Page 540 of 659
ELECTRICAL-BODY
AND
CHASSIS
12-28
13000 MODELS
(EXC.
13700-800)
VIEW
A
12
11
13700-800 MODELS
Fig.
43 -
Instrumeni- Cluster Assembly
1.
R.H.
Directional Indicator
2.
Instrument Cluster Lamp
3. "Bright" Indicator
4.
"Gen"
indicator
5.
"Temp" Indicator 9.
6.
"Oil"
Indicator
10.
7.
L.H.
Directional Indicator
11.
8. Fuel Gauge Connector
12.
"Bart" Gauge Connector
Parking Brake Alarm Indicator
"Temp"
Gauge Connector
Oil Pressure Gauge Fitting
13.
Clock Assembly
14.
Clock Connector
15.
Cover (13100-400)
16.
Plate (13100-400)
CHEVROLET CHASSIS SERVICE MANUAL
Page 542 of 659
VIEW
A
VIEW
B
(13700-800)
Fig. 44
-
Instrument Panel Wiring Harness
1.
R.H. Door Jamb Switch
2.
To Instrument Panel
Compartment Light
3. Heater Control Lamp
4.
Ignition Switch Connector
5. Cigarette Lighter
Connector
6. W/S Wiper Switch
Connector
7. Light Switch Connector
8.
L.H.
Door Jamb Switch
9.
To
Body Harness Connector
10.
Parking Brake Alarm
Switch Connector
11.
Directional Signal Switch
Connector
12.
Backing Lamp Switch
Connector
13.
Stop-Lamp Switch
Connector
14.
Flasher Unit
15.
Heater Control Switch
Connector
16.
Heater Resistor Connector
17.
Console Courtesy Lamp
Connector
18.
Neutral Safety Switch
Connector
Page 544 of 659

ELECTRICAL-BODY AND CHASSIS 12-32
Fig.
47-
Instrument Clyster Wiring
1.
Instrument Cluster Bulb
2.
R.H. Directional Indicator
3. Bright Indicator
4.
Gen Indicator
5. Temp Indicator
6. Oil Indicator
7. L.H. Directional Indicator
8. Fuel Gauge Connector
9. Instrument Panel Wiring
Harness
10.
Clock Assembly (11700-800)
11.
Cover (exc. 11700-800)
12.
Plate (exc. 11700-800)
13.
Brake Alarm
indicator
wise wiring and lamp connections may be
damaged."~ ' ""
6. To install, position cluster to console opening and
connect all wiring and lamp connections.
7. Position cluster in console and attach speedometer
cable to the speedometer head.
8. Install eight screws retaining cluster to console.
9. Install mast jack upper clamp assembly.
10.
Connect battery ground cable and check operation of
instruments and gauges.
FUEL GAUGE REPLACEMENT
1.
Disconnect battery ground cable.
2.
Disconnect cluster lamp and wiring harness connec-
5.
tions at rear of gauge.
Remove two screws retaining gauge to rear of
cluster housing and remove gauge from housing.
Remove terminal nuts attaching gauge unit to cover
plate and remove unit, from plate.
To install, reverse the removal procedure*
CLOCK REPLACEMENT
1.
Disconnect battery ground cable.
2.
Remove clock set shaft, knob retaining screw and
knob from set shaft.
3.
Disconnect wiring and lamp connections "from rear
o£ clock.
4.
Remove two screws attaching clock to rear of hous-
ing and remove clock from cluster housing.
CHevnou-r ousst
Page 547 of 659

ELECTRICAL-BODY AND CHASSIS 12-35
SERVICE OPERATIONS
INSTRUMENT CLUSTER
REMOVAL AND INSTALLATION (Fig. 49)
1.
Remove mast jacket assembly. Refer to Section 9
for removal procedures.
2.
Disconnect tachometer drive cable at distributor.
3.
Disconnect the headlamp panel control switch from
instrument cluster.
4.
Remove lighting switch as outlined in this section.
10 10-A 1112 13
14
15 16 17 18 19
Fig.
49- Instrument Cluster Connections
1.
Cluster Illuminating
Bulbs
2.
Direction Signal Indicator
Bulb L.H.
3. Direction Signal Indicator
BulbR.H.
4.
Headlamp Actuating Motor
Indicator
5. Headlamp Hi Beam
Indicator
6. Parking Brake Alarm
Indicator
7. Ground Lead Attaching
Point
8. Temperature Indicator
"1"
Terminal
9.
10.
10A.
11.
12.
13.
14.
]5.
16.
17.
18.
19.
20.
21.
Temperature Indicator "S"
Terminal
Ignition Switch Receptacle
ignition Switch Illuminating
Bulb
Oil Pressure Indicator
Tachometer
Lighter Receptacle
Trip Odometer
Wiper Switch Receptacle
Speedometer
Ammeter "Gen" Terminal
Ammeter "Battery" Terminal
Lighting Switch Receptacle
Fuel Gauge
"1"
Terminal
Fuel Gauge "S" Terminal
5. Remove the ignition switch. Refer to Section 6Y
for removal procedure. Then disconnect ignition
switch lamp support at instrument panel.
6. Disconnect oil pressure line at oil pressure gauge
then remove the lead wires from ammeter, wiper
switch and cigarette lighter. Disconnect trip odom-
eter at mast jacket support.
7. Remove the instrument cluster-to-dash retaining
screws and pull cluster assembly slightly forward
to obtain clearance for removal of speedometer
cable, tachometer cable, cluster ground wire, fuel
gauge lead wires and remaining indicator and cluster
illuminating lamps.
8. To install cluster in dash panel, reverse removal
procedure.
FUEL GAUGE
The gasoline fuel gauge circuit consists of an electri-
cal indicator in the instrument cluster and a float-
controlled rheostat in the fuel tank.
Since the fuel gauge consists of two remotely located
units and connecting wires, it is sometimes difficult to
determine which unit is at fault when the gauge fails to
operate properly. Cluster removal is necessary to re-
place the fuel gauge.
NOTE:
Be sure to check gas gauge fuse in fuse
panel before attempting to trouble shoot for
inoperative gauge or tank sending unit.
SPEEDOMETER AND/OR TACHOMETER
Removal and Installation
Cluster must be removed from vehicle to service
speedometer head assembly (see Cluster Removal pro-
cedure)
.
With cluster removed from vehicle:
1.
Remove five screws securing cluster back panel to
cluster assembly; separate the parts carefully.
CAUTION: Care must be used to avoid marring
instrument cluster face.
2.
Remove two screws securing speedometer or ta-
chometer head to cluster back panel; carefully re-
move speedometer or tachometer head.
NOTE:
Servicing of speedometer or tachom-
eter head should be performed by an authorized
AC service station.
3.
Reverse above procedure to install speedometer.
Cable Replacement or Lubrication
1.
Disconnect the. cable from the speedometer or ta-
chometer head. Remove the old cable by pulling it
out from speedometer end of conduit.
NOTE:
If old cable is broken it may be nec-
essary to remove lower piece from transmission
or distributor end of conduit as applicable.
2.
Lubricate the lower 3/4 of cable with
AC
speedom-
eter cable lubricant and push the cable into the con-
duit. Connect the upper end to the speedometer or
tachometer head and road test vehicle for proper
operation.
TEMPERATURE GAUGE
The temperature indicator requires very little service
other than testing for malfunctioning and replacing de-
fective units. Cluster must be removed to service tem-
perature gauge.
Do not attempt to repair either the engine unit or the
gauge. When installing new engine unit, do not use
thread compound on unit threads, as this will increase
electrical resistance of unit and cause faulty reading
on gauge.
AMMETER OR OIL PRESSURE GAUGE
The ammeter or oil pressure gauge requires very
little attention other than keeping ammeter terminals
clean and tight. If the oil pressure control line should
become restricted it should be blown out or replaced.
Cluster must be removed to service these gauges.
HftVKI MANUAL
Page 575 of 659

ELECTRICAL-BODY AND CHASSIS 12-63
R.H. COURTESY
LP,
(67 MODELS &
16600 ONLY)
•18Y
R. H. DOOR JAMB
SW
(ALL EXCEPT 15300-400)
BK.
NEU.
LP.SW.SAF.SW.
(RJ»JD^
20 OR
20 OR
COMPT
(U*INST. PANEL COMP. LAMP
R-i3r
(ALL EXCEPT 15300-400)
14BRN
18
LBL
18 OR
14 OR
HEATER
CONTROL
LP.
RADIO CONN.
CIG.
LGT
20
P —
4
PPL
20
LG'
14 PPL—
NSOLE
CONN.
(16700-800
ONLY)
CONSOLE
CONN.
(16700-800
ONLY)
12
PPL
14 OR
12 PPL/W
20
GY/B
20 OR
14 OR
20 OR
14 OR
20 OR
20DBL
20 OR
20
GY
INSTRUMENT
CLUSTER
-ILLUM
-ILLUM
-R.H.
S
-GEN
-OILP
-ILLUM
-ILLUM
20 GY
20 GY
20DBI
20DBL/W
18
W
16BRN
-CLOCK-—:(i??T0°)
-ILLUM
^™LY
18
B
18
DBL
18
LBL
-HIGH BEAM—(11
-ILLUM
-
FUEL-GAGE —{30
-ILLUM
-ILLUM-^
-PARK BRAKE
ALARM & BRAKE
WARN. LIGHT
-ENG TEMP.—(35),
(39
-L.H.
SIG.
LAMP—(14
-ILLUM
-
TRAFFIC
HAZARD
SW.
20
LBL
20
P
16BRN
20
LG
20
PPL
14
LBL
20
T
20 OR
20 DG
20 OR
20
t
20 DG
20
Y
20
LG
20
BRN
12
PPL
PARK BRAKE
SW.
20 DBL/W
20 DG
12R
20 DG
10 OR
12
GY
20 OR
18
W
18
W
14
LBL
14T/W
14
B
SW.
67
MOD ONLY
L.H. COURT
LP.
(67 MODELS
&
16600 ONLY)
18 W-'
T/G WINDOW
SW.
(45 MOD ONLY)
DOOR JAMB
SW.
(ALL EXCEPT 15300-400)
Fig.
106 - Instrument Panel Cluster ~ Chevrolet
CHEVROLET CHASSIS SERVICE MANUAL
Page 580 of 659
ELECTRICAL-BODY AND CHASSIS 12-68
-7«3« R.H. DR. JAMB.SW.
C_18W-^{|>R.H. COURT
es RADIO CONN.
c5£ siHp INST. PANEL
COMPT. LAMP
ALL EXCEPT
(13100-400)
HEATER
CONTROL
HTR. CONTROL
LAMP
IGNITION SW.
LGT.
R. TURN IND.
INST.'CL. LP.
HEATER
RESISTOR
18 OR
20 Y
12 PPL/W
12 R
12 P
20 DG
14BRN
12 BRN
24 BRN/W
14
OR
20 GY
12 PPL/W
12 R
12 P
24 BRN/W
14
OR
BRK. ALARM
IND.
HI BEAM
IND.
LP.
GEN. IND. LP.
TEMP. IND. LP
INST* CL. LP.
OIL PRESS
IND.
LP.
HORN BUTTON
TO TRAFFIC
HAZARD SW.
20DBL
INST. CL. LP.
INST. CL. LP.
18 LBL
18 B
18DBL
r—20
BRN
20 OR
20
OR
20 PPL
4 LBL
20 DG
12 R
18 OR
BODY HARNESS
18 W—O-18W
^-20 BRN
20 LG
20 Y
20 DG
L.H. DR. JAMB SW.
20 LG
20 Y
20 DG
Fig.
Ill - Instrument Panel and Cluster — CheveNe
CHEVROLET CHASSIS SERVICE MANUAL
Page 584 of 659
ELECTRICAL-BODY
AND
CHASSIS
12-72
•
18LBL-
14OR-
•18Y —
20LG-
•20OR-
-20GY-
14PPL
>20P—
'14BRN
•20Y<
—-48DBL—
——12PPL
—
——16BRN
—
•—•12BRN
—
—24BRN/W-
•20GY-
•14OR
PRK
BRK
'
ALARM SW
—20DBL-
—— 18LBL-
_
12P—
—12R
—
—.20P—
18DBL-
18LBL-
—20DG
—20T
—20T
—20PPL'
—14LBL«
—20LG«
—12R-
—20DG-
•20Y«
18LBL-
140R—
18Y —
•20OR
I
GLOVE
COMPTLP&
SW
(ALL EXC
11100-300-
nn
400)
20GY—€3|p
HTRLP
20GY
CLOCK LP
CLOCK CONN
(11700-800 ONLY)
CSTRLP
20W
20DG-
20BRN<
•20Y
20DG
20OR*
2C
•20BRN'
20LG
•20W
Fig.
115
-
Instrument Panel
and
Cluster
—
Chevy
II
CHEVROLET CHASSIS SERVICE MANUAL
Page 588 of 659
ELECTRICAL-BODY AND CHASSIS 12-76
20 OR
•431 INST. COMPT. LAMP&SW.
14 B
«3@H}U
EMM RADIO CONN.
HEATER SW.
-12 PPL
CLOCK
CLOCK LAMPS
HEATER CONT. LP.
20 GY
14LBL
14 BRN
14 Y
14 o:
14
OR
20 OR
20 B
12 R BAT.
12 P
12 P IGN.
12 PPL SOL.
12BRNAC
20 GY
GY
20 GY
14 OR
12 BRN
12 R
12 R
14 BRN-*
12 BRN—
20 DG
TRAFFIC HAZARD SW.
666SSSB
20DBL
20LBL
20 T
HORN
CONTACT
16B/W
20 LG
18 P
12 R
18 GY/DBL/B
20 B
14
OR
14 LBL
16 B
20
W
12 R
^
18
LBL
14 LBL
20 PP
18 OR
20 BRN
16
DG
IGNTTION SWITCH
GROUND
IGNITION LAMP
INST. LAMP
RADIO CAPACITOR CONN.
TEMP. GAGE
INST. LAMP
INST. LAMP
H. DIR. SIG. LAMP
INST. LAMP
CIGARETTE
SI
"MW LIGHTER & LAMP
INST. LAMP
CLUSTER GROUND
LAMP TELL-TALX LAMP
HI-BEAM LAMP
INST. LAMP
PARK ALARM LAMP
INST. LAMP
W/S WIPER
SWITCH
AMMETER
H. DIR. SIG. LAMP
INST. LAMP
FUEL GAGE
LIGHT SWITCH
-20 P
Fig.
119 - Instrument Panel & Cluster ~ Corvette
CHEVROLET CHASSIS SERVICE MANUAL