ignition CHEVROLET CAMARO 1967 1.G Chassis Repair Manual

Fig.
48 - Instrument Panel Wiring Hamess

1.
To Instrument Panel

Compartment light

2.
Heater Control Bulb

3. To Heater Switch

4.
To Directional Signal Flasher
5.

6.

7.

a
To Heater Resistor

To Blower Motor

Connector

To Cigarette Lighter

To Ignition Switch
9.

10.

11.

12.
To Wiper Switch

To Light Switch

To Fisher Body Connector

To Directional Signal

Connector
13.
To Stop Lamp Switch

14.
To Backing Lamp

15.
Fuse Panel

16.
To Dimmer Switch

ELECTRICAL-BODY AND CHASSIS 12-34

5. To replace, reverse the removal procedure.

SPEEDOMETER REPLACEMENT

1.
Remove instrument cluster as previously described

in this section.

2.
Remove clock set shaft knob.

3.
Remove eight screws securing cluster housing to

bezel trim panel. Separate parts carefully observing

stack up of parts.

4.
Remove two screws securing speedometer head to

rear of cluster housing.

NOTE:
Servicing of the speedometer head

should be performed by an authorized AC Speed-

ometer Service Station.

5. To install, reverse the removal procedure..

SPEEDOMETER CABLE

Replacement or Lubricatibn

1.
Disconnect the speedometer cable from the speed-

ometer head. Remove the old cable by pulling it out

from speedometer end of conduit.

NOTE:
If old cable is broken it may be neces-

sary to remove lower piece from transmission

end of conduit.

2.
Lubricate the lower 3/4 of cable with speedometer

cable lubricant and push the cable into the conduit.

Connect the upper end to the speedometer head and

road test vehicle for proper speedometer operation.

INDICATOR LIGHT REPLACEMENT

To replace any indicator or cluster bulb, unsnap the

proper socket from rear of instrument cluster, remove

and replace bulb, and reinsert unit into rear of cluster

housing.

OIL PRESSURE INDICATOR

If the light does not come on when the ignition switch
is turned on, or if the light comes on and remains on

after the engine is started, one or more of the following

conditions is indicated:

• Low oil pressure

• High engine temperature

• Defective wiring or switch

Switch Replacement

1.
Disconnect wiring harness connector from sender

unit terminal (located in block above starter on

L-6 engines and at left front of distributor on V-8

engines).

2.
Remove sender unit, replace with new unit, and

; check operation.

GENERATOR INDICATOR

1.
Ignition on, engine not running and telltale light off.

a. Indicator bulb burned out, replace bulb.

b.
Open circuit or loose connection in the telltale

light circuit.

2.
Telltale light stays on after engine is started.

a. If indicator light does not go out at engine idle

speed, refer to Charging Systems under Engine

Electrical, Section 6Y.

TEMPERATURE (COOLING SYSTEM) INDICATOR

The temperature indicator circuit consists of two re-

motely located units, indicator gauge and engine sender

unit. The indicator gauge on all models uses a single

red light to indicate an overheated engine condition.

Engine Sender Unit Replacement

1.
Drain engine cooling system to a level below unit.

2.
Remove sender unit (located in the inlet manifold

near water pump housing on V-8 engines and in the

cylinder head near an exhaust port on L-6 engines)

and replace with new unit.

3.
Refill cooling system and check operation of unit.

CORVETTE INSTRUMENTS AND GAUGES

INDEX

Page

General Description ., 12-34

Service Operations . 12-35

Instrument Cluster ., 12-35

Fuel Gauge 12-35
Speedometer/Tachometer Service. 12-35

Temperature Gauge 12-35

Ammeter/Oil Pressure Gauges 12-35

GENERAL DESCRIPTION

All Corvette instruments and gauges are conveniently

located in the dash-mounted cluster. The entire cluster

is removable to permit servicing of the various instru-

ments and gauges. The indicator and cluster illuminating

bulbs may be replaced without removing the cluster from

the panel.
Regular maintenance is not required on the instrument

cluster or its components other than maintaining clean

and keeping the speedometer and tachometer cables

properly lubricated.

CHEVROLET CHASSIS SERVICE MANUAL

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

ELECTRICAL-BODY AND CHASSIS 12-37

Fig.
50 - Instrument Cluster Installation — Camaro

FUEL GAUGE REPLACEMENT

1.
Remove instrument cluster assembly as previously

described.

2.
Remove cluster lamps from gauge cover plate,

ground screw and terminal nuts attaching printed

circuit to fuel gauge.

3.
Remove three screws retaining gauge assembly to

cluster housing.

4.
Carefully move printed circuit away from gauge and

remove gauge assembly from cluster housing.

5. Remove terminal nuts securing gauge to cover plate,

and detach gauge unit.

6. To install, reverse removal procedure.

TACHOMETER

NOTE:
The tachometer is a self-contained, all

transistor unit requiring very little service

other than keeping the terminal nuts clean and

tight. The unit is not serviceable and must be

replaced, if defective.

1.
Remove instrument cluster as previously described

in this section.

2.
Remove cluster lamps from rear of gauge cover and

disconnect harness wiring connections from gauge

terminals.

3.
Remove three screws retaining gauge to cluster

housing.

4.
Move printed circuit away from gauge area and re-

move gauge unit from housing.

5. Remove terminal nuts securing gauge to cover

detach unit.

6. To install, reverse removal procedure.

SEAT SEPARATOR INSTRUMENT CONSOLE

(Fig.
54)
(Fuel,
Ammeter, Temperature, Oil Pressure Gauges,

Low Fuel Warning Unit, and Clock)

1.
Disconnect battery ground cable.

2.
Remove clock shaft knob from face of cluster.

3.
Remove cover retaining screws (4) and cover from

cluster assembly.

NOTE:
Use an alien wrench to remove the two

screws located in the top of the cover below the

instrument console.

4.
Remove four screws retaining gauge mounting plate

to cluster housing.

5. Carefully disengage gauge plate from housing and

disconnect oil pipe and all electrical connections at

rear of gauges.

NOTE:
At this point, with gauge package re-

moval from housing all gauges including the low

fuel warning system may easily be serviced.

6. To install assembly, use reverse of removal

procedure.

OIL PRESSURE INDICATOR

If the light does not come on when the ignition switch

is turned on, or if the light comes on and remains on

after the engine is started, one or more of the following

conditions is indicated.

• Low oil pressure

• Defective wiring or switch

Sending Unit Replacement

1.
Disconnect wiring harness connector from sender

unit terminal (located in block above starter on L-6

engines and at left front of distributor on V-8

engines).

Fig.
51 - Speed Warning Device

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-38

Fig.
52 - Instrument Cluster Lighting

1
• Cluster Lamp

2.
* High Beam Indicator

3. Oil Pressure Indicator

4.
L.H. Directional Indicator

5. Generator indicator
6. R.H. Directional indicator

7. Temperature Indicator

8. Printed Circuit

9. Chassis Harness Connector

10,
Brake Warning Indicator

2.
Remove sender unit.

3.
Replace with new unit and check operation.

GENERATOR INDICATOR

1.
Ignition on, engine not running and indicator light off:

•Indicator bulb is burned out, replace bulb.

•Open circuit or loose connection in the indicator

light circuit.
2.
Indicator light stays on after engine is started:

•Ti indicator light does not go out at engine idle

speed, refer to Charging System Tests in Section

6Y, Engine Electrical.

TEMPERATURE (COOLING SYSTEM) INDICATOR

The temperature indicator circuit consists of two re-

motely located units, indicator lamp and sending unit.

The "indicator lamp, located in the instrument cluster

CHfVROtEr CHASM SfXVICf

17-

VIEW A

Fig.
53 - Instrument Panel Wiring Harness

1.
To Glove Box Light

2.
To Heater Control

3. Heater Control Lamp

4. To Cigarette Lighter
5. To Ignition Switch

6. To Instrument Cluster

7. To Wiper Switch

8. To Light Switch

9.
To Directional Signal Switch
10.
To Stop Lamp Switch

11.
To Backing Lamp Switch

12.
Fuse Panel

13.
To Dimmer Switch
14.
To Fisher Body Connector

15.
To Directional Signal Flasher

16.
To Heater Resistor

17.
Directional Signal Flasher

ELECTRICAL-BODY
AND
CHASSIS
12-56

DEPRESSED PARK 2-SPEED WIPER
AND
WASHER

CORVETTE

GENERAL DESCRIPTION

The 2-speed windshield wiper
(fig. 91)
consists
of a

compound wound
12
volt dc motor and
a
gear box section

containing
the
gear mechanism
and
relay control.
The

motor armature
is
fitted with
a
worm gear which drives

the main gear assembly and crank arm.

The relay control, consisting
of a
relay coil, relay
armature
and
switch assembly,
is
located in the gear
box"

section and controls the starting and stopping of the wiper

through
a
latching mechanism (fig. 92).

An electric .washer pump
is
mounted
on the
gear box

section
of the
wiper
and is
driven by the wiper unit gear

assembly (fig. 93).

SERVICE OPERATIONS

WIPER MOTOR
AND
WASHER

PUMP ASSEMBLY

REMOVAL AND INSTALLATION

1.
Raise vehicle hood
and
disconnect, ground lead
at

battery.

2.
Remove engine distributor shielding
and
left bank

spark plug wire vertical shield.

3.
Disconnect left bank spark plug wire bracket-to-

manifold and position assembly to one side.

4.
Disconnect ignition resistor at firewall, then remove

washer pump inlet
and
outlet hose
at
pump valve

assembly.

5.
Remove engine distributor
cap
and position
to one

side;
then disconnect washer pump
and
motor
as-

sembly lead wires.

6. Remove glove
box
door
and
compartment. Refer
to

Section
1
for
removal procedure.

7.
Make sure wiper arms
and
wiper motor are both
in

the parked position; then remove
the
wiper trans-

mission retaining clip and disconnect both transmis-

sion and spacer from crank arm (fig. 93).

8. Remove four wiper motor-to-dash wall mounting

bolts and remove wiper motor from vehicle.

9. With
the aid of
an assistant position the wiper motor

to
the
dash wall
and
install the four motor mounting

bolts,
making sure motor assembly
is in
parked

position.

GEAR

BOX

SECTION
—<

MOUNTING
^*^

GROMMET

MOTOR
_/

SECTION
MOUNTING

/"""GROMMET

ARMATURE
END
PLAY

ADJUSTING SCREW

AND LOCK
NUT

P
^
CRANK

^_ /GROMMETS
RELAY

Fig.
92 -
Relay Control

10.
Position left transmission assembly, spacer
and

right transmission assembly
on
crank arm, then in-

stall
the
retaining clip
in the
groove
in
the crank

arm.

11.
Install glove compartment and door assembly. Refer

to Section
1
for
installation procedure.

12.
Install washer pump and motor assembly lead wires;

then install engine-distributor cap.

13.
Install washer pump inlet
and
outlet hose
to
pump

valve assembly, then install ignition resistor
to

firewall.

14.
Connect left bank spark plug wire bracket-to-mani-

fold, vertical shield and engine distributor shielding.

ROTOR
CAM. ^

CAM SLOT-~-*"'-*

WASHER PUMP^.

DRIVE
PIN
m

M
VALVE

— ASSEMBLY

i

Fig.
91 - Wiper Assembly—Corvette
Fig.
93 - Washer Pump

CHEVROLET CHASSIS SERVICE MANUAL

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

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

ACCESSORIES 15-11

12 VOLTS D.C.
ELECTRIC BRAKE

RELEASE

IGNITION

SWITCH

ENGINE

VACUUM

TRANSDUCER

Fig.
11 - Vacuum and Electrical Diagram

AUTOMATIC LEVEL CONTROL

INDEX

Page

General Description . . 15-11

System Checks and Adjustments 15-13

Service Operation . 15-15

GENERAL DESCRIPTION

A pneumatic level control system that automatically

maintains correct rear trim height of a car under varying

load conditions, the optional automatic level control is

used only in conjunction with the Superlift Shock Absorber

option.

The Superlift Shock Absorber option alone, consists of

the two shock absorbers with pressure lines to a "Tee"

where a ill valve is located, the shocks are inflated

with (or deflated of) compressed air (at any gas station)

to obtain the vehicle level desired with any given load

change.

The automatic leveling system is added to the Superlift

Shock Absorbers and supplies its own compressed air.

The system (fig. 13) consists of a vacuum operated air

compressor with pressure regulator,
and
integral storage

tank, vacuum line to engine, air intake filter, air lines,

and a height control valve.

The COMPRESSOR is a two-stage, vacuum actuated

type, requiring no lubrication. Vacuum supply is taken

from engine carburetor base. High pressure air is
supplied to the reservoir tank by the second stage of

the two-stage compressor. The first stage intake stroke

draws air at atmospheric pressure through a oneway

check valve located in the end of the first stage housing

under the first ^tagei housing cover. On the first stage

compression stroke, the intake valve is closed and the

oneway check valve in the second stage end of the piston

is opened. This allows the air from the first stage

cylinder to flow through the hollow piston into the second

stage cylinder for jhigh pressure compression. The

second stage compression stroke closes the check valve

in the piston and opeijis the check valve in the end of the

second stage housing.

The intake and compression strokes are controlled by a

sliding distributor valive that is actuated through an arm

that is tripped by the piston as it nears the end of each

stroke. Each time the arm actuates the distributor

valve, a different set of holes are covered in the first

stage housing. The distributor valve controls the flow of

intake manifold vacuum and air under atmospheric pres-

CHEVROLET CHASSIS SERVICE MANUAL