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
3AR1-UP
KENR2766
July 1995
CB-535B
Electrical System
Vibratory Compactor
©
1995 Caterpillar
All Rights Reserved
Printed in U.S.A.
13
8
4 11
6
7 14
1 3
5
12 10 9 2
10
8
19 20 21 18 16 21
15 17
4
11 12
6 7 10 9
13
14 2
5
13
d35743
1
Item
Component
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
No.
Rear Wheel Valve
Main Disconnect Switch
Propel Brake and Three (3) Speed Valve
Hydraulic Oil Temperature Switch
Batteries
Starter
Fuel Sender
Engine Oil Pressure Switch
Operator's Controls
Relays
Main Relay
Neutral Start Switch
Operator Lights Panel
Fuse Holders
Alternator Circuit Breaker
Fuel Solenoid
Alternator
Main Disconnect Switch
Vibration Control Solenoid
Engine Coolant Temperatrue Switch
Operator Gauge Panel
d34178
Electrical Schematic
126-3412
d35727
P20R20
P52
AMPLIFIER
R52
200-BK-10
200-BK-10
200-BK-10
R45
P11
109-OR-6
124-2569
P5
FAN
R44
P45
200-BK-10200-BK-10
200-BK-10
105 BR
1
3
2
4
OR
BR
GY
GN
449 BU
206 BK
176 YL
450 YL
6
5
4
3
2
1
GN
YL
BR
BK
BR
YL/BK
BR
112-PU-10
112-PU-10
GN
YL
BU/WH
PK
105-BR
200-BK
449-BU
206-BK
176-YL
450-YL
INTERIOR LIGHT
BU/WH
BK
FLASH-BEACON
CONNECTOR
RADIO
BK/OR
GY/BK
GY
OR
BK
FRONT WINDSHIELD
WASHER/WIPER SW.
FAN SW
OPTIONAL SWITCH FLASH-BEACON
DASHBOARD
R50
P49R49
P48R48
P47R47
P8
R51P51
BR
200BK-10
BK/OR
GN
YL
BU/WH
BK
BK
OR
GY
YL
GN
GY/BK
BK/OR
GY
BK
GY
BU/WH
BR/GN
BR/RD
BK/BR
PK
BU/WH
1
2
3
4
200200
1
7
3
2
BR/GN
5
6
8
1
2
3
4
BR/RD
BK/BR
GY/BK
YL
WH
+ -
+ - +-
GN
GY
BR
OR
4
2
3
1
REAR WIPER MOTOR
H
L
MOTOR
-T
BK
10
10
10
10
BR/GN
112-PU-10
BR/BK
GN
YL/BK
RD/BR
GN
BU
OROR
YL/BK
WH
R46 P46
2
1
P19
R19
REAR WINDSHIELD
WASHER/WIPER SW.
WASHER
WINDSHIELD
OR/BK
GY/BK
GY
P50
FRONT WIPER MOTOR
H
L
MOTOR
-T
BK
B
WP
L
H
B
B
WP
L
H
B
LIGHT OPTION-BEACON
206-BK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
105-BR
200-BK
449-WH
206-BK
176-YL
B440-WH
6
5
P7P6
4
447-PK
DIODE AS
105-3542
DIODE AS
105-3542
3
2
1
STARTING
AID RESISTOR
7W1251
C938-BR
55
5
5
5
4
4
4 4
4
33
3
3
3
2 2
2 2
2
111
1
1
3E52393E52393E52393E5239
175-PK
3E5239
3 SPEED
SWITCH
112-PU-6
200-BK
5
4
3
2
1
BRAKE RELAY #1
3E5239
5
4
3
2
1
BRAKE RELAY #2
3E5239
1
112-PU
608-GN
3
4
2
P32 R32
P33 R33
P34 R34
P35
R35
P37R37
P36R36
P40
P41
BK-00
CABLE AS
5Y-1423
STRAP AS
108-1032
106-0539
CABLE AS
RD-00
JUMP STUD
106-0800
R40
200-BK
1G-9759
B
A
P19
R19
21
221-BK
R21
C923-OR
B440-WH
608-GN
321-BR
449-WH
SHIELD
SHIELD
R41
P18R18
200-BK
447-PK200-BK
R17
P17
1
2
B439-WH
200-BK
FUEL
SHUT-OFF
SOLENOID
309-GY
200-BK
326-PU
T-
ENGINE COOLANT
TEMP SW
108-3190
221-BK
200-BK
SHIELD
R
+
ALT
R31P31
200-BK
C729-BU
C928-GY
1
2
3
5
C929-WH
4
ALTERNATOR
9W3043
P15
2
1
3
4
605-YL
611-PU
200-BK
4
3
OR
RD
5
1
RD
P28
R16
REAR WORKING LAMP GP
108-1621
REAR WORKING LAMP GP
108-1621
R14
P14
P16
C929-WH
C928-GY
200-BK
200-BK
200-BK
608-GN
200-BK-12
P9
CIRCUIT GROUPING
DESIGNATION
ATCH WIRE, CABLE,
COMPONENT
CONNECTOR
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
ELECTRICAL CONNECTION
TO VEHICLE STRUCTURE
CIRCUIT NOT CONNECTED
CIRCUIT CONNECTED
BLADE, SPADE, RING
OR SCREW TERMINAL
DESCRIPTIONSYMBOL
RED
WHITE
ORANGE
YELLOW
PINK
BLACK
GRAY
PURPLE
BROWN
GREEN
BLUE
COLOR
6
RD
WH
OR
YL
PK
BK
GY
PU
BR
GN
BU
GND
FRAME
C929-WH
C928-GY
C730-BR
C729-BU
200-BK
R15
8V2514
FRONT
VIB SENSOR
4P5820
REAR
HARNESS
P13R13
P12R12
P30
R30
5L-2854
3E-5239
21
C729-BU
C730-BR
751-GN
200-BK
9D3721
STARTING
AID
200-BK
87
30
87a
87
30
87a87a
376-GN
377-OR
30
8787
30
87a87a
30
87
SHIELD
155-PK
751-GN
9G0011
101-7740
309-GY
309-GY
308-YL
307-OR
109-OR
BR/RD
YL/BL
376-GN
377-OR
322-GY
326-PU
330-YL
308-YL
619-GN
121-YL
C924-YL
447-PK447-PK
C927-PU
C729-BU
308-YL
HEAD LAMP
HAZARD
TURN
GROUND
P3R3
R2 P2
R1
+BATTERY
P1
608-GN
SIG
+ -
C2
31
30B
49A
C
49
428-OR
400-GN
C938-BR
568-GN
C720-BU
2
3
87a
87a
87a
30
30
30
87
87a
30
87
C729-BU
FUEL
SOLENOID
RESISTOR
330-YL
87
87
326-PU
308-YL
326-PU
308-YL
F
E
D
C
B
A
F
E
D
C
B
A
101-RD-6
304-WH-6
200-BK
109-OR-6
MAIN
RELAY
112-PU-6
4
155-PK
155-PK
777-PU
B765-BR
419-YL
B765-BR
419-YL
200-BK
FUNCTIONAL
LIGHT
RELAY
HYD
TEMP
RELAY
WARNING
LIGHT
RELAY
COOLANT
TEMP
RELAY
ENG OIL
PRESS
RELAY
C729-BU
C730-BR
C928-GY
C929-WH
608-GN
322-GY
C929-WH
B438-OR
C922-BR
B438-OR
C935-PU
5
C922-BR
B439-WH
C729-BU
CABLE AS
9S4611
CABLE AS
9V6943
BK-00
BK-00
FLASHER
C929-WH
C730-BR
C928-GY
200-BK-12
C928-GY
1 2
C929-WH
608-GN
1
2
3
4
5
6
7
8
3T8728
109-OR-6
4D1836
REAR WHEEL
SWITCH
C926-BU
377-OR
C730-BR
1
2
3
4
5
6
7
8
9
10
1
3
2
3
1
2
3
4
5
2
1
3
12
4
1
5
3
BACKUP
ALARM
PRESS SW
3
1
2
AUTO-VIB
SWITCH
(REV)
IGNITION
SW
INDICATOR LAMP
2N2371/2V7087
STARTING AID
DRUM OFFSET
RECORDING MODULE
WATER SPRAY
BACKUP ALARM
FLASHER
VIBRATION
GUAGES
KEY START
105-BR
HOUR
METER
400-GN
C930-BR
200-BK
P10
GROUND
SPEED
TACH
537-GN
200-BK
TURN SW
322-GY
6
C925-GN
WARNING
HORN
R9
3T2357
P43
R42
419-YL
C928-GY
C929-WH
175-PK
221-BK
220-BK
608-GN
P41
FUEL
GAUGE
NEUTRAL START
RELAY #2
3E5239
321-BR
C926-BU
C928-GY
605-YL
226-BK
751-GN
220-BK
221-BK
C925-GN
C730-BR
377-OR
C929-WH
C729-BU
C927-PU
C924-YL
619-GN
326-PU
322-GY
C924-YL
200-BK
200-BK
608-GN
TO
FRAME
TO
ENGINE
BLOCK
C922-BR
447-PK
B440-WH
200-BK
400-GN
606-GY
309-GY
330-YL
777-PU
449-WH
608-GN
123-WH
614-PU
306-GN
155-PK
C923-OR
611-PU
176-YL
105-BR
B439-WH
C929-WH
C928-GY
200-BK
751-GN
C730-BR
C729-BU
608-GN
123-WH
226-BK
221-BK
400-GN
614-PU
619-GN
611-PU
605-YL
606-GY
BATTERY
BATTERY
3T5760
3T5760
FRONT SPEED
SENSOR
3E-8848
200-BK
449-WH
377-OR
449-WH
321-BR
B439-WH
155-PK
330-YL
322-GY
B440-WH
C923-OR
C922-BR
R.H. LIGHT GP
BACKUP ALARM
WARNING HORN
7T0969
L.H. LIGHT GP
C924-YL
C925-GN
777-PU
C926-BU
C927-PU
306-GN
309-GY
447-PK
220-BK
326-PU
751-GN
226-BK
605-YL
C928-GY
200-BK
DIODE
1V9633
C926-BU
321-BR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
110-GN
105-BR
200-BK
449-BU
206-BK
176-YL
450-YL
AUTO-VIB
SWITCH
(FWD)
LIGHT
BREAKER
1
2
3
4
5
6
103-YL
B440-WH
31
32
33
34
35
36
37
38
39
40
21
22
23
24
25
26
27
28
29
30
RECORDER
D
C B
A
1
2
3
4
5
6
7
8
9
10
4512
3
1
2
3
4
5
6
7
88
7
6
5
4
3
2
11
2
3
4
5
WORKING LAMP GP
108-1621
2
1
109-OR-6
200-BK
614-PU
619-GN
611-PU
605-YL
606-GY
200-BK-12
439-YL
C923-OR
C922-BR
110-GN
B438-OR
7T0969
568-GN
C938-BR
C930-BR
200-BK
306-GN
200-BK330-YL
307-OR
R4
173-YL
449-WH
103-YL
110-GN
121-YL
123-WH
155-PK
175-PK
176-YL
105-BR
406-PU
405-GY
635-BR
C932-YL
B438-OR
428-OR
C931-OR
400-GN
B440-GN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
B439-WH
105-BR
176-YL
611-PU
C923-OR
155-PK
306-GN
614-PU
123-WH
608-GN
326-PU
123-WH
608-GN
4W2141
R10
155-PK
C932-YL
614-PU
606-GY
611-PU
605-YL
619-GN
65
TO
ENGINE
BLOCK
31
32
33
34
35
36
37
38
39
40
200-BK
449-BU
110-GN
63-WH
6
1
2
3
4
5
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
406-PU
405-GY
635-BR
C932-YL
B438-OR
428-OR
C931-OR
400-GN
B440-WH
C930-BR
108-0326
173-YL
449-BU
103-YL
110-GN
121-YL
123-WH
155-PK
175-PK
176-YL
105-BR
123-WH
4
2
1
2
1
DRUM
OFFSET SW
614-PU
200-BK
606-GY
200-BK
606-GY
200-BK
322-GY
GND
FRAME
ROADING
LAMP
111-9714
ROADING
LAMP
111-9714
111-9711
111-9711
9G0011
1V6652
308-YL
173-YL
635-BR
608-GN
611-PU
619-GN
614-PU
606-GY
605-YL
LIGHT SW
124-2568
FRONT
LIGHT GP
FRONT
LIGHT GP
BRAKE
6P3236
C934-BU
200-BK
5E8006
3E5239
1
2
3
1V6653
7R3695
-
+
C923-OR
B438-OR
C922-BR
110-GN
10A
10A
10A
15A
10A
10A
10A
10A
10A
10A
6T7337
175-PK
176-YL
110-GN-14
121-YL
173-YL
103-YL
123-WH
FUNCTIONAL LIGHT
CLUSTER
117-5673
405-GY
428-OR
C931-OR
123-WH
406-PU
FRONT
WATER PUMP
108-0326
200-BK
611-PU
MOTOR
2
1
200-BK
C922-BR
605-YL
200-BK
450-YL
110-GN
63-WH
REGULATOR
814135
11
12
13
14
15
16
17
18
19
20
200-BK
109-7059
AMPLIFIER
105-BR
619-GN
200-BK
P44
447-PK
619-GN
64
377-OR
377-OR
5
3
614-PU
439-YL
C922-BR
200-BK
326-PU
112-PU-10
112-PU-10
112-PU-10
112-PU-10
112-PU-10
112-PU-10
606-GY
605-YL
611-PU
619-GN
614-PU
608-GN
308-YL
635-BR
173-YL
307-OR
NEUTRAL
START
RELAY #1
751-GN
B439-WH
C932-YL
R22
P22
WATER
SPRAY
TIMER
3E5239
FRONT
INT
RELAY
C936-GY
C937-WH
114-GN-12
376-GN
STARTING AID
SWITCH
12
11
10
155-PK
175-PK
307-OR
9
2
308-YL
148-WH
3
112-PU-6
B438-OR
C932-YL
635-BR
400-GN
406-PU
405-GY
C931-OR
428-OR
9G7641
C923-OR
109-OR
DIAGNOSTIC LIGHT
CLUSTER
117-5674
R5
WORKING LAMP GP
108-1621
DIODE
1V9633
405-GY
406-PU
C931-OR
428-OR
220-BK
123-WH
221-BK
C930-BR
226-BK
C938-BR
OR
GRN
BLU
BLK
RED
200-BK
87a
30
87
PART OF VALVE GP
321-BR
121-YL
322-GY
AUT/MAN. SW
4D1836
C932-YL
103-YL
330-YL
RR INT
RELAY
NEUT. START
2
R11
1
P23
777-PU
4
-
21
BRAKE
SWITCH
C935-PU
C936-GY
B440-WH
B439-WH
+
155-PK
VIB ON/OFF
P4
ST
ON
OFF
B
S
C
R
871246
VIB.
TACH
5E8352
109-OR
C930-BR
2
200-BK
BRAKE
155-PK
B440-GN
7
88
7
6
5
4
3
2
1
105-BR
307-OR
308-YL
309-GY
ALT
BREAKER
9S0174
STARTER
RELAY
3E0075
2
606-GY
109-OR-6
101-RD-6
200-BK306-GN
304-WH-6
WARNING
HORN SW
R43
B439-WH
C729-BU
RD
R28
5432
200-BK
226-BK
3
568-GN
406-PU
568-GN
405-GY
REAR
WATER PUMP
C923-OR
200-BK
200-BK
C923-OR
449-WH
REAR WHEEL
VALVE
449-WH
608-GN
SPEED
VALVE
C926-BU
751-GN
751-GN
200-BK
2
1
608-GN
321-BR
321-BR
3
20
R8
C928-GY
C929-WH
C932-YL
322-GY
B439-WH
321-BR
306-GN
C927-PU
777-PU
C924-YL
C925-GN
200-BK
200-BK
606-GY
614-PU
321-BR
200-BK
200-BK
605-YL
614-PU
C923-OR
2
4
3
5
2
C923-OR
6
5
4
3
2
1 B440-WH
1
605-YL
611-PU
619-GN
3
614-PU
400-GN
221-BK
226-BK
C922-BR
C923-OR
B440-WH
322-GY
109-OR-6
B439-WH
321-BR
449-WH
220-BK
309-GY
608-GN
200-BK
608-GN
614-PU
606-GY
200-BK
200-BK
614-PU
200-BK
605-YL
111-9713
3T1815
6
8
7
12
C927-PU
-+
SIG
-+
SIG
C925-GN
1
C926-BU
FUEL
SENDER
6T-3670
112-PU-10
C925-GN
C924-YL
C934-BU
322-GY
321-BR
121-YL
307-OR
306-GN
103-YL
C925-GN
C924-YL
376-GN
376-GN
7
8
123-WH
608-GN
C925-GN
VIB
CONTROL
VIB
CONTROL
C924-YL
2
1
R20
P20
200-BK
XX
C729-BU
DISCONNECT SW
7N0718
1
2
HYD.
TEMP SW
7N7851
STARTER
MOTOR
101-8929
-T
1
200-BK
C927-PU
DRUM
OFFSET
VALVE
HOUR METER
PRESS SW
103-4977
400-GN
449-WH
405-GY
406-PU
C931-OR
428-OR
220-BK
123-WH
221-BK
C930-BR
226-BK
C938-BR
777-PU
330-YL
309-GY
606-GY
BR/BK
BR/GN
400-GN
200-BK
B440-WH
447-PK
C922-BR
123-WH
NEGPOSNEGPOS
P21
5Y-1423
CABLE AS
200-BK
P42
P41
2
RD-00
CABLE AS
108-0405
MOTOR
BATMTR
S
306-GN
SHIELD
2
1
MOTOR
C927-PU
C926-BU
777-PU
777-PU
C924-YL
C925-GN
SHIELD
SHIELD
109-OR-6
ENGINE OIL
PRESS SW
3T4418
220-BK
BK-00
109-OR-6
CB
1
ABBREV
A
111-9712
A
B
C
A
B
C
200-BK
619-GN
611-PU
614-PU
200-BK
1
1
C924-YL
112-PU-6
1
2
R23
110-GN
3
1
2
4D1836
SWITCH
