SENR8738
July 1994
322 L, 322 N and 322 LN
Excavators Electrical System
9JL1-UP
8ML1-UP
4RM1-UP
©
1994 Caterpillar
All Rights Reserved
Printed in U.S.A.
HARNESS CONNECTOR LOCATION CHART
Connectors
Machine
Location
Harness And/Or
Com
p
onents
S
c
h
ema
ti
c
Location
Connectors
Machine
Location
H
arness
A
n
d/
or
Components
S
c
h
ema
ti
c
Location
40 Contacts CONN1 A -114-3861 CONN49 B - 114-5268 A-5
* Controller Fuel Level Sensor
24 Contacts
CONN2 A - 114-3861 CONN51 B - 114-5268 B-10
* Implement Swing
CONN9 A - 114-3861 Pressure Sw
B - 114-5268 CONN53 B - 114-5268 B-9
CONN8 A - 114-3861 Level Solenoid
B - 114-5268 CONN38 B - 114-5268 B-2
CONN13 A - 114-3861 N - 102-7866
F -117-5646 CONN56 B - 114-5268
CONN3 A - 114-3861 Proportional Reducing
G - 114-5267 Valve
CONN5 A - 114-3861 CONN59 B - 114-5268
10 Contacts G - 114-5267 Refueling Pump
CONN6 A - 114-3861 CONN48 B - 114-5268
G - 114-5267 ZZ - 51-8370
CONN24 A - 114-3861 CONN39 B - 114-5268
H - 51-8215 D -116-8177
CONN18 A -114-3861 CONN57 B - 114-5268
J - 7Y-3921 S - 113-2485
CONN17 A - 114-3861 CONN43 B - 114-5268
L - 102-7902 Start Aid Coolant Temp
CONN4 B - 114-5268 CONN63 B - 114-5268
G - 114-5267 Start Aid Solenoid
7 Contacts
CONN14 A -114-3861 CONN47 B -114-5268
E-6C-9117 T - 102-7872
CONN10 A -114-3861 CONN45 B - 114-5268
6 Contacts B -114-5268 Travel Alarm
CONN34 F -117-5646 CONN55 B - 114-5268
W - 102-7874 Travel Speed Solenoid
CONN15 A - 114-3861 CONN54 B - 114-5268
Air Conditioner Unit 2 Contacts Trenching Solenoid
CONN19 A - 114-3861 CONN7 B - 114-5268
J - 7Y-3921 W - 102-7874
CONN60 B - 114-5268 CONN75 A - 114-3861
C - 51-8268 Seat Heater
5 Contacts CONN27 H - 51-8215 CONN40 C - 51-8268
Engine Speed Dial A/C Clutch Solenoid
CONN44 G - 114-5267 CONN42 C - 51-8268
Engine Governor Engine Speed Sensor
Actuator CONN31 E - 6C-9117
CONN15 A - 114-3861 Action Alarm
Heater Unit CONN20 J - 7Y-3921
CONN58 A -114-3861 RR - 117-7253
A - 114-3861 CONN22 J - 7Y-3921
CONN33 M - 6C-9362 Lower Wiper Sw
Lower Wiper Motor CONN61 R - 7Y-8105
CONN32 F -117-5646 Converter
Wiper Motor CONN46 T - 102-7872
CONN30 E-6C-9117 Fine Swing Cont Solenoid
Monitor CONN37 W - 102-7874
3 Contacts CONN12 F - 51-8216 Hammer Control Solenoid
R - 7Y-8105 CONN26 H - 51-8215
CONN25 A -114-3861 Start Aid Sw
H - 51-8215 CONN67 L - 102-7902
CONN41 C - 51-8268 Seat Heater Sw
Engine Oil Pressure Sw CONN66 L - 102-7902
CONN21 J - 7Y-3921 Not Used
Lower Wiper Switch CONN73 V - 51-8375
CONN62 R - 7Y-8105 Fine Swing Control Sw
Converter CONN74 A - 114-3861
CONN29 A -114-3861 Z - 106-0026
Travel Pressure Sw CONN28 H - 51-8215
CONN34 A - 114-3861 1 Contact Low Idle Sw
2 Contacts Travel Pressure Sw CONN64 K - 7Y-3868
CONN23 A - 114-3861 HornSw
K - 7Y-3868
CONN50 B - 114-5268
Boom Raise Pressure Sw
* = Connector is located at the component.
B-7
A-7
D-9
C-5
D-10
C-8
E-10
C-5
E-9
F-9
F-9
D-4
D-5
E-5
D-10
E-2
E-6
D-5
B-12
C-2
E-6
C-8
F-2
F-2
E-2
B-6
D-3
B-12
C-3
B-6
E-2
E-2
F-3
B-1 0
A-9
A-3
A-5
F-12
A-3
B-11
E-12
B-3
D-12
B-9
B-9
B-3
E-4
C-12
B-12
E-2
C-3
B-3
B-6
A-4
B-4
F-3
F-3
F-3
F-3
E-5
C-3
F-3
Controller
Component Location Chart
Machine
Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
1 Actuator - Engine Governor C-7 C-7 Sender - Hydraulic Oil Temp A-8
3A Alarm - Action E-2 E-2 Sensor - Fuel Level A-4
2 Alarm - Travel D-12 D-12 Sensor - Engine Speed B-12
3 Alternator B-11 B-11 Solenoid - A/C Compressor Clutch C-12
4 Antenna C-6 C-6 Solenoid - Engine Shutdown C-12
5 Batteries E-10 E-10 Solenoid - Fine Swing B-4
6 Controller - Eng/Pump B-7 B-7 Solenoid - Hammer Control B-4
7 Converter - Voltage B-6 B-6 Solenoid - Level A-9
3B Dial - Engine Speed C-2 C-2 Solenoid - Proportioal Reducing Valve A-9
7D Fuse Block F7,8,9 F7,8,9 Solenoid - Start Aid E-12
33 Heater - Seat E-4 E-4 Solenoid - Travel Speed B-9
8 Horns A-2 A-2 Solenoid - Trenching B-9
9 Lamps - Boom A-2, B-2 A-2, B-2 Switch - Boom Raise Pressure B-10
10 Lamps - Cab E-1, F-1 E-1, F-1 Switch - Disconnect D-9
11 Lamp - Chassis A-2 A-2 Switch - Engine Oil Pressure B-12
12 Lamp - Dome C-6 C-6 Switch - Fine Swing Control F-3
1A Lighter - Cigar E-3 E-3 Switch - Governor Backup B - 5
2A Meter - Service E-2 E-2 Switch - Hammer Control C-3
4A Monitor E-2 E-2 Switch - Seat Heater F-3
13 Motor - Lower Wiper F-2 F-2 Switch - Horn F-2
17 Motor - Refueling Pump A-3 A-3 Switch - Implement Swing Pressure B - 10
14 Motor - Starter B-12 B-12 Switch - Low Idle D-3
15 Motor - Washer E-12 E-12 Switch - Lower Washer B-3
16 Motor - Wiper F-2 F-2 Switch - Lower Wiper B-3
38 Radio B-6 B-6 Switch - Neutral Start F-2
8D Relay - Boom Lamp E-8 E-8 Switch - Pump Backup F-4
8D Relay - Chassis/Cab E-8 E-8 Switch - Refrigerate Low Pressure C-12
8D Relay - Fine Swing E-8 E-8 Switch - Refueling (start) A-4
8D Relay - Horn E-7 E-7 Switch - Refueling (stop) A-3
4D Relay - Main D-7 D-7 Switch - Speed Change B-4
8D Relays - Refueling Pump E-7 E-7 Switch - Key Start B-2
3D Relay - Starter D-7 D-7 Switch - Start Aid B-2
8D Relay - Washer E-8 E-8 Switch - Start Aid Coolant Temp B-12
8D Relay - Wiper E-8 E-8 Switches - Travel Pressure E-2
2D Resistor D-7 D-7 Terminal Block D-9
1C Resistor - Backup F-5 F-5 Unit - Air Conditioner E-6
18 Sender - Engine Coolant Temp C-12 C-12 Unit - Heater E-6
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
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
32
37
35
33
36
38
7
F
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
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
32
37
35
33
36
38
7
F
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
8
9
10
35
34
37
36
33
33
34
35
37
36
Machine Harness Connector and Component Locations
4
4
1
3
2
3
1
2
5
7
8
5
1
2
8
7
6
9
1
4
3
6
3
4
2
4
9
3
1
3
6
4
5
1
5
10
6
8
7
5
8
7
7
6
4
6
5
3
4
2
1
9
2
3
8
1
3
1
1
3
4
3
1
3
2
4
1
2
5
AREA E
3250510
AREA F
3250510
AREA A
3300158
2
AREA B
3220102
AREA C
3220177
AREA D
3200348
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
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.
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.
6
D
4
A
3
D
1
D
5
D
1
F
14
4
F
2
D
1
1
B
1
C
7
D
7
D
4
D
2
7
C
2
B
4
3
B
7
C
8
D
5
6
1
A
7
8
9
7
B
10
11
11
12
1
E
9
D
13
2
E
15
16
17
18
19
20
21
22
3
F
2
F
23
4
C
24
25
2
A
5
B
8
B
28
29
30
4
B
5
C
6
C
8
C
3
6
B
3
C
1
2
3
4
546-BU
B734-GY
A848-PK
550-OR
A850-WH
550-OR
549-PK
1
2
3
546-BU
B734-GY
A848-PK
550-OR
PP
PP
KK
CHASSIS
KK
3
2
1
B734-GY
ATCH-AUX. VALVE
6C6664
2
1
3
ATCH-PRESSURE SW
101-3082
KK
YL
BK
WH
PP
PP
147-PU
198-PK
955-BU
198-PK
546-BU
550-OR
A848-PK
2
1
ATCH-HAMMER FOOT
SW
ATCH-PRESSURE SW
SAFETY
1
2
551-YL
953-GY
951-PK
551-YL
955-BU
951-PK
551-YL
955-BU
951-PK
551-YL
953-GY
951-PK
1220386
DIODES AS
PP
B734-GY
200-BK
B734-GY
955-BU
198-PK
2
1
LL
RR
PP
PP
1
2
3
4
5
6
551-YL
549-PK
548-GY
198-PK
147-PU
550-OR
L36
A850-WH
550-OR
549-PK
546-BU
B734-GY
A848-PK
550-OR
547-OR
546-BU
198-PK
PROVISION FOR
BEACON LIGHT
6 DIN 46327
200-BK
8103-YL/RD
B957-GN
168-GN
200-BK
2
1
L6
RRRR
147-PU
586-BR
1
2
ATCH HAMMER-AHC CONT.
SW 7X6388
RD
RR
198-PK
3
2
1
PLATFORM
551-YL
549-PK
548-GY
198-PK
147-PU
550-OR
RH-SW
LH-SW
ONE TOUCH LOW
IDLE SW
RH-SW
LH-SW
HORN SW
RR
RR
RR
RR
CONT.GP LH
1132531
198-PK
547-OR
546-BU
198-PK
LL
LL
LL
LL
H
548-BU
198-PK
A758-BR
198-PK
147-PU
550-OR
551-YL
549-PK
548-GY
A757-GY
A756-BU
A
A755-PK
308-YL
310-PU
105-BR
326-PU
547-OR
546-BU
198-PK
6
PLATFORM
200-BK
7
8
L36
L35
9
198-PK
200-BK
112-PU-14
308-YL
200-BK
308-YL
ATCH HAMMER FOOT SW IS USED
551-YL
951-PK
953-GY
551-YL
2
1
NOTE H
3
2
1
951-PK
3
2
1
551-YL
953-GY
551-YL
SS TT
PP PP
A850-WH
A848-PK
953-GY
951-PK
548-GY
547-OR
548-GY
547-OR
PP PP
TT SS
NOTE H : CONNECT THIS WAY WHEN
BK
551-YL
BU
953-GY
551-YL3
2
1
TT TT
ATCH BOOM DOWN
SOL. 4I6158
2
1
TT TT
1
2
951-PK
SS
ATCH HAMMER
CONT.SOL.
7Y5005
3
2
1
ATCH SERVICE
METER
6T7337
-
+
953-GY
551-YL
953-GY
551-YL
953-GY
551-YL
- +
ENGINE SPEED
CONTROL
1
2
NOTE G
TT
UU
ATCH HAMMER
CONT. SOL.
116-4416
UU
ATCH RPM REGULATOR
116-9958
K973-PK
K974-PU
K975-WH
K976-BR
200-BK
A755-PK
A756-BU
A757-GY
A758-BR
L6
K973-PK
K974-PU
K975-WH
K976-BR
200-BK
A755-PK
A756-BU
A757-GY
A758-BR
200-BK
307-OR
326-PU
105-BR
310-PU
308-YL
UU
K973-PK
K974-PU
K975-WH
K976-BRA758-BR
A757-GY
A756-BU
H
A755-PK
308-YL
310-PU
105-BR
326-PU
6
7
8
9
5
4
3
2
1
10
307-OR
200-BK
PLATFORM
168-GN
B957-GN
2
1
3
2
1
NOTE F
BK
1
2
3
4
RD
M
501-GN
118-GY
200-BK
200-BK
ATCH
COMBINED SOL
A QQ
QQ
QQ
ATCH
LIMIT-SW
3T3132
952-OR
QQ
200-BK
1
2
952-OR
200-BK
1
2
3
4
1
2
3
4
152-BU
A
L35
828-WH
830-OR
830-OR
JJ 6C-9134 E-1 NOTE B
828-WH
TRAVEL SW
(RIGHT)
4I-5387
TRAVEL SW
(LEFT)
4I-5387
200-BK
830-OR
200-BK
828-WH
F
1
2
200-BK-14
200-BK 200-BK
ATCH REFUELING PUMP
START SW(NORMALY OPEN)
9X4959
L37
1
2
L37
122-BU
120-YL 120-YL
122-BU
A537-PK
124-GN
152-BU
A769-GY
200-BK
200-BK
D760-YL
200-BK
A
2
1
124-GN
519-PK
L14
BK124-GN
A537-PK RD
198-PK
549-PK
2
1
200-BK
200-BK
B786-BU
200-BK 2
D760-YL
A
1
1
2
NOTE B
NOTE G : HARNESS UU IS INSERTED BETWEEN HARNESS A AND H WHEN ATCH RPM
IS INSTALLED
3
NOTE B : USE WHEN ATCH FOPS IS INSTALLED
L34
L34
J-1
C-2
D-4
D-2
D-1
C-2
E-1
E-1
C-2
C-2
E-1
A-4
L33
L31
L33
3
L31
L32
1
L32
H
2
168-GN
B957-GN
L11
ATCH
FINE SWING
CONT SW
7X-6386
V
A
1
1
2
513-OR
RD
2
519-PK
ATCH A/C CLUTCH SOL
102-0347
168-GN
B957-GN
L30
513-OR
GB
B957-GN
ATCH REFUELING PUMP
STOP SW(NORMALY CLOSED)
9X4959
1
2
325-PK
200-BK
B747-PU
147-PU
168-GN
HEATER UNIT
107-1995
NOTE D : USE WITH COLD WEATHER.
D761-GN
ZZ 5I-8370 A-5
D761-GN
W 102-7874 B-3
D760-YL
L23
BK-00
200-BK 306-GN
308-YL
607-PK
D760-YL
D761-GN
D760-YL
147-PU
147-PU
D761-GN
147-PU
607-PK
142-BU-14
D761-GN
616-BU
147-PU
D760-YL
ATCH
FINE SWING
RELAY
7Y-5490
147-PU
FINE SWING
D760-YL
ATCH
FINE SWING
SOL
7I-0124
200-BK
D760-YL BK
BK-00
200-BK
200-BK
BOOM RAISE SW
106-0092
200-BK
1
2
A761-PU
184-BU
A983-BU
792-OR
791-PK
B
786-GN
200-BK
L21
200-BK
B751-YL
A763-GY
A761-PU
113-OR
L23
304-WH-8
101-RD-6
109-OR-6
101-RD-14
109-OR-6
101-RD-14
101-RD-6
309-GY
109-OR-6
XX
G
G
WW
G
GG
YY
109-OR-8
G
A761-PU
792-OR
791-PK
112-PU-14
786-GN
112-PU-14
184-BU
112-PU-14
A983-BU
B751-YL
A763-GY
113-OR
615-YL
120-YL
147-PU
152-BU
124-GN-14
129-BU
118-GY
20A
15A
142-BU-14
113-OR
10A
B751-YL
A763-GY
A761-PU
200-BK
113-OR
575-YL
A769-GY
200-BK
D
ATCH REFRIGERANT SW 114-5334
LEVEL FINISH
SOL
4I-5674
1
2
B955-YL
B956-PK
113-OR
201-BK
E
H
1
2
B957-GN
168-GN
168-GN
ATCH
REFUELING RELAY
7Y-5490
B957-GN
F
365-YL
1
323-WH
200-BK
124-GN-14
3
1
4
2
168-GN
B957-GN
F
E
307-OR
519-PK
500-BR
501-GN
H
B
AB
PLATFORM
506-PU
D760-YL
615-YL
6 5 4
Q
124-GN-14
103-YL
103-YL
235-BK
615-YL
D761-GN
615-YL
103-YL
500-BR
501-GN
D760-YL
118-GY
113-OR
129-BU
403-GN
410-WH
B955-YL
B956-PK
B731-WH
B730-OR
A769-GY
200-BK-14
A768-BU
185-YL
185-YL
200-BK
147-PU
586-BR
152-BU
A763-GY
B751-YL
B739-WH
200-BK-6
B789-BR
6
B740-OR
B790-OR
5
B786-BU
326-PU
4
308-YL
310-PU
105-BR
A758-BR
A757-GY
A756-BU
D764-GN
A755-PK
RD-00
200-BK
320-OR
10
1
2
3
4
5
9
8
7
6
B734-GY
306-GN
501-GN
ATCH
A/C UNIT
107-1994
1
2
AM-FM RADIO
D764-GN
3
307-OR
152-BU
575-YL
576-PK
306-GN
320-OR
L
501-GN
2
118-GY
F
1
200-BK
118-GY
+
S
L4
200-BK
+1
-
MOTOR
200-BK
L7
L7
Q
F
5
4
3
1
BB
B B
BB
AA
365-YL
E
EE
B
B
B
B
GB
GA
G
G
322-GY
616-BU
607-PK
323-WH
D761-GN
A
200-BK
615-YL
102-8041
C
D
D
B
C
BB
C
B
C
C
C
C
309-GY 308-YL
RESISTOR
7Y-8242
501-GN
3 2
2 1
C
B
A
129-BU
K
M
OPERATOR STATION
ZZZZ
RELAY PANEL
MOTOR
200-BK
575-YL
152-BU
576-PK
MOTOR
-
+1
S
+
B751-YL
200-BK
B740-OR
185-YL
B789-BR
B739-WH
4
6
1
3
B731-WH
5
2
B790-OR
A763-GY
185-YL
578-BU
152-BU
2
575-YL
551-YL
953-GY
951-PK
152-BU
576-PK
147-PU
D761-GN
1
200-BK
185-YL-14
578-BU
586-BR
2
7
8
9
5
4
3
6
1
10
B730-OR
NOTE F
NOTE F
NOTE F
NOTE F
NOTE F
NOTE F
NOTE E
NOTE E
NOTE E
QQ 117-7332
RR 117-7253
SS 115-7124
TT 115-7126
UU 115-7125
KK 115-1263
LL 114-4876
MM 113-9860
NN 112-3336
PP 122-0383
Q 113-2486 NOTE F
ATCH-PRESSURE SW
6C6806
ATCH-BUZZER
113-4683
ATCH-SW AS.ROCKER
7X6386
YL
BR586-BR
D761-GN
2
1
200-BK
10
1
2
3
4
5
9
8
7
6
W
586-BR
W
200-BK
3
2
1
NN
T
200-BK
T
235-BK
235-BK
578-BU
235-BK
311-WH
311-WH
WW
6
310-PU
200-BK
513-OR
1
152-BU
200-BK
B955-YL
2
586-BR
2
1
A537-PK
403-GN
A770-PK
Q
551-YL
955-BU
951-PK
323-WH
320-OR
112-PU-14
147-PU
1
2
A768-BU
3
A771-PU
A769-GY
5
4
3
2
1
A768-BU
10
763-BU
1
2
B965-GY
B964-YL
142-BU-14
491-PK
1
D761-GN
112-PU-14
1
2
L30
586-BR
616-BU
3
322-GY
607-PK
323-WH
2
365-YL
B957-GN
112-PU-14
4
112-PU-14
235-BK
495-GN
A768-BU
A762-PU
B
A
147-PU
FOR A SINGLE SHEET VERSION OF THIS SCHEMATIC
CONTACT DESIGN CONTROL.
UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAGE.
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF.
THIS SCHEMATIC IS FOR THE 322 EXCAVATOR.
HH 5I-8398 E-10
GG 7Y-3946 E-10
FF 5I-8399 E-11
EE 7Y-3948 A-12
DD 7Y-3947 D-9
CC 5I-8397 E-10
BB 7Y-3946 E-10
AA 5I-8396 E-11
CABLE AS.
A
VV 7Y-3941 D-7
WIRE AS.
A
R 7Y-8105 D-6
U 5I-8374 D-3
CAB
791-PK
4
788-YL
V 5I-8375 E-5
405-GY
PLATFORMCHASSIS
5
9
326-PU
PLATFORM
B
492-GY
101-RD-6
304-WH-8
A A
E
E
AA
VV
J
B
B
P 102-7867 A-2
N 102-7866 B-2
M 6C-9362 F-2
L 102-7902 E-5
K 7Y-3868 F-3
J 7Y-3921 C-3
H 5I-8215 D-4
G 124-9202 F-9 NOTE E
F 117-5646 E-2
E 6C-9117 E-2
D 116-8177 C-12
C 5I-8268 B-12
A 114-3861 D-4
GY
PU
BR
RED
WHITE
ORANGE
YELLOW
PINK
ABBREV COLOR
BLACK
GRAY
PURPLE
BROWN
DESCRIPTIONSYMBOL
CONNECTOR
ELECTRICAL CONNECTION
TO VEHICLE STRUCTURE
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
BLADE, SPADE, RING,
OR SCREW TERMINAL
BK
PK
YL
OR
WH
RD
GN
BU
GREEN
BLUE
CIRCUIT CONNECTED
CIRCUIT NOT CONNECTED
ATCH WIRE, CABLE,
COMPONENT
L#
CIRCUIT GROUPING
DESIGNATION
IDENT PART NO. LOC
403-GN
A762-PU
C
B
109-OR-6
B
F
E
F
A
B
B
B
B
A
J
309-GY
HARNESS AS.
L
BK
235-BK
AERIAL
ANTENNA
6C3431
120-YL
D764-GN
CHASSIS
B965-GY
4I6118
CAB E
F
F
B
200-BK
616-BU
616-BU
200-BK
788-YL
ATCH
BOOM LAMP
5I-8250
BK/PK
8
B964-YL
A771-PU
A762-PU
788-YL
763-BU
A769-GY
A768-BU
763-BU
495-GN
L1
L2
L4
152-BU
492-GY
B965-GY
B964-YL
491-PK
586-BR
616-BU
BK-00
142-BU-14
405-GY
1
2
321-BR
491-PK
L1
B956-PK
152-BU
576-PK
306-GN
CHASSIS
A769-GY
586-BR
304-WH-8
UPPER WIPER
6C9102
310-PU
616-BU
OPERATOR STATION
BK
OPERATOR STATION
BK-18
101-RD-6
326-PU
576-PK
109-OR-6
403-GN
578-BU
322-GY
519-PK
586-BR
BK-00
309-GY
G
BK-18
326-PU
607-PK
A769-GY
616-BU
A768-BU
322-GY
A768-BU
149-PU
323-WH
B734-GY
121-YL
NN
365-YL
410-WH
365-YL
235-BK
A758-BR
506-PU
A757-GY
495-GN
A756-BU
607-PK
A762-PU
788-YL
405-GY
A755-PK
326-PU
D761-GN
513-OR
105-BR
B786-BU
103-YL
142-BU-14
310-PU
NOTE E : COMMON TO 322,320.
B730-OR
FUEL
SENSOR
105-9993
5
6
7
2
B956-PK
101-RD-6
B955-YL
365-YL
B789-BR
S4
S3
S2
S1
COM
5
B790-OR
403-GN
B739-WH
112-PU-14
304-WH-8
B740-OR
326-PU
B730-OR
B731-WH
311-WH
185-YL
10
A771-PU
403-GN
1
109-OR-6
309-GY
2
NN
3
B731-WH
4
200-BK
6
4
3
1
5
2
6
4
3
152-BU
B789-BR
575-YL
A769-GY
308-YL
114-GN
ATCH
REFUELING SW
5C-6108
492-GY
WH
BK
Z
RD-00
A768-BU
403-GN
325-PK
149-PU
149-PU
OPTION SOLENOID
575-YL
COOLANT LEVEL SW
ENG OIL LEVEL SW
OPTION SENSOR
OPTION SW 1
OPTION SW 2
115-PK
B956-PK
115-PK
115-PK
114-GN
200-BK
114-GN
5
786-GN
2
OPTION RELAY 3
OPTION RELAY 2
OPTION RELAY 1
GLOW
RS232C RxD
RS232C TxD
PWM OUT -
PWM OUT +
200-BK
4
3
149-PU
ATCH
CAB LAMP
5I-8250
323-WH
115-PK
586-BR
405-GY
2
1
ATCH
REFUELING PUMP
6C-5572
S
B
B
365-YL
10
325-PK
1
5
616-BU
5
200-BK
200-BK
2
9
501-GN
308-YL
308-YL
200-BK
B789-BR
200-BK
501-GN
615-YL
519-PK
185-YL
ALTERNATOR
9W-3043
VV
322-GY
322-GY
308-YL
121-YL
B957-GN
607-PK
HORN
7Y-3919
500-BR
147-PU
SERVICE
METER
6T-7337
ATCH
CAB LAMP
5I-8250
152-BU
A
113-OR
A770-PK
A768-BU
320-OR
B955-YL
YL
B
365-YL
A771-PU
124-GN-14
200-BK
129-BU
185-YL-14
105-BR
X
X
RD
JJ
BK
H
LOWER WIPER
6C8438
N
P
P
N
586-BR
306-GN
200-BK
DOME LAMP
096-0721
118-GY
L29
HYD OIL
SENDER
4I-5394
WASHER RELAY
WIPER RELAY
CHASSIS LAMP RELAY
BOOM LAMP RELAY
GND
GND
+B (24V)
BACKUP SW 1
RS485 -
RS485 +
BACKUP SW 4
B964-YL
GOV ACTR -
ENG PICKUP SENSOR -
GOV ACTR SENSOR
TRAVEL SW (RIGHT)
ENG PICKUP SENSOR +
TRAVEL SOLENOID
FUEL LEVEL SENSOR
COOLANT SENDER
HYD OIL TEMP SENDER
TRAVEL ALARM
306-GN
MM
BU
B790-OR
615-YL
142-BU
410-WH
B965-GY
B739-WH
142-BU
763-BU
ATCH
TRAVEL ALARM
3T-1444
168-GN
B957-GN
142-BU
NOTE C : USE WITH SHORT BOOM.
200-BK
ENG/PUMP CONT
SOL
5I-8368
MM
RD
BK
RD
301-BU-10
308-YL
L26
AA
200-BK
B790-OR
BU
578-BU
B789-BR
B789-BRB790-OR
410-WH
B790-OR
185-YL
B740-OR
+
-
200-BK
200-BK
OPERATOR STATION
A
F
E
D
200-BK
200-BK
200-BK
1
2
C
CAB/CHASSIS LAMP
607-PK
322-GY
323-WH
200-BK-10
112-PU-14
506-PU
308-YL
491-PK
A771-PU
B965-GY
BK
RD
BR
GN
BU
PK
200-BK
BK
323-WH
500-BR
506-PU
B731-WH
L16
586-BR
519-PK
200-BK
310-PU
578-BU
519-PK
B
103-YL
2
MOTOR
BATMTR
S
G
MOTOR
BATMTR
S
G
B964-YL
763-BU
118-GY
495-GN
ENG GOV
ACTR
7Y-3914
200-BK
A761-PU
L20
2
1
G
7
6
RELAY PANEL
L20
L28
1
2
101-RD-6
1
326-PU
492-GY
321-BR
B957-GN
L16
A762-PU
ATCH
START AID
COOLANT TEMP SW
8C-3569
L25
306-GN
616-BU
786-GN
184-BU
L25
L20
A983-BU
RELAY PANEL
792-OR
405-GY
578-BU
788-YL
492-GY
200-BK
200-BK
405-GY
309-GY
L19
L15
109-OR-6
L15
326-PU
403-GN
325-PK
L18
L16
5
513-OR
L14
4
3
L5
200-BK-6
513-OR
200-BK
L4
311-WH
J
T~
J
J
H
2
788-YL
A762-PU
L8
ATCH
START AID
9G-4365
YY 4I-5450 D-9
RD-00
403-GN
BK-00
B
200-BK
L13
200-BK-10
CONT.GP RH
113-2531
200-BK
BK-00
P 5I-8369 A-2 NOTE C
BK
301-BU-10
BK
L5
RD-00 RD-00
2
2
B734-GY
308-YL
410-WH
1
A758-BR
A757-GY
L8
A756-BU
A755-PK
307-OR
B786-BU
B730-OR
B956-PK
A769-GY
4
B955-YL
200-BK
3
B789-BR
B790-OR
RD-00
A768-BU
D760-YL
185-YL
124-GN
A537-PK
122-BU
147-PU
B747-PU
122-BU
830-OR
828-WH
B739-WH
A
2
1
830-OR
828-WH
830-OR
828-WH
B740-OR
495-GN
109-OR-8
L6
235-BK
B730-OR
365-YL
365-YL
506-PU
BK-00
323-WH
607-PK
B731-WH
322-GY
XX 4I-5447 D-9
L17
142-BU-14
L13
616-BU
200-BK
586-BR
322-GY
200-BK
2
1
513-OR
A
200-BK
121-YL
1
T~
COOLANT TEMP
SENDER
4I-5394
308-YL
501-GN
304-WH-8
235-BK
MOTOR
495-GN
C
C
C B
B
304-WH-8
B
FF
AA
B
BATMTR
SG
B
IMPLEMENT SW
102-8041
B
L22
200-BK
266-BK
YY
XX
WW
WW
HH
DD
CC
200-BK
60A
BB
LL
J
491-PK
J
506-PU
JJ
L2
L1
B
BK
YL
K
E
L2
L6
KEY SW
9G-7641
200-BK
H
SS
403-GN
325-PK
365-YL
Y 117-7029
GOV ACTR +
S 113-2485 A-3 NOTE E
T 102-7872 A-3
491-PK
B 114-5268 B-9
142-BU-14
763-BU
B965-GY
B964-YL
A768-BU
A769-GY
1
2
PU
ATCH
REFUELING RELAY
7Y-5490
321-BR
1
A
129-BU
519-PK
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
8103-YL/RD
615-YL
113-OR500-BR
200-BK
2
501-GN
118-GY
578-BU
L17
2
WW 4I-5448 D-9
118-GY
311-WH
TRAVEL SW (LEFT)
A755-PK
501-GN
BK
576-PK
200-BK
L17
5
5
4
3
B751-YL
1
STARTER
8C-4774
B751-YL
B789-BR
A763-GY
D764-GN
RD-00
321-BR
1
310-PU
200-BK
A
121-YL
3
X 117-7028 C-6
8
L11
L12
4
L12
L10
7
5
U
2
1
2
A
A
L15
6
L10
L
B
4
3
L16
B
9
8
L21
6
506-PU
586-BR
147-PU
1
105-BR
410-WH
307-OR
615-YL
326-PU
B-
RD-00
B789-BR
120-YL
615-YL
200-BK
D
L2
L29
200-BK
5
ATCH
SEAT HEATER
2
1
2
200-BK
615-YL
501-GN
118-GY
WASHER
7T-8890
ATCH
LOWER WASHER
7T-8890
311-WH
321-BR
310-PU
2
1
308-YL
4
310-PU
3
2
500-BR
1
1
4
586-BR
200-BK
D761-GN
L1
10
6
5
4
2
9
7
8
1
A
A756-BU
H
A
1
500-BR
B739-WH
B790-OR
615-YL
B740-OR
A763-GY
Z 106-0026 E-5
103-YL
2
1
2
17
ENG/PUMP
CONT
106-0138
181
2
24
23
16
13
3
12
4
5
6
18
14
9
22
118-GY
1
7
8
21
2
20
B
19
17
15
10
11
10
11
21
31
23
28
8
9
6
7
19
20
30
40
36
37
38
39
29
27
13
2
1
CHASSIS
LAMP
5I-8251
ACCEL
BACKUP SW
7N-8008
GOV
BACKUP SW
3T-4405
439-YL
THROTTLE
POS SW
7Y-5465
V
PS VALVE
BACKUP SW
3T-4405
ATCH
HAMMER
CONT SOL
7Y-5005
CIGAR
LIGHTER
9W-0335
NEUTRAL
START SW
9W-2150
FAULT ALARM
3E-6328
MONITOR
7Y-5500
LOW IDLE SW
578-BU
ATCH
BOOM LAMP
5I-8250
24
4
3
14
2
35
25
1
PROVISION FOR
ATCH-SW
7X6387
142-BU
142-BU
3
2
168-GN
105-BR
308-YL
BACKUP SW 2
1
15
16
26
SIG
GND
OR
308-YL
24V+
615-YL
M
A768-BU
184-BU
2
323-WH
500-BR
4
501-GN
SIG
118-GY
GND
113-OR
5V+
120-YL
152-BU
103-YL
142-BU
152-BU
118-GY
121-YL
184-BU
5
103-YL
114-GN
113-OR
EPR VALVE +
EPR VALVE -
1
3
34
33
MONITOR ALARM
KEY SW
AUX HYD PRESS. SW
32
22
L21
L25
12
506-PU
200-BK
519-PK
121-YL
513-OR
R
C
L27
S
B
200-BK
A983-BU
792-OR
200-BK
791-PK
786-GN
200-BK
267-BK
266-BK
265-BK
OFF
264-BK
323-WH
235-BK
235-BK
RELAY PANEL
ON
ST
ENG
SHUTDOWN SOL
8C-3663
ENG OIL
SW
6T-1546
CHASSIS
B
B751-YL
BOOM RAISE PRESS. SW
D764-GN
BK-18
RD-18
ENG PICKUP
3E-7886
B957-GN
168-GN
121-YL
513-OR
168-GN
200-BK
A983-BU
G
109-OR-6
200-BK
BK-00
Z
REFUELING
120-YL
D760-YL
L26
7
L3
ATCH SEAT
HEATER SW
7X-6386
200-BK-14
103-YL
615-YL
500-BR
501-GN
118-GY
120-YL
265-BK
2
1
6
122-BU
7
8
9
5
HHGGFF
CCBB
BK-00
POS NEG
607-PK
200-BK
B734-GY
616-BU
322-GY
4
NEGPOS
BATTERY
3T-5760
3
2
POS NEG
L27
DISCONNECT SW
7N-0718
7N-0719 (NOTE D)
BLOCK AS.
7Y-5499
LOWER WASHER/WIPER
FUSE
10A 9W-1442
15A 9W-1441
20A 9W-1446
L14
L22
LA
L14L14
L22
L18
L21
L19
L24
TRAVEL SPEED
SOL
4I-5674
TRENCHING
SOL
4I-5674
L24
L20
L16
NEGPOS
L27 L28
1
10
5
7
8
3
2
1
9
4
HAMMER
A/C HEATER
6
10
CIGAR LIGHTER
BACKUP
START RELAY
9X-8124
MAIN RELAY
3T-0376
ALT BREAKER
9S-0174
200-BK
KEY SW
WASHER/WIPER
TRAVEL ALARM
ENG/PUMP CONT
DOME LAMP
HORN
SOLENOID
MONITOR
RADIO
10
1
2
3
4
5
9
8
7
BOOM LAMP
6
7
8
9
5
4
3
2
1
10
HORN RELAY
7Y-5490
BOOM LAMP RELAY
7Y-5490
WASHER RELAY
7Y-5490
CAB/CHASSIS LAMP
RELAY
7Y-5490
WIPER RELAY
7Y-5490
6
10A
10A
3
10A
10A
2
1
BU-18
B+
WD
ALT
T
10A
10A
10A
20A
ALTERNATOR (R TERM.)
10A
10A
15A
10A
307-OR
HARNESS CODE 1
HARNESS CODE 2
HARNESS CODE 3
607-PK
HARNESS CODE 4
152-BU
103-YL
320-OR
147-PU
124-GN-14
129-BU
185-YL-14
105-BR
113-OR
ENG OIL PRESS. SW
MOTOR
A758-BR
ATCH
START AID SW
7X-6387
2
A757-GY
519-PK
124-GN-14
306-GN307-OR
A763-GY
STRAP AS.
7G-1060
1
200-BK
320-OR
HYD OIL LEVEL SW
A757-GY
L9
10A
10A
B790-OR
THROTTLE DIAL S4
THROTTLE DIAL S3
THROTTLE DIAL S2
THROTTLE DIAL S1
IMPLEMENT SW
L28
TRENCHING SOLENOID
LEVEL FINISH SOLENOID
2
1
113-OR
200-BK
DIODE
121-1022
L1
L9 B734-GY
200-BK
200-BK
200-BK
322-GY
322-GY
200-BK
322-GY
2
1616-BU
200-BK 200-BK
616-BU
200-BK
A758-BR
403-GN
B
+
-
B786-BU
129-BU
GROUND
DATA -
DATA +
A756-BU
A755-PK
10A
308-YL
200-BK
15A
10A
K
+BATTERY
4
3
2
U
U
L10
10A
B734-GY
200-BK
575-YL
152-BU
576-PK
2
1
B786-BU
1
RADIO SW
7X-6386
200-BK
10
200-BK
200-BK
200-BK
NOTE F : COMMON TO 322,320,325,330.
JJ
Y
X
Y
X
117-5645
BOLT
117-5645
BOLT
CAB
F
WINDSHIELD SW
9G2795
500-BR
501-GN
E
CAB
E
615-YL
HORN
7Y-3920
2
1 11
0
1
2
PROVISION FOR
ATCH-SW
7X6388
1 11
0
1
2
1
9 8 7
9 8 7
L3
3
BACKUP
RESISTOR
102-8015
ATCH
BATTERY
3T-5760
(NOTE D)
