1967 CHEVROLET CAMARO electrical

ELECTRICAL-BODY AND CHASSIS 12-18

TO BACK UP

LAMP SWITCH

TO STOP LAMP

SWITCH

Fig.
29 - Backing Lamp Switch on Mast Jacket (Chevelle)

tray, trim plate assembly, and indicator lens and

housing from console.

Disconnect bulbs from housing. Disconnect multiple

connector at switch terminals or on Camaro models

from the wiring harness at the in-line connector.

Remove switch retaining nuts and switch.

Tp install new switch, clamp pawl rod against contact

point "B" of detent and align slot in contact support
6.

7.
with drive hole in switch and insert a pin (3/32" dia.)

to hold in place. Switch is now in drive position.

Position switch to lever and bracket assembly with

lever engaged in contact support and install retaining

nuts.

Remove clamp and pin, connect wiring and check op-

eration of switch.

Install indicator lamps, housing, lens, ash tray and

trim plate assembly.

Corvette {Fig. 32)

1.
Disconnect shift control lever arm from the control

rod.

2.
Remove the shift control knob.

3.
Remove Trim Plate retaining screws and trim plate

assembly.

4.
Remove control assembly retaining screws.

5. Remove control assembly from the seal and cut

switch wiring.

6. Remove switch retaining nuts and switch from, the

control assembly.

7. To install, position gearshift in "Drive" position

align hole in contact support with hole in switch and

insert pin (3/32" dia.) to hold support in place.

8. Place the contact support drive slot over the drive

tang and tighten switch mounting screws.

9. Splice wiring harness to switch wiring.

10.
Install trim plate assembly and shift lever control

knob.

11.
Connect shift lever arm to the transmission control

Fig.
30 - Backing Lamp Switch on Transmission

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-19

VIEW A
•CONTACT SUPPORT

DRIVE SLOT IN LINE

WITH HOLE IN SWITCH

PAWL
CONTACT POINT B

CONTACT SUPPORT

DRIVE SLOT IN LINE

WITH HOLE IN SWITCH

FLOOR SHIFT

(EXCEPT CAMARO)
COLUMN SH

Fig.
31 - Neutral Safety Switches

PARKING BRAKE ALARM SWITCH REPLACEMENT

Corvette (Fig. 33)

1.
Remove seat belt retainer and parking brake cover

assembly from center console.

2.
Disconnect wire from brake alarm switch.

3.
Remove retaining screw and switch from

reinforcement.

4.
Position new switch to reinforcement and install re-

taining screw.

5. Connect switch wire and check operation of switch.

6. Install cover and seat belt retainer assembly.

Chevrolet, Chevelle, Chevy II and Camaro (Fig. 34)

1.
Disconnect wiring connector at switch terminal.

2.
Remove nut and lock washer or retaining bolt and

disengage switch from brace.

3.
To install, reverse removal procedure.

INSTRUMENT PANEL COMPARTMENT

LAMP/SWITCH REPLACEMENT

1.
Disconnect battery ground cable.

2.
Reach into glove box, depress bulb in end of switch
and turn counterclockwise to remove bulb.

3..
Remove switch from socket. Carefully detach wire

and terminal from switch.

NOTE:
On some model switches, the wire and

terminal cannot be detached from the switch

making it necessary to cut and splice the switch

wire.

4.
Insert wire and terminal into new switch.

5. Push switch into place and install bulb by setting it in

place, depressing and turning it clockwise.

CIGARETTE LIGHTER REPLACEMENT

Chevrolet, Chevy II, Camaro and Corvette (Fig. 23)

1.
Disconnect battery ground cable.

2.
Disconnect wire connector at rear of lighter unit

under dash.

3.
Remove retainer from rear of housing assembly and

disengage lighter unit from panel.

4.
To install, reverse removal procedure.

Chevelle (Fig. 35)

1.
Disconnect battery ground cable.

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-20

Fig.
32 - Neutral Safety Switch — Corvette
Fig.
33 - Paricing Brake Alarip Switch — Corvette

CHEVROLET & CAMARO

CHEVELLE & CHEVY E

Rg.
34 - Parking Brake Alarm Switch Exc. Corvette

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-21

2.
Remove ash tray, retainer attaching screws and

retainer.

3.
Remove Air Conditioning distributor
duct'
retaining

screws and duct.

4.
Remove heater and/or Air Conditioning control panel

assembly retaining screws and push panel assembly

from console.

NOTE:
If interference between control panel

and radio is encountered, loosen radio retaining

nuts.

5. Remove radio control knobs, bezels and retaining

nuts.

6. Disconnect radio wiring harness and antenna lead-in.

7. Remove radio rear brace attaching screw and re-

move ra(Jio from vehicle.

8. Remove ignition switch bezel nut using Tool J-7607

and push switch rearward.

9. Disconnect cigarette wiring connector.

10.
Remove cigarette lighter retainer and lighter as-

sembly from console.

11.
To install, reverse removal procedure.
Fig.
35 - Cigarette Lighter — Chevelle

CHEVROLET INSTRUMENTS AND GAUGES

INDEX

Page

General Description 12-21

Service Operations 12-22

Instrument Cluster........................ 12-22

Instrument Cluster Lamps 12-22

Printed Circuit .
* •
12-22

Speedometer 12-22

Speedometer Cable 12-23

Fuel Gauge 12-23
Page

Clock 12-24

Tachometer 12-24

Ammeter . . 12-24

Temperature Gauge 12-24

Oil Pressure Gauge 12-24

Oil Pressure Indicator 12-24

Generator Indicator 12-26

Temperature Indicator 12-26

GENERAL DESCRIPTION

The standard instrument cluster on all models contains

seven circular housings consisting of: a speedometer;

fuel gauge; oil pressure, generator and temperature indi-

cators; right and left directional signal indicators; brake

warning and high beam indicators; and includes a clock

on deluxe models. An optionally available instrument

cluster provides special instrumentation which includes

in addition to the speedometer and clock: a tachometer;

fuel, oil pressure, ammeter and engine temperature

gauges; which replace the standard fuel gauge and indi-

cator lights. The brake warning indicator is relocated

to the tachometer dial face and the high beam and direc-

tional indicators are positioned in the speedometer dial

face.

Instrument cluster removal is recommended before at-

tempting to service the printed circuit and gauges even

though some units may be accessible from behind the

cluster. Limited working space under the instrument

panel increases the possibility of electrical malfunctions

due to poor connections, and damaged or improperly in-

stalled printed circuit. The printed circuit is service-

able but not repairable and requires complete
replacement.

The brake warning light serves a dual purpose. It

functions as an indicator when the parking brake is ap-

plied and also warns if a malfunction (loss of hydraulic

pressure) should occur in the brake system. The two

separate switches, which provide the signal to operate the

indicator, are located at the parking brake support and in

the hydraulic brake line at the master cylinder. Service

of the brake pressure, differential switch unit at the

master cylinder is described in Section 5 of this manual.

All indicator and cluster illumihating lamps may be

replaced without removing the cluster from the vehicle.

The bulbs are installed in plastic holders which lock into

the cluster housing and make contact with the printed

circuit. An instrument lamp is used to illuminate the

ignition switch. A special fibre optic lucite wiring

transmits light from the lamp to the switch.

Regular maintenance is not required on the instrument

cluster or its components other than maintaining clean,

tight electrical connections, replacing defective parts and

keeping the speedometer cable properly lubricated.

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-22

SERVICE OPERATIONS

INSTRUMENT CLUSTER

Removal and Installation (Figs. 36 thru 40)

I. Disconnect battery ground cable.

2:
Remove four screws retaining instrument bezel to

top edge of instrument console. Disengage tabs on

bezel lower section from clips on instrument console

and remove bezel.

3.
Protect mast jacket to prevent scratching when re-

moving cluster assembly.

4.
Remove eight screws securing leading edges of in-

strument cluster to console and pull cluster forward

from console opening.

5. Reaching behind cluster disconnect speedometer ca-

ble,
chassis harness connector, clock and speed

warning device connections (if so equipped) at rear of

cluster.

NOTE:
On models- with gauge pack, disconnect

oil pressure line also.

6. When all disconnects are made, remove cluster as-

sembly from vehicle.

7. To install, position cluster assembly to console

opening and connect speedometer cable, chassis

harness connector and other electrical connections

as required.

8. Position cluster in console opening and install eight

retaining screws.

NOTE:
Make sure ground strap between

cluster case and center right lower attachment

is properly installed.

9. Engage tabs on instrument bezel with clips on con-

sole and position bezel in console opening, then in-

stall four retaining screws.

10.
Install speed warning device control attaching nut and

knob,
if so equipped.

II.
Connect battery ground cable and check operation of

cluster assembly.

Fig. 36 - Instrument Cluster Installation — Chevrolet
Fig. 37 - Speed Warning Device

INSTRUMENT CLUSTER LAMP REPLACEMENT

(Figs.
38 and 39)

1.
Rotate socket counterclockwise to remove from rear

of cluster housing.

2.
To remove bulb, if socket is black color, pull bulb

straight out. If socket is gray color, depress and

rotate bulb, then pull out.

3.
Install replacement bulb in socket, pressing inward

to lock in place.

4.
Insert socket into housing, with lugs entering notches

in case, and rotate clockwise to lock in place.

PRINTED CIRCUIT REPLACEMENT (Figs. 38 and 39)

1.
Remove instrument cluster as previously described

in this section.

2.
Remove all cluster illuminating and indicator lights

from cluster housing.

3.
Remove fuel gauge and clock terminal nuts securing

printed circuit to housing.

4.
Remove four hex head screws retaining printed cir-

cuit to the cluster housing and remove the printed

circuit. . .

5. To install, reverse removal procedure.

CAUTION:. The retaining screws and terminal

nuts are part of the grounding circuit and must

be installed to provide the proper ground con-

nections for the printed circuit.

SPEEDOMETER
REPLACEMENT

1.
Remove instrument cluster as previously described

in this section.

2.
Remove screws retaining rear cover to the cluster

assembly. Bend ground strap away from cover and

remove cover.

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-23

IGNITION SWITCH LIGHTING

VIEW A

1.
Clock Knob Assembly

2.
Instrument Cluster Lamps

3. R.H. Directional Indicator

4.
"Gen'*
Indicator

5. Fuel Gauge
Fig.
38 - Instrument Cluster Connections

6. L.H. Directional

Indicator

7. "Hot" indicator

8. "Brake" Indicator

9. "Bright" Indicator
10.
"Oil Press" Indicator

11.
Clock Cover (jl5,0OQ)

12.
Clock Assembly (16,000)

1.3; Printed Circuit

14.
Instrument Panel Connector

3.
Remove screws retaining speedometer to the housing

and remove speedometer from rear cover.

NOTE:
Servicing of the speedometer assembly

should be performed by an authorized
AC
Speed-

ometer Service Station.

4.
To install, reverse the removal procedure.

SPEEDOMETER CABLE

Replacement or Lubrication

1.
Disconnect the speedometer cable from the speedom-

eter 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.

FUEL GAUGE REPLACEMENT

1.
Remove instrument cluster as previously described

in this section.

2.
Remove cluster lamps from gauge cover plate and

remove terminal nuts attaching circuit to gauge.

3.
Carefully move printed circuit away from gauge and

remove screws retaining gauge assembly to the

cluster housing.

4.
Remove gauge assembly from cluster housing and

remove three terminal nuts attaching gauge to the

cover plate.

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-24

1.
Temperature Gauge

2.
Instrument Cluster Lamp

3.
R.H. Directional Indicator

4.
Ammeter Gauge
Fig. 39- Optional Gauge Cluster

5. Fuel Gauge

6. L.H. Directional Indicator

7. Tachometer

8. "Brake" Indicator

9. "Bright" Indicator
10.
Oil Pressure Fitting

11.
Chassis Harness Connector

12.
Clock Assembly

13.
Printed Circuit

NOTE:
Observe carefully the stack up of the

internal parts of the fuel gauge assembly.

5. To install, reverse removal procedure.

CLOCK OR TACHOMETER REPLACEMENT

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.
For clock replacement, remove clock set shaft knob

at front of console.

3.
Remove cluster lamps from cover, circuit attaching

screws, and terminal nuts at circuit to gauge attach-

ing points.

4.
Move printed circuit away from gauge and remove

screws retaining
•_
gauge or clock to the cluster

housing.
•5.
Remove unit, from housing and cover plate from

gauge unit.

6/To install, reverse removal procedure.

AMMETER TEMPERATURE AND OIL PRESSURE

GAUGES REPLACEMENT

1.
Remove instrument cluster as previously described

iii this section.

2.
Remove instrument lamps, attaching screws or nuts

and wiring connections as required.

3.
Remove gauge assembly backing plate retaining

screws and remove gauge assembly from cluster

housing.

4.
Remove terminal nuts and/or screws retaining gauge

to the backing plate and separate plate from the

gauge.
•

5. To install, reverse 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 condi-

tions is indicated:

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY
AND
CHASSIS
12-26

•
Low oil
pressure

• High engine temperature

• Defective wiring
or
switch

connector from sender

in block above starter
on

and
at
left front
of
distributor
on V-8
Sending Unit Replacement

1.
Disconnect wiring harness

unit terminal (located

L-6 engines

engines).

2.
Remove sender unit using Tool J-21757
or 12
point

socket, replace with
new
unit
and
check operation.

GENERATOR INDICATOR

1.
Ignition
on,
Engine
not
Running
and
Telltale Light

Off.

• Indicator bulb burned out, replace bulb.

• Open circuit
or
loose connection
in the
telltale

light circuit.

2.
telltale Light Stays
on
after Engine
is
Started.
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, located
in the
instrument

panel, consists
of a
red light which will indicate
an
over-

heated 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
oh L-6
engines)

and replace with new unit.

3.
Refill cooling system
and
check operation
of
unit.

CHEVELLE INSTRUMENTS AND GAUGES

INDEX

Page

General Description
* *
i2-26

Service Operations
12-26

Instrument Panel
12-26

Instrument Cluster.
12-26

Fuel Gauge and/or Ammeter
12-27

Clock,
i 12-27

Speedometer
12-27
Page

Speedometer Cable
.
. 12-27

Temperature Gauge
12-29

Oil Pressure Gauge
12-29

Indicator Lights.
. 12-29

Oil Pressure Indicator
12-29

Generator Indicator
. . 12-29

• Temperature Indicator
12-29

GENERAL DESCRIPTION

The Chevelle instrument cluster assembly consists
of:

a speedometer;
a
fuel gauge;
a
generator,
an
engine
tem-

perature and an
oil
pressure indicator lamp, and includes

a clock
on
deluxe models.
On
super sport models,
am-

meter, coolant temperature
and oil
pressure gauges
re-

place
the
appropriate indicator lights. Except
for the

speedometer,
all of the
indicator lamps, instruments
and

gauges
of
these clusters may
be
serviced without remov-

ing
the
instrument cluster assembly from
the
vehicle.

In addition
to the
instrument indicator lamps,
a
brake

warning lamp
is
included
in the
cluster
as
standard

equipment.
The
indicator
is
connected
to the
parking
brake
and
brake pressure differential switches
and

serves
a
dual function.
It
lights when the parking brake

is applied
and
also when
the
brake pedal
is
applied,
if a

malfunction should occur
in the
brake system
due to a

loss
of
hydraulic pressure. Servicing
of the
hydraulic

pressure differential switch
is
covered
in
Section
5 of

this manual.

Regular maintenance
is not
required on the instrument

cjLuster
or its
components other than maintaining dean

and tight electrical connections, replacing defective parts

and keeping
the
speedometer cable properly lubricated.

SERVICE OPERATIONS

INSTRUMENT PANEL ASSEMBLY

INSTRUMENT CLUSTER (Figs.
41
thru
44)

Removal

1.
Disconnect battery ground cable.

2.
Remove steering coupling bolt and disconnect steer-

ing shaft from coupling.

3.
Loosen mast jacket lower clamp.

4.
Remove
air
conditioning center distributor duct
(if

so equipped).

5. Remove radio rear support bracket screw.

6. Remove mast jacket upper support clamp and retain-

ing bolts from lower support (refer
to
Section
9,

Steering).
CAUTION: Cover mast jacket
and
parl

brake handle with
a
suitable material
to
prevc

scratching.

7.
Disconnect speedometer cable
at
rear
of
cluster

housing
and
speed warning control knob
at
panel
(if

so equipped).

8. Remove instrument panel retaining screws (nine

upper and five lower).
.

9. Working under the console remove four lower retain-

ing screws from instrument cluster housing.

10.
Pull instrument panel assembly from console and
lay

forward on mast jacket.

11.
Disconnect wiring harness, cluster lamps and wiring

CHEVROLET CHASSIS SERVICE MANUAL