SENR6119
August 1993
350 & 350 L Excavators
Electrical System
9DK1-UP
7RK1-UP
©
1993 Caterpillar
All Rights Reserved
Printed in U.S.A.
A AA
2
A AA
1
2
325-PK-14
C
A
325-PK-14
200-BK-14
T
FUSE - A component in an electrical circuit that will open the circuit if too much current flows
through it.
REED SWITCH - A switch whose contacts are controlled by a magnet. A magnet closes the
contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch.
SENDER - A component that is used with a temperature or pressure gauge. The sender
measures the temperature or pressure. Its resistance changes to give an indication to the
gauge of the temperature or pressure.
RELAY (Magnetic Switch) - A relay is an electrical component that is activated by electricity.
It has a coil that makes an electromagnet when current flows through it. The electromagnet
can open or close the switch part of the relay.
CIRCUIT BREAKER (C/B) - A component in an electrical circuit that will open the circuit if too
much current flows through it. This does not destroy the circuit breaker and it can be reset to
become part of the circuit again.
SOLENOID - A solenoid is an electrical component that is activated by electricity. It has a coil
that makes an electromagnet when current flows through it. The electromagnet can open or
close a valve or move a piece of metal that can do work.
Harness And Wire Electrical Schematic Symbols
Socket
Pin
Pin or Socket
Number
Wire, Cable, or Harness
Assembly Identification
Single Wire
Connector
Circuit Number
Identification
Wire
Gauge
Wire
Color
Plug
Receptacle
9X-1123
Component
Part Number
Electrical Schematic Symbols And Definitions
1
1
1
2
2
Typical representation of a
Sure-Seal connector. The
plugand receptacle contain
both pins and sockets.
Typical representation of a
Deutsch connector. The
plug contains all sockets
and the receptacle contains
all pins.
MAGNETIC LATCH SOLENOID - A magnetic latch solenoid is an electrical component that is
activated by electricity and held latch by a permanent magnet. It has two coils (latch and unlatch)
that make electromagnet when current flows through them. It also has an internal switch that places
the latch coil circuit open at the time the coil latches.
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
Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Actuator - Governor
E-10 1
Sensor - Engine Speed
D-12
Alarm - Action
E-2 1A
Sensor - Fuel Level
F-10
Alarm - Travel
F-12 2
Sensor - Hydraulic Oil Temperature
A-11
Alternator
E-11 3
Solenoid - Air Conditioner Compress Clutch
E-12
D-8, 9 4
Solenoid - Bypass 1
D-10
A-2, 3, F-11 5
Solenoid - Bypass 2
D-10
Block - Terminal
B-4 1D
Solenoid - Engine Stop
B-12
B-4 2D
Solenoid - Hammer Controller
E-10
Controller
B-8 6
Solenoid - Heavy Lift 1
D-9
Converter
D-9 7
Solenoid - Heavy Lift 2
C-9
Dial - Engine Speed
E-3 1B
Solenoid - Heavy Lift 3
F-2
Fuse - Block
B-5,6 3D
Solenoid - Start Aid
F-12
F-1 8
Solenoid - Swing Power
C-9
Lamp - Boom
C-1 9
Solenoid - Travel Speed
A-10
Lamp - Cab
D-1 10
Speaker
D-8
Lamp - Chassis
B-2, F-1 11
Switch - Air Conditioner Refrigerant Press
E-12
Lamp - Dome
D-4 5A
Switch - Disconnect
A-3
Lighter - Cigar
E-2 2A
Switch - Engine Oil Press
D-12
Meter - Service
E-3 3A
Switch - Governor Backup
E-5
E-2 4A
Switch - Hammer Controller
E-4
Motor - Starter
B-12 12
Switch - Heavy Lift
F-4
Motor - Washer
F-10 13
Switch - Horn
F-3
Motor - Wiper
D-2 5A
Switch - Implement Press
D-10
Pump - Grease
B-2 14
Switch - Low Idle
E-3
Pump - Refueling
F-12 15
Switch - Neutral Start
F-2
D-8 16
Switch - Pump Backup
F-5
Relay - Boom Lamp
A-6 4D
Switch - Refueling
F-10
Relay - Cab Lamp
A-6 4D
Switch - Refueling Pump
F-12
Relay - Chassis Lamp
A-6 4D
Switch - Seat Heater
F-4
Relay - Horn
B-5 4D
Switch - Speed Change
E-5
Relay - Main
C-4 5D
Switch - Starter
D-4
Relay - Refueling Pump
A-5 4D
Switch - Start Aid
E-3
Relay - Start
B-4 6D
Switch - Start Aid Coolant Temperature
E-12
Relay - Washer
B-6 4D
Switch - Swing Press
C-9
Relay - Wiper
B-6 4D
Switch - Travel Press
D-10
Resistor - Backup
F-5 1C
Switch - Windshield
D-2
Seat - Heater
F-4 17
Unit - Air Conditioner
E-7
Sensor - Engine Coolant Temperature
E-12 18
Valve - Proportional Reducing
A-10
A =Connector in cab.
B = Connector in operator’s R.H. console.
C = Connector in operator’s L.H. console.
D = Connector in relay panel.
Connector Location
Connector
Machine
Location
Harness And/Or
Components
Schematic
Location
Connector
Machine
Location
Harness And/Or
Components
Schematic
Location
CONN3
A - 105-9921
B - 102-7938
F-9
CONN29
C - 7Y-5542
Engine Coolant Temperature Sensor
E-12
CONN1
*
A - 105-9921
Controller
A-8
CONN31
C - 7Y-5542
Engine Oil Press Switch
D-12
CONN 50
D
A - 105-9921
D - 105-9922
B-3
CONN22
A
E - 7Y-8280
Dome Lamp
D-4
24 Contacts
CONN2
*
A - 105-9921
Controller
B-8
CONN55
T - 7Y-5436
Speaker
D-8
CONN4
A - 105-9921
B - 102-7938
E-9
CONN65
T - 7Y-5436
Speaker
D-8
CONN33
A - 105-9921
C - 7Y-5542
C-12
CONN56
U - 7Y-5438
Converter
D-9
CONN12
B - 102-7938
G - 7Y-8283
E-4
CONN41
E
A - 105-9921
Bypass 1 Solenoid
D-10
CONN15
A
B - 102-7938
K - 102-7908
D-5
CONN46
E
A - 105-9921
Bypass 2 Solenoid
D-10
CONN7
C
B - 102-7938
N - 102-7915
F-6
CONN38
A - 105-9921
Fuel Level Sensor
F-10
CONN8
B - 102-7938
W - 102-7939
E-6
CONN53
A - 105-9921
Grease Pump
B-2
9 Contacts
CON N54
*
T - 7Y-5436
Radio
D-8
CON N36
E
A - 105-9921
Hammer Controller Solenoid
E-10
CONN37
A - 105-9921
Governor Actuator
E-10
CONN69
E
A - 105-9921
Heavy Lift 1 Solenoid
C-9
CONN18
B
G - 7Y-8283
Engine Speed Dial
E-3
CONN5
E
A - 105-9921
Heavy Lift 2 Solenoid
C-9
CONN32
A - 105-9921
C - 7Y-5542
C-12
CONN43
E
A - 105-9921
Implement Press Switch
D-10
CONN49
A - 105-9921
S - 102-7878
A-7
CONN45
A - 105-9921
Proportional Reducing Valve
A-10
CONN14
A
B - 102-7938
E - 7Y-8280
D-6
CONN68
A - 105-9921
Refueling Pump
F12
CONN16
A
B - 102-7938
K - 102-7908
D-5
CONN67
A - 105-9921
Refueling Pump Switch
F-12
CONN6
B - 102-7938
PP - 9X-9870
D-7
CONN66
A - 105-9921
Refueling Switch
F-10
CONN23
A
E - 7Y-8280
T - 7Y-5436
D-8
CONN26
A - 105-9921
Start Aid Solenoid
F-12
CONN23
A
E - 7Y-8280
U - 7Y-5438
D-9
CONN40
E
A - 105-9921
Swing Power Solenoid
C-9
CONN20
A
K - 102-7908
Monitor
E-2
CONN39
E
A - 105-9921
Swing Press Switch
C-9
CONN21
A
K - 102-7908
Wiper Motor
D-2
CONN47
A - 105-9921
Travel Alarm
F-12
CONN19
A
K - 102-7908
X - 7Y-3897
D-3
CONN42
E
A - 105-9921
Travel Press Switch
D-10
CONN9
A - 105-9921
SS - 105-9924
F-11
CONN44
A - 105-9921
Travel Speed Solenoid
A-10
3 Contacts
CONN48
A - 105-9921
F - 7Y-3983
(P - 7Y-3984)
C-7
CONN13
B - 102-7938
G - 7Y-8283
E-4
3 Contacts
2 Contacts
40 Contacts
10 Contacts
5 Contacts
4 Contacts
4C
4B
32
5B
19
20
21
22
1E
2E
23
3E
4E
5E
24
25
6E
26
27
28
29
30
2B
7B
5C
3C
7E
3B
2C
31
6B
33
8E
9E
6A
34
35
Machine
Location
Antenna
Battery
Breaker
Horn
Monitor
Radio
Connector Location
Connector
Machine
Location
Harness And/Or
Components
Schematic
Location
Connector
Machine
Location
Harness And/Or
Components
Schematic
Location
CONN24
B -102-7938
H - 7Y-8290
Z - 7Y-5504
F-2
CONN62
C
N - 102-7915
Heavy Lift Switch
F-4
CONN51
B - 102-7938
Heavy Lift 3 Solenoid
F-2
CONN64
C
N - 102-7915
Seat Heater
F-4
CONN10
C
B - 102-7938
J - 7Y-8285
F-3
CONN63
C
N - 102-7915
Seat Heater Switch
F-4
CONN27
C - 7Y-5542
Air Conditioner Compress Clutch
Solenoid
E-12
CONN25
A
R - 7Y-3985
V - 7Y-5422
(M - 7Y-5421)
D-2
CONN28
C - 7Y-5542
Air Conditioner Retngerant Press
Switch
E-12
CONN57
U - 7Y-5438
Converter
D-9
CONN30
C - 7Y-5542
Engine Speed Sensor
D-12
CONN11
B
W - 102-7939
Hammer Controller Switch
E-4
CONN35
C 7Y-5542
Start Aid Coolant Temperature
Switch
E-12
CONN34
A - 105-9921
C - 7Y-5542
C-12
CONN52
F - 7Y-3983
L - 7Y-3978
(P - 7Y-3984)
C-2
CONN61
A
E - 7Y-8280
R -7Y-3985
D-2
CONN17
B
G - 7Y-8283
Start Aid Switch
E-3
CONN58
B
G - 7Y-8283
Low Idle Switch
E-3
CONN60
A
K - 102-7908
Action Alarm
E-2
CONN59
C
J - 7Y-8285
Horn Switch
F-3
2 Contacts
2 Contacts
1 Contact
F-10
6
2
7
8
2
3
9
4
7
6
35
10
25
26
24
8
6
7
22
23
19
20
5
4
3
2
1
18
17
9
15
14
13
9
12
11
21
5
4
1
1
2
3
4
1
3
5
28
27
29
4
31
30
33
32
8
1
2
4
11
16
3
34
10
6
7
5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
32
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
35
33
34
16
30
31
33
34
A
3
4
5
8
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
35
33
34
36
9
7
11
6
10
A
3
4
5
6
8
9
11
11
17
14
15
13
16
B
C
D
E
1
7
12
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
35
33
34
36
2
10
Machine Harness And Component Locations
1
2
3
4
5
6
7
8
9
3
4
5
6
8
9
1
2
7
AREA E
3500005
Area A
Area B
3
4
5
6
1
2
3
4
5
6
1
2
7
1
2
3
4
1
2
3
4
5
6
7
8
9
10
11
Area C
Area D
1
2
3
4
5
6
7
3
4
5
4
2
1
1
1
2
5
6
1
2
3
2
3
1
1
4
2
F
E
D
C
B
A
12 11 10
12 11 10
9 8 7
9
8 7
6 5 4
6 5 4
3 2 1
F
E
D
3 2 1
C
B
A
1
2
B749-GN
B737-GN
2
1
1
2
BK-18
2
WH
YL
BK
RD
1
1
2
1
2
2
1
2
1
142-BU
B783-OR
A771-PU
200-BK
1
2
265-BK
BK
235-BK
RD
201-BK
763-BU
2
1
2
B737-GN
B749-GN
491-PK
201-BK
A769-GY
1
A768-BU
410-WH
113-OR
B783-OR
A771-PU
BK-18
ATCH
CAB LAMP
5I-8250
WINDSHIELD
SW
9G-2795
BLOWER
MOTOR
9X-9363
U
A769-GY
ATCH
CAB LAMP
5I-8250
BOOM LAMP
5I-8250
ATCH
BOOM LAMP
5I-8250
1
4
3
2
B730-OR
235-BK
B731-WH
A768-BU
RESISTOR
9X-4383
MOTOR
ATCH
THERMOSTAT
3E-5464
BLOWER SW
6P-3236
124-GN-14
521-YL-14
ATCH
ETHER
START SW
7X-6387
DISCONNECT
SW
7N-0719
1
2
1
200-BK-14
522-WH-14
1
2
MOTOR
1
2
MOTOR
L
H
T
2
1
3
4
2
ANTENNA
7Y-5435
ATCH GREASE PUMP
4I-8476
ATCH
CAB LAMP
(HEAD GUARD)
5I-8252
ATCH
CAB LAMP
(HEAD GUARD)
5I-8252
OPERATOR STATION
OPERATOR STATION OPERATOR STATION
OPERATOR STATION
2
1
2
3
4
1
1
2
5
4
3
SPEAKER RH (-)
SPEAKER RH (+)
BACKUP
ILLUMI (+)
GND
ACC (+)
SERVICE
METER
6T-7337
+BATTERY
DATA +
DATA -
GROUND
WIPER
7X-1984
1
2
CIGAR
LIGHTER
9W-0335
ACTION ALARM
3E-6328
105-BR
307-OR
DOME LAMP
8C-9678
KEY START SW
9G-7641
1
4
3
GROUND
BK-18
3
1
2
WH-18
RD-18
3
7
9
8
2
6
4
1
5
HORN SW
6I-5088
NEUTRAL
START SW
9W-2150
CHASSIS
LAMP
5I-8250
R
C
S
B
OFF
ON
ST
2
POSNEGPOSNEG
BATTERY
9G-4247
150-OR
150-OR
L31
B749-GN
B737-GN
200-BK
D777-PU
150-OR
D777-PU
307-OR
D777-PU
D777-PU
150-OR
150-OR
200-BK
SS
SS
L14
L9
L13
L17
L15
L16
L12
L10
L9
A768-BU
A769-GY
763-BU
172-GN
D777-PU
150-OR
L11 L12
L31
C
L10
L10
L9
L14
L12
SPEAKER LH (+)
SPEAKER LH (-)
T
508-PU
509-GN
SPEAKER 7Y-5434
200-BK
124-GN
200-BK
124-GN
BK
RD
124-GN
200-BK
ATCH
SEAT
HEATER
100-7729
ATCH
SEAT
HEATER SW
7X-6386
A537-PK
A537-PK
2
1
2
1
172-GN
A754-GY
B733-YL
113-OR
A761-PU
405-GY
522-WH-14
325-PK
506-PU
3
4
1
2
495-GN
201-BK
788-YL
A762-PU
311-WH
492-GY
113-OR
403-GN
200-BK
326-PU
A754-GY
B733-YL
D777-PU
A754-GY
B733-YL
WH-18
BK-18
JJBBGG
325-PK
ATCH
REFUELING SW
5C-6108
B733-YL
172-GN
172-GN
BYPASS 1
SOL
7T-9746
A
A754-GY
BYPASS 2
SOL
7T-9746
ENG
SPEED SENSOR
3E-7886
BK-00
RD-00
RD-00
109-OR-4
BK-00
RD-00
200-BK-14
323-WH-14
325-PK
365-YL
ATCH
REFUELING
PUMP
102-6168
113-OR
492-GY
201-BK
CHASSIS
200-BK
201-BK
201-BK
200-BK
200-BK
326-PU
CHASSIS
B955-YL
RADIO FOR OUTSIDE JAPAN
RADIO FOR JAPAN
2
1
2
1
FUEL
LEVEL
SENSOR
7Y-3848
BK
YL
A768-BU
492-GY
403-GN
A761-PU
A762-PU
788-YL
113-OR
4
3
2
1
B
495-GN
491-PK
BK
RD
101-RD-4
BK
W
E
121-YL
D
615-YL-14
A
113-OR
120-YL
124-GN-14
103-YL
129-BU
147-PU
501-GN
500-BR
506-PU
105-BR
320-OR
322-GY
306-GN
304-WH-8
308-YL
109-OR-4
403-GN
522-WH-14
113-OR
120-YL
124-GN-14
103-YL
129-BU
147-PU
501-GN
500-BR
310-PU
105-BR
320-OR
322-GY
306-GN
308-YL
A769-GY
B789-BR-14
B739-WH-14
B790-OR-14
B740-OR-14
B731-WH
B730-OR
A758-BR
A757-GY
A756-BU
A755-PK
615-YL-14
2
607-PK-14
B956-PK
410-WH
535-BU
118-GY
B786-BU
1
4
3
2
1
A762-PU
200-BK
788-YL
103-YL
PP
ATCH HYD
HAMMER
CONT SW
7X-6386
405-GY
150-OR
MOTOR
WASHER
MOTOR
7T-8890
PP
PP
PP
PP
PP
109-OR-4
308-YL
101-RD-4
304-WH-8
109-OR-4
788-YL
A762-PU
405-GY
113-OR
109-OR-8
403-GN
109-OR-4
492-GY
535-BU
118-GY
607-PK-14
9X-9870 D-7
F-27Y-5504
A
A
D
BK
RD
Z (NOTE C)
L20
2
D777-PU
118-GY
535-BU
410-WH
B956-PK
607-PK-14
1
ATCH
REFUELING
PUMP SW
7Y-8263
615-YL-14
A755-PK
113-OR
A756-BU
A757-GY
A758-BR
321-BR
B730-OR
A761-PU
B731-WH
142-BU
B740-OR-14
405-GY
B790-OR-14
491-PK
B739-WH-14
B789-BR-14
308-YL
306-GN
322-GY
320-OR
NOTE C : USE WITH CAB RISER
105-BR
500-BR
501-GN
147-PU
129-BU
103-YL
124-GN-14
120-YL
113-OR
615-YL-14
200-BK-14
A
B786-BU
410-WH
B956-PK
A755-PK
A756-BU
A757-GY
A758-BR
B730-OR
B731-WH
B740-OR-14
B790-OR-14
B739-WH-14
B789-BR-14
B955-YL
B738-BR
B955-YL
201-BK
ATCH
HEAVY
LIFT 2
SOL
6I-6826
150-OR
D776-WH
ENG
SHUTDOWN
SOL
3E-7985
A
ALT
GROUND
G S
MTR BAT
MOTOR
SIGNAL
BK
YL
OR
STARTER
4N-3181
D776-WH
BYPASS 2 SOL
633-BU-14
200-BK-4
109-OR-4
616-BU-14
403-GN
113-OR
A
492-GY
C
201-BK
B
R
+
COLD WEATHER
Z
200-BK-4
101-RD-4
200-BK-10
304-WH-8
1
3
4
2
SS A
2
325-PK
1
200-BK-14
D776-WH
4
6
323-WH-14
323-WH-14
ATCH
HAMMER
CONT SOL
7Y-5005
365-YL
RR
2
1
SWING
PRESS. SW
4I-5387
SWING
POWER SOL
6I-6826
403-GN
320-OR
322-GY
109-OR-4
140-BU
101-RD-4
121-YL
172-GN
786-GN
607-PK-14
A983-BU
A762-PU
304-WH-8
792-OR
325-PK
535-BU
506-PU
616-BU-14
791-PK
501-GN
150-OR
633-BU-14
150-OR
513-OR-14
365-YL
521-YL-14
B786-BU
118-GY
HARNESS AS.
200-BK
311-WH
LOCPART NO.
129-BU
142-BU
500-BR
200-BK
113-OR
150-OR
105-BR
124-GN-14
365-YL
521-YL-14
147-PU
120-YL
103-YL
184-BU-14
615-YL-14
112-PU-12
IDENT
CIRCUIT GROUPING
DESIGNATION
586-BR
323-WH-14
ATCH
HEAVY
LIFT 1
SOL
4I-6158
#L
ATCH WIRE, CABLE,
COMPONENT
CIRCUIT NOT CONNECTED
CIRCUIT CONNECTED
112-PU-12
BLUE
GREEN
112-PU-14
112-PU-14
112-PU-14
101-RD-14
BU
GN
RD
WH
OR
YL
PK
BK
BLADE, SPADE, RING,
OR SCREW TERMINAL
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
ELECTRICAL CONNECTION
TO VEHICLE STRUCTURE
CONNECTOR
SYMBOL DESCRIPTION
BROWN
PURPLE
GRAY
BLACK
COLORABBREV
PINK
YELLOW
ORANGE
WHITE
RED
BR
PU
GY
A 105-9921
B 102-7938
C
1
32
7Y-5542
B738-BR
D 105-9922
5
513-OR-14
E
2 3
7Y-8280
F
AIR CONDITIONER UNIT
7Y-3983
103-YL
615-YL-14
120-YL
147-PU
522-WH-14
521-YL-14
124-GN-14
320-OR
G 7Y-8283
H
322-GY
113-OR
306-GN
129-BU
607-PK-14
501-GN
535-BU
500-BR
118-GY
A763-GY-14
B751-YL-14
B789-BR-14
B739-WH-14
B790-OR-14
B740-OR-14
A769-GY
B731-WH
B730-OR
A768-BU
7Y-8290
308-YL
403-GN
410-WH
B956-PK
B955-YL
310-PU
B786-BU
105-BR
326-PU
A758-BR
A757-GY
A756-BU
A755-PK
J 7Y-8285
K
103-YL
615-YL-14
120-YL
147-PU
522-WH-14
521-YL-14
124-GN-14
320-OR
102-7908
L 7Y-3978
322-GY
113-OR
306-GN
129-BU
607-PK-14
501-GN
535-BU
500-BR
118-GY
A763-GY-14
B751-YL-14
B789-BR-14
B739-WH-14
B790-OR-14
B740-OR-14
A769-GY
B731-WH
B730-OR
A768-BU
M
308-YL
403-GN
410-WH
B956-PK
B955-YL
310-PU
B786-BU
105-BR
326-PU
7Y-5421
A758-BR
N
ATCH
A/C COMPR
CLUTCH SOL
8T-8813
102-7915
P 7Y-3984
R
S
T 7Y-5436
U
7Y-5422
PLATFORM
V
102-7939
306-GN
201-BK
410-WH
B955-YL
B956-PK
113-OR
102-7878
118-GY
501-GN
500-BR
535-BU
A-7
CABLE AS.
201-BK
200-BK-14
515-GY-14
201-BK
AA 7Y-5545 A-2
BB
200-BK-14
A-3
CC
124-GN-14
522-WH-14
521-YL-14
120-YL
200-BK
129-BU
201-BK
B786-BU
7Y-5547
403-GN
A-3
DD
10
A-3
200-BK
492-GY
788-YL
101-RD-4
EE 7Y-5548
FF 7Y-8299
GG
616-BU-14
633-BU-14
7Y-3975
308-YL
D776-WH
JJ
121-YL
7Y-3976
615-YL-14
184-BU-14
THIS SCHEMATIC IS FOR THE 350 EXCAVATOR.
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF.
792-OR
A983-BU
786-GN
791-PK
UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAGE.
B-4
185-YL-14
120-YL
124-GN-14
103-YL
129-BU
150-OR
C-4
B-4
F-11
B738-BR
586-BR
CHASSIS
BOOM
501-GN
500-BR
506-PU
172-GN
10A
140-BU
185-YL-14
115-PK-14
15A
149-PU-14
112-PU-14
142-BU
105-BR
112-PU-14
10A
10A
786-GN
115-PK-14
791-PK
615-YL-14
616-BU-14
115-PK-14
149-PU-14
786-GN
786-GN
149-PU-14
633-BU-14791-PK
115-PK-14
19
31
F-11
F-9
A-12
7Y-5503
7Y-5502
607-PK-14
1
B789-BR
B738-BR
235-BK
586-BR
147-PU
BOOM
LAMP
RELAY
7Y-5490
A
TRAVEL
SPEED
SOL
7I-1245
RD
PROPORTIONAL
REDUCING
5I-8368
267-BK
266-BK
265-BK
264-BK
16
9
24
4
11
5
2
8
22
10
235-BK-14
14
3
18
23
6
12
21
15
20
7
19
17
1
200-BK
7Y-5501
7Y-8297
7Y-5546
MM
LL
KK
D-2
D-3
E-6
D-2
D-8
C-7
31
21
11
23
26
410-WH
27
30
20
7
B956-PK
A755-PK
40
A756-BU
36
A757-GY
19
6
9
8
29
39
38
37
28
13
10
A758-BR
15
16
14
ATCH
HEAVY LIFT
SW
7X-6386
586-BR
B738-BR
24
A
A
A
A
25
35
12
B730-OR
1
B731-WH
500-BR
22
32
33
34
2
B740-OR-14
13
B790-OR-14
ONE TOUCH
LOW IDLE SW
6I-5088
5
B739-WH-14
B789-BR-14
F-6
PREHEAT
RS232 RXD
RS232 TXD
792-OR
HEAVY LIFT 1,2 SOL
B955-YL
501-GN
OPERATOR STATION
B790-OR
A757-GY
A756-BU
A755-PK
GOV ACT BU SW +
307-OR
1
2
B751-YL-14
A763-GY-14
B789-BR-14
B739-WH-14
B790-OR-14
B740-OR-14
B790-OR
147-PU
6
4
A
A
SS
A
113-OR
D-2
C-2
D-5
F-3
F-2
105-9924
E-4
MONITOR
102-7891
5
323-WH-14
301-BU-10
C-7
200-BK-10
326-PU
201-BK
D-6
2
1
GOV ACT BU SW -
FUSE
10A 9W-1442
15A 9W-1441
20A 9W-1446
B-3
C-12
323-WH-14
NOTE B : USE WITH OVHD GUARD
365-YL
F-11
506-PU
365-YL
A983-BU
A-4
F-8
535-BU
506-PU
4
105-9923
B737-GN
17
B738-BR
7Y-3985
365-YL
NOTE A : USE WITH SHORT BOOM
168-GN-14
405-GY
A771-PU
763-BU
F-9
7Y-3897
W
B957-GN
113-OR
235-BK
405-GY
403-GN
492-GY
235-BK
200-BK
RELAY BOX
320-OR
495-GN
BK
BK
OPTION VALVE -
201-BK
403-GN
U
OPTION VALVE +
A
BB
AA
OPTION SENSOR
WIPER
RELAY
7Y-5490
WASHER
RELAY
7Y-5490
DD
CC
10
R
500-BR
R
EE
GG
AA
A
A
9
168-GN-14
BK
168-GN-14 REFUELING
BR
320-OR
B956-PK
10A
322-GY
D777-PU
308-YL
326-PU
105-BR
HORN
RELAY
7Y-5490
U
320-OR
322-GY
114-GN
FUSE & RELAY PANEL
B786-BU
310-PU
535-BU
607-PK-14
306-GN
RELAY BOX
235-BK
B786-BU
105-BR
310-PU
FUSE & RELAY PANEL
FUSE & RELAY PANEL
326-PU
308-YL
A758-BR
A757-GY
A756-BU
A755-PK
ALTERNATOR
5S-9088
ATCH
ALTERNATOR
3E-7577
(HIGH CAPACITY)
322-GY
10A
10A
LOW IDLE SW
B786-BU
GOV ACT +
EP SOL -
10A
EP SOL +
ACCEL SW TERM S1
ACCEL SW TERM S2
118-GY
ACCEL SW TERM S3
RELAY BOX
ACCEL SW TERM S4
DATA -
GOV ACT -
DATA +
FAULT ALARM
KEY SW ON 308-YL
15A
L17
L6
10A
15A
10A
10A
L4
L5
U
OPTION SW 2
ATCH
REFUELING
PUMP
RELAY
7Y-5490
616-BU-14
A755-PK
BA
L10
A756-BU
A757-GY
A758-BR
L14
B738-BR
T
L12
L6
L13
5
L3
L16
4
T
TO RADIO
CONVERTER
7T-8000
C
BK
C
C
C
C
112-PU-14
149-PU-14
A
A
A
149-PU-14
F
B
112-PU-14
184-BU-14
142-BU
140-BU
103-YL
120-YL
J
121-YL
N
B
HEAVY LIFT
HEATER
N
A768-BU
W
B
E
JJ
KK
LL
A768-BU
GB
B
B B
310-PU
COOLANT LEVEL SW
B
GN
C
201-BK
L15
H H
H
K X
X
K
K K
K
V (NOTE B)
M
M
V
M
GROUND
L2
L1
L11
235-BK
L18
586-BR
L20
L19
E
E
235-BK
B738-BR
N
V
BK-00
F
F
P
L28
1
2
3
L
L27
L
P (NOTE A)
D A
L26
IMPLEMENT
PRESS. SW
4I-5387
4
5
20A
10A
129-BU
112-PU-12
113-OR
112-PU-12
101-RD-14
RADIO
SWING
121-YL
MONITOR
120-YL
20A
OPTION RELAY 1
129-BU
G
172-GN
306-GN
304-WH-8
308-YL
109-OR-4
OPTION RELAY 2
S4
CHASSIS LAMP RELAY
142-BU
113-OR
BOOM LAMP RELAY
WORK/TR
WASHER RELAY
WIPER RELAY
792-OR
A983-BU
CIGAR
WH/RD-14
CHASSIS
LAMP
RELAY
7Y-5490
A
ATCH
BOOM
LAMP
RELAY
7Y-5490
BK-14
791-PK
321-BR
ATCH
CAB
LAMP
RELAY
7Y-5490
121-YL
B783-OR
506-PU
535-BU
786-GN
405-GY
311-WH
791-PK
S3
B955-YL
D776-WH
2
G
9
FRONT LINK PR SW
ATCH PR SW
B749-GN
201-BK
HAMMER
HARN CODE 1
200-BK
GREASE
150-OR
124-GN-14
KEY
10A
10A
8
311-WH
112-PU-14
112-PU-14
112-PU-14
521-YL-14
109-OR-4
109-OR-8
2
L10
1
101-RD-14
L24
L9
522-WH-14
101-RD-14
200-BK
308-YL
304-WH-8
200-BK
321-BR
306-GN
112-PU-12
ALT
BREAKER
9S-4693
L25
112-PU-12
101-RD-4
BACKUP
172-GN
147-PU
112-PU-14
101-RD-14
118-GY
105-BR
506-PU
535-BU
A983-BU
501-GN
792-OR
500-BR
3
SWING POWER SOL
WORK MODE 1 SOL
TRAVEL PR SW
SWG BRK PR SW
HARN CODE 2
SPEED
CHANGE
SW
7N-8008
HARN CODE 3
HARN CODE 4
BACKUP
GOVERNOR
SW
3T-4405
BU
START
RELAY
9X-8124
495-GN
B
K
MAIN RELAY
3T-0376
101-RD-14
TRAVEL
PRESS. SW
4I-5387
80
PK
10A
ATCH
BATTERY
9G-4247
NEGPOS
NEG
POS
2
L24
L23
B783-OR
BK
535-BU
114-GN
118-GY
607-PK-14
184-BU-14
BK-18
HORN
114-GN
CONTROL
103-YL
TR ALARM
DOME LAMP
633-BU-14
WIPER
615-YL-14
200-BK
B749-GN
L13
Y 7Y-3981
321-BR
F-8
615-YL
ENG OIL
PRESS. SW
9X-4276
103-YL
ATCH
COOLANT
TEMP
ETHER SW
9X-9970
ATCH A/C
REFRIGERANT
PRESS. SW
8T-8639
1
120-YL
7Y-5438
586-BR
D777-PU
HEAVY LIFT 3 SOL
A763-GY-14
B751-YL-14
K
B
YL
121-YL
G
G
BU
PU
BK
5
4
3
CHASSIS
HH
L18
172-GN
142-BU
109-OR-4
RD-18
2
172-GN
304-WH-8
D-9
101-RD-4
113-OR
START
RESISTOR
102-8017
L22
HH
121-YL
321-BR
150-OR
GND
ATCH
ETHER
SOL
9G-4365
HYD OIL
TEMP
SENDER
4I-5394
NN (NOTE C)
Y (NOTE C)
L19
607-PK-14
140-BU
+BATTERY
+B
403-GN
109-OR-4
C
T
A758-BR
200-BK-4
A
306-GN
307-OR
D
185-YL-14
185-YL-14
113-OR
185-YL-14
S2
S1
185-YL-14
COM
185-YL-14
1
2
3
1
185-YL-14
185-YL-14
6
5
4
3
12
5
2
1
522-WH-14
SIG
GND
OR
7
6
8
A762-PU
4
L5
3
2
1
521-YL-14
CHASSIS
BACK UP SW B
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
L21
BU-18
788-YL
24V+
2
4
3
1
OR
BR
GY
GN
P
1
6
10
5
N
9
8
3
2
ANTENNA
7Y-5435
N
6
7
PP
E
B
5
A
135-BU
X
A
616-BU-14
147-PU
M
L4
L3
2
1
A
521-YL-14
W
7
10
D
7
6
786-GN
791-PK
320-OR
200-BK
607-PK-14
W
T
8
9
CHASSIS
CHASSIS
4
18
A769-GY
A768-BU
B731-WH
B730-OR
W
W
E-10
FF
BLOCK AS.
9G-8451
A
4
5I-8358
3
2
200-BK
522-WH-14
501-GN
A
235-BK
CHASSIS
1
BK-00
311-WH
X
326-PU
491-PK
495-GN
RD-00
B738-BR
113-OR
HH
235-BK
SIG
172-GN
F-8
ENG
PUMP
CONTROLLER
5I-8366
4
3
10
L8
SPEAKER 7Y-5434
L8
BK-00
A757-GY
A756-BU
2
WIRE AS.
2
1
A755-PK
200-BK
235-BK
118-GY
7Y-8299
1
A
ENG
GOVERNOR
ACTUATOR
7Y-3991
NN
150-OR
B
L7
L27
L26
G
J
150-OR
J
B
AM/FM RADIO
7Y-5437
410-WH
1
2
L1
113-OR
1
L29
129-BU
L2
RD-00
235-BK-14
L1
185-YL-14
B956-PK
L5
2
2
201-BK
403-GN
L2
L4
36
35
26
25
16
15
6
5
39
38
37
34
33
32
30
29
28
L3
27
L30
L29
L21
3
4
24
23
22
21
20
18
17
14
13
12
11
10
9
8
7
4
3
2
1
D776-WH
D
L28
L7
N
N
40
COOLANT
TEMP
SENSOR
3E-5370
5
200-BK
120-YL
A
150-OR
10
1
3
201-BK
4
2
6
615-YL-14
9
8
200-BK-14
7
9
235-BK
200-BK
103-YL
1
200-BK
235-BK
8
200-BK
235-BK
7
235-BK-14
6
-
A761-PU
147-PU
306-GN
200-BK
B955-YL
A763-GY-14
B789-BR-14
RD-00
TRAVEL SPD SOL
763-BU
A771-PU
B737-GN
STOP
BK-00
517-BU-14
516-GN-14
515-GY-14
521-YL-14
124-GN-14
200-BK-14
522-WH-14
515-GY-14
516-GN-14
517-BU-14
5
103-YL
H
RD-00
RD-00
512-GN
511-BR
103-YL
615-YL
200-BK
120-YL
322-GY
BK-00
B751-YL-14
A762-PU
308-YL
586-BR
788-YL
311-WH
310-PU
C
500-BR
320-OR
322-GY
140-BU
121-YL
172-GN
786-GN
607-PK-14
A983-BU
201-BK
792-OR
535-BU
506-PU
616-BU-14
791-PK
501-GN
633-BU-14
118-GY
129-BU
B751-YL-14
185-YL-14
142-BU
500-BR
535-BU
113-OR
235-BK
B739-WH-14
B790-OR-14
103-YL
501-GN
150-OR
105-BR
124-GN-14
120-YL
103-YL
A763-GY-14
308-YL
200-BK-14
BK-00
184-BU-14
615-YL-14
308-YL
T
109-OR-4
101-RD-4
304-WH-8
615-YL-14
184-BU-14
200-BK
A770-PK
185-YL-14
CHASSIS
BK-00
GND
BYPASS 1 SOL
T
S
A768-BU
MM
200-BK
OR
BR
GY
GN
535-BU
D
200-BK
120-YL
L32
RR
L32
200-BK
129-BU
403-GN
D A
118-GY
535-BU
A
615-YL-14
200-BK-14 200-BK-14
615-YL-14
118-GY
L22
365-YL
A
323-WH-14
607-PK-14
322-GY
607-PK-14
200-BK-14
200-BK
322-GY
322-GY
200-BK
RR
B957-GN
200-BK
BK-00
168-GN-14
365-YL
200-BK
140-BU
200-BK-14
607-PK-14
RRRR
322-GY
633-BU-14
200-BK-14
616-BU-14
200-BK-14
607-PK-14
ATCH
REFUELING
PUMP
RELAY
3T-0376
200-BK-14
10A
B740-OR-14
322-GY
HORN
7T-0970
HORN
7T-0969
506-PU
A
185-YL-14
172-GN
G
CHASSIS
LAMP
5I-8250
5V+
RR
RR
185-YL-14
168-GN-14
GROUND
200-BK-14
GOV POSITION
ENGINE SPEED -
ENGINE SPEED +
ENGINE COOL TEMP
200-BK-14
L30
ENGINE OIL PR
ENGINE
SPEED
DIAL
7Y-5465
2
1
G
L25
A
L23
BK-00
307-OR
ALTERNATOR
3
410-WH
235-BK
185-YL-14
A763-GY-14
200-BK-14
TRAVEL ALARM
495-GN
HYD OIL TEMP
HYD OIL LEVEL SW
3
D777-PU
325-PK
2
TRAVEL
ALARM
3T-1444
1
FUEL LEVEL
306-GN
+12 VOLT
+
A754-GY
101-RD-14
RR
B751-YL-14
1
113-OR
B956-PK
B955-YL
201-BK
200-BK
129-BU
201-BK
OPERATOR STATION
403-GN
607-PK-14
HEAVY LIFT SW
101-RD-14
200-BK
BK-00
K
BACKUP
PS VALVE
SW
3T-4405
C
320-OR
ATCH
HEAVY
LIFT 3
SOL
102-0725
200-BK
ENG OIL LEVEL SW
326-PU
RELAY BOX
150-OR
D776-WH
GROUND
+ BATTERY
200-BK-14
1
2
3
FF
OR
BK
1
2
A761-PU
267-BK
A
BK
RD
B733-YL
3
PLATFORM
4
633-BU-14
ALL DASHED LINES ARE ATTACHMENTS.
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS OFF.
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS ON.
STARTING CIRCUIT.
GAUGE CIRCUIT.
WIPER/WASHER CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
ENGINE SHUTDOWN CONTROL CIRCUIT.
START AID CIRCUIT.
ENGINE/PUMP CONTROL CIRCUIT.
CONN 24
CONN 51
CONN 25
CONN 52
CONN 53
CONN 21
CONN 20
CONN 60
CONN 13
CONN 59
CONN 10
CONN 58
CONN 12
CONN 11
CONN 18
CONN 17
CONN 11
CONN 22
CONN 19
CONN 14
CONN 16
CONN 15
CONN 64
CONN 62
CONN 50
CONN 3
CONN 4
CONN 6
CONN 65
CONN 23
CONN 55
CONN 56
CONN 23
CONN 48
CONN 49
CONN 1
CONN 2
CONN 40
CONN 5
CONN 69
CONN 39
CONN 45
CONN 44
CONN 33
CONN 34
CONN 32
CONN 46
CONN 43
CONN 42
CONN 41
CONN 36
CONN 37
CONN 66
CONN 38
CONN 9
CONN 26
CONN 67
CONN 68
CONN 47
CONN 27
CONN 28
CONN 35
CONN 30
CONN 31
CONN 29
CONN 7
CONN 8
CONN 63
VALVE
BACKUP
MOTOR
