©
1996 Caterpillar
All Rights Reserved
Printed in U.S.A.
KENR2763
January 1996
CP-323C And CS-323C
Vibratory Compactor
Electrical System
CP-323C
1EN1-UP
CS-323C:
6DM1-UP
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
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.
276-BK
BEACON SW OPTION
8D-2676
603-PK
2
3
115-PK
2
HYD OIL CHR
PR RLY 3E-5239
200-BK
276-BK 123-WH
87a
87 30
86
6
7
5
4
8
1
2
3
85
P10
568-GN
465-OR
DIODE AS. 3
105-3542
COLOR
RED
WHITE
ORANGE
YELLOW
PINK
BLACK
GRAY
PURPLE
BROWN
GREEN
BLUE
ABBREV
RD
WH
OR
YL
PK
BK
GY
PU
BR
GN
BU
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
ROPS LIGHTS
HARNESS 13
1-12
17
C938-
BR
21
1
2
20
0-BK
B92
0GN
200-BK
450
-
YL
308-YL
200-BK
450-YL
105-BR
308-YL
60
3-PK
20
0-BK
60
3-PK
20
0-BK
1
2
BEACON HAR
NESS
OPTIONAL
ROTARY
BEACON
BAC
BK
RD
BU
20
0-BK
2
1
RD
BK
123-WH
400-GN
220-BK
1
2
COMPONENT ARE SHOWN INSTALLED
ON A FULLY OPERABLE MACHINE
WITH THE KEY AND ENGINE OFF.
78
8-YL
COOL. TEMP
SW 108-1224
C
A
B
221-BK
200-BK
BK
RD
WH
BK-00BK-00
RD-00
20
0-BK
BK
RD
WH
B765-BR
112-PU-10
112-PU-10
308-YL308-YL
109-OR-6
109-OR-6
304-WH-6
101-RD-6
109-OR-6 109-OR-6
11
2-PU-10
10
1-RD-10
11
2-PU-10
10
1-RD-10
101-RD-6
WARN HORN
7T-0969
306-GN
200-BK
308-YL
200-BK
112-PU-10
304-WH-6
10
9-OR-6
10
9-OR-8
10
15
17
5
16
6
12
19
2
20
22
1
24
18
23
7
11
14
13
9
8
4
3
P5
87a
87 30
868585 86
3087
87a
P8
N/ST #1 RLY
3E-5239
87a
87
143-BR
751-GN
30
86
10A
85
1
2
P4P3P1
87a
87 30
8685
N/ST #2 RLY
3E-5239
87a
87 30
8685
--
85 86
++
REAR
FLOODS
9X-1439
20
0-BK
60
8-GN
GND
DIODE AS. 1
105-3542
200-BK
322-GY
MAIN RLY
101-7740
P15
R15
ST
MOTOR
200-BK
148-WH
12
377-OR
326-PU
377-OR
ST
777-PU
121-YL
321-BR
MOT BAT.
DISCONNECT SW
7N-0718
BATTERY
3T-5760
ST AID
(ENGINE)
101-RD-6
377-OR
BATTERY
3T-5760
60
8-GN
20
0-BK
304-WH-6
101-RD-6
109-OR-6
60
8-GN
20
0-BK
121-YL
321-BR
BKUP
ALM
3T-1815
304-WH-6
20
0-BK
60
7-PK
4
3
2
1
20
0-BK
60
7-PK
60
7-PK
20
0-BK
20
0-BK
60
7-PK
FRONT
FLOODS
9X-1439
27
6-BK
BK-00
20
0-BK
B92
0-GN
3087
87a
ST RLY
3E-0075
87a
87 30
8685
P9
85 86
30
1
2
200-BK
226-BK
R18
C
A
B
FRAME
GND
377-OR N/A
148-WH N/A
B920-GN
B921-WH
751-GN
121-YL
321-BR
608-GN
607-PK
603-PK
PLATF GND
1
2
FEDCBA
+
+
+
+
LOW CHRG
PRESS. SW
221-BK
P17
568-GN
C938-BR
C938-BR
307-OR
20
0-BK
14
3-BR
B76
5-BR
77
6-YL
32
2-GY
12
3-WH
HYD OIL
TEMP
HYD
FLTR
OPTIONAL
VIB TACH
78-0594
SIG
-
IGN
GND
+
DIODE
7X-8831
ALT IND LAMP
7N-5876 LAMP
R13
P13
SERVICE METER
(HR GA)
6T-7337
FUEL SOL RES
5L-2854
ST AID RES
7W-1251
ST AID SW
9D-3721
10A
FUEL LVL GA
4W-2141
GND
IGN
SEND
R33
P33
376-GN
376-GN
308-YL
KEY ST SW
9G-7641
B
S
C
R
447-PK
1
326-PU
308-YL
309-GY
87
87a
308-YL
308-YL
308-YL
PROPEL
INTLK
SOL
77
7-PU
20
0-BK
1
2
ST
P16
ENG
BLOCK
123-WH
400-GN
309-GY
109-OR-6
220-BK
200-BK
HYD OIL
TEMP SW
110-0514
ENG OIL
PR SW
107-0611
ENG OIL
PR SW
103-4977
OPTIONAL ENG
SP SENSOR
6V
-245
5
12
B-
R
B+
R16
D+
447-PK200-BK
FUEL LEVEL
SENDER 118-8316
307-OR
105-BR
1
2
77
7-PU
20
0-BK
200-BK
400
-
GN
568-GN
428-OR
400-GN
C938-BR
568-GN
405-GY
568-GN
406-PU
406
-
PU
465
-
OR
123
-
W
H
C931-
OR
428
-
OR
405
-
GY
N/A CKT OR PARTIAL CKT IS NOT
APPLICABLE TO THIS MODEL
FUEL PUMP
SOL (ENGINE)
200-BK
326-PU
ALT
118-8314
ON
OFF
103-PK
103-PK
322-GY
B919-GN
103-YL
1
2
128-PK
1
2
321-BR
200-BK
C938-BR
307-OR
607-PK
105-BR
148-WH
406-PU
123-WH
428-OR
405-GY
568-GN
C931-OR
200-BK
200
-
BK
B92
0-GN
B92
1-WH
75
1-GN
12
1-YL
60
8-GN
60
7-PK
32
1-BR
60
3-PK
R11
P11
R12
P12
607
-
PK
60
7-PK
10
5-BR
14
8-WH
776-YL
143-BR
143-BR
776-YL
200-BK
X
X
4
2
116-BR
607-PK
607-PK
4
6
3
1
5
2
115-PK
60
8-GN
20
0-BK
MAIN HARNESS 124-7490
PLATFORM HARNESS 117-0842
101-RD-10
CONTROL HARNESS 117-0841
123-WH
200-BK200-BK
101-RD-6
85 86
30
87
87a
128-PK
105-BR
143-BR
116-BR
P6P7
15
12
14
13
1
16
17
18
19
20
21
123-WH
200-BK
405-GY
307-OR
143-BR
306-GN
B765-BR
776-YL
C938-BR
C931-OR
428-OR
406-PU
221-BK
226-BK
330-YL
220-BK
777-PU
200-BK330-YL
143-BR 307-OR
330-YL
C931-OR200-BK
200-BK C930-BR
200-BK
200-BK
405-GY
200-BK
220-BK
200-BK
406-PU
776-YL
776-YL B765-BR
777-PU
776-YL
200-BK
123-WH 221-BK
C720-BU
C930-
BR
200-BK
123-WH 226-BK
428-OR
123-WH
C938-BR
200-BK123-WH
306-GN
C938-BR
607-PK
200-BK
308-YL
123-WH
465-OR
405-GY
377-OR
326-PU
400-GN
221-BK
226-BK
330-YL
308-YL
103-YL
148-WH
121-YL
115-PK
123-WH
FWD HORN
KEY ST
BRAKE
REAR FLOOD
VIB ON/OFF
ST AID
220-BK
777-PU
123-WH
276-BK
BKUP ALM
FR FLOOD
GAGE/RLY
10A
10A
10A
10A
221-BK
226-BK
330-YL
308-YL
15
19
21
22
23
5
6
7
8
10A
10A
B921-WH
B920-GN
B91
9-GN
2
3
1
B920-GN
121-YL
321-BR
608-GN
607-PK
603-PK
18
17
20
2
13
12
10
24
ENG OIL
PR
COOL.
TEMP
16
3
11
14
1
4
9
447-PK
309-GY
788-YL
326-PU
377-OR
400-GN
450-YL
447-PK
309-GY
788-YL
326-PU
377-OR
400-GN
450-YL
465-OR
BRAKE
SOL
220-BK
777-PU
123-WH
4
2
3
10
6
8
5
7
11
9
60
7-PK
10
5-BR
14
8-WH
B92
0-GN
B92
1-WH
75
1-GN
12
1-YL
60
8-GN
60
7-PK
32
1-BR
60
3-PK
465-OR
406-PU
123-WH
428-OR
405-GY
568-GN
C931-OR
200-BK
BK SW
116-5275
& 122-7344
ALT CKT BKR
9S-0174
FWD HORN SW
3T-2357
BKUP ALM SW
(PROPEL LEVER)
VIB ON/OFF SW
(PROPEL LEVER)
FLOOD
LIGHT SW
7T-3946
607-PK
105-BR
148-WH
22
23
24
VIB CONT
SOL
INSTRUMENT HARNESS 117-0839
465-OR
33
0-YL
30
8-YL
NEUTRAL/
ST SW
7R-3397
BK #1 RLY
3E-5239
BK #2 RLY
3E-5239
123-WH
304-WH-6
20
0-BK
14
3-BR
B76
5-BR
77
6-YL
32
2-GY
12
3-WH
6
7
5
4
8
1
2
3
450
-
YL
450-YL
788-YL N/A
447-PK
377-OR
326-PU
400-GN
309-GY
6
7
5
4
8
1
2
3
VIB ON/OFF
SWITCH
8D-2676
FWD HORN
7T-0969
DIODE AS. 2
105-3542
DIAGNOSTIC LIGHT
CLUSTER AS.
86-8835
FUNCTIONAL
LIGHT RLY
3E-5239
HYD TEMP
RLY 3E-5239
450-YL
788-YL
447-PK
377-OR
326-PU
400-GN
309-GY
3
WARN LIGHT
RLY 3E-5239
1
10A
608-GN
COOL. TEMP
RLY 5E-5239
450-YL
ENG OIL PR
RLY 3E-5239
450-YL
P2
Electrical Schematic
128-2332
1 2
3
4
5
6
7 8
9 10 11
12
13
14
15 16
17
18
19
20
P6
P7P8
P9
P10
P5
P4
P3P2
P1
RELAY BANK
LAYOUT
RELAY#
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
DESCRIPTION
ENG. OIL PRESS.
COOLANT TEMP.
WARN LIGHT CLUSTER
HYD. TEMP
FUNCTIONAL LIGHT
BRAKE REL.#1
BRAKE REL.#2
NEUTRAL START #2
HYDRAULIC OIL CHARGE
NEUTRAL START #1
d47613
Item
No.
Component
1 Propel Brake Intlk. Solenoids
2 Vibration Control Solenoids (Part Of Propel Pump)
3 Propel Low Charge Pressure Switch
4 Operator's Gauge Panel
5 Propel Brake Solenoids
6 Neutral Start Switch
7 Starter And Solenoid
8 Diode Assemblies (Under Panel)
9 Batteries
10 Main Disconnect Switch
11 Alternator Circuit Breaker
12 Fuel Solenoid
13 Hydraulic Oil Pressure Switch
14 Relay Bank (10 Relays)
15 Engine Coolant Temperature Switch
16 Engine Oil Pressure Switches
17 Start Relay
18 Main Relay
19 Fuse Block
20 Operator's Controls
Note: Item 6 is located on the Propel Pump.
d47618
1
2
3
4
5
6
7
8
9
10 11
12 13 1415
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
