-18
487-O
R-18
K904-G
N-18
GND
308-YL
K849-YL-18
3 215 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
GOVERNORCOMMAND
ATCHSTEM4SWINGCANCEL
AUTOLUBFAILURE
SWITCHRETURN
K849-YL-18
37
36
352 34
2474 25
33
20
32
26
31
30
10
19
18
27
28
298 9 17
16
15
14
13
121 1
BC
A
M739-YL-18M739-YL-18M739-YL-18
M737-WH-18M738-OR-18
M739-YL-18
C
403-G
N-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 98 29
28
27
10
26
20
254 7 242 23
2265 213 11
H
306-GN330-YL
E
330-YL
330-YL
616-BU200-BK
CONN. 1
CONN. 2CONN. 3
CONN. 4
CONN. 5
CONN. 6
CONN. 7
CONN. 8
CONN. 9
CONN. 11CONN.12
CONN. 13 CONN. 14
CONN. 16
CONN. 15
CONN. 18
CONN. 17
CONN. 10
Wire DescriptionWire
Number
Wire
ColorDescription
Wire
Number
Wire
ColorDescription
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
