battery CHEVROLET CAMARO 1967 1.G Chassis Manual Online

ELECTRICAL-BODY AND CHASSIS 12-2

FJg.
1 - Fuse Panel Assembly

All power window and tailgate circuits require the igni-

tion switch to be "ON" to open or close the windows un-

like past model designs which were operated independ-

ently of the ignition switch.

The windshield wiper and washer switch is new in that

washer button in the center of the knob has been deleted
and its function will be accomplished by pushing the knob.

A set screw is used to retain the knob to the shaft.

In addition to fuses, the wiring harness incorporates

fusible links to protect the wiring. Links are used rather

than a fuse in wiring circuits that are not normally fused,

such as the ignition circuit. Fusible links in the Chevro-

let wiring are four gauge sizes smaller than the cable it

is designed to protect. The links are marked on the

insulation with wire gauge size because of the heavy insu-

lation which makes the link appear a heavier gauge than it

actually is.

Engine compartment wiring harness incorporate sev-

eral fusible links. Each link is identified with its gauge

size.
A fusible link is a length of special wire (normally

four wire gauges smaller than the circuit it is protecting)

used in wiring circuits that are not normally fused, such

as the ignition circuit. The same size wire with a spe-

cial hypalon insulation must be used when replacing a

fusible link.

The links are:

1.
The pigtail lead at the battery positive cable (except

Corvette) is a 14 gauge, brown fusible link protecting

the 10 gange battery charging circuit. This wire is

an integral part of the battery cable assembly and

servicing requires replacing the complete battery

cable assembly. On Corvette models this link is

installed as a molded splice at the solenoid "Bat"

terminal and servicing requires splicing in a new

link.

2.
A 16 gauge black fusible link is located at horn relay

to protect all unfused wiring of 12 gauge or larger.

It is a serviceable piece with an in-line connector

and is not integral with the wiring harness.

3.
The generator warning light and field circuitry (16

gauge wire) is protected by a fusible link (20 gauge

orange wire) used in the "battery feed to voltage

regulator #3 terminal" wire. The link is installed

as a molded splice in the generator and forward lamp

harness and is serviced by splicing in a new 20 gauge

wire as required.

4.
The ammeter circuit on all models is protected by

two orange, 20 gauge wire fusible links installed as

molded splices in the circuit at the junction block or

the solenoid "Bat" terminal (Corvette only) and at the

horn relay. Each link is serviced by splicing in a

new 20 gauge wire as required.

The wiring harnesses use a standarized. color code

common to all Chevrolet vehicles. Under the color code,

the color of the wire designates a particular circuit. The

harness title indicates the type of harness, single of mul-

tiple wire, and also describe the location of the harness.

The body harness is a flat, solid wire assembly and is

routed through the vehicle near the center of the body.

Composite wiring diagrams (figs. 104 thru 124) are in-

cluded at the end of this section.

MAINTENANCE AND ADJUSTMENTS

Maintenance of the lighting units and wiring system

consists of an occasional check to see that all wiring

connections are tight and clean, that the lighting units are

tightly mounted to provide good ground and that the head-

lamps are properly adjusted. Loose or corroded con-

nections may cause a discharged battery, difficult start-

ing, dim lights, and possible damage to generator and

regulator. Wire harnesses must be replaced if insulation

becomes burned, cracked, or deteriorated. Whenever it
is necessary to splice a wire or repair one that is bro-

ken, always use solder to bond the splice. Always use

rosin flux solder on electrical connections. Use insulat-

ing tape to cover all splices or bare wires.

When replacing wires, it is important that the correct

size be used. Never replace a wire with one of a smaller

size.

Each harness and wire must be held securely in place

by clips or other holding devices to prevent chafing or

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-8

is inserted through radiator support opening.

Remove two screws retaining lamp assembly to

lower sheet metal.

Remove three screws retaining lamp assembly to

lender.

To replace lamp assembly, reverse removal proce-

dure and check operation of the unit.
is aligned with flat on pivot shaft. Install stop lock

bolt and torque bolt to 45-60 in, lbs. Make sure that

side-to-side panel alignment is not changed when in-

stalling and tightening the stop.

CAUTION: Do not exceed specified torque

when tightening stop lock bolt.

HEADLAMP PANEL REPLACEMENT-CORVETTE

Refer to Figure 13 for Panel Mounting details.

1.
Remove engine compartment hood as outlined in

Section 1.

2.
Actuate headlamp panel to the open position.

NOTE:
In the event headlamp motor is inop-

erative, manual positioning of the panel can be

accomplished by turning the knurled knob at in-

board end of motor. As an assist in manual

operation of panel, apply light hand pressure to

panel in desired direction of rotation.

3.
Remove positive lead from battery terminal.

4.
Remove headlamp bezel retaining screws and bezel.

5. Remove the sealed beam housing unit as an assem-

bly - disconnect sealed beam leads at harness con-

nector and remove connector from sealed beam

leads;
remove the housing-to-panel retaining screws

and remove housing unit and wiring from panel.

6. Remove motor from panel pivot shaft - see motor

removal procedure. Then remove the panel stop

from panel inboard pivot shaft, and disconnect switch

lead wires from panel, support-mounted motor

switch.

7. Remove the panel retaining bolt access hole plugs

from inside the panel then rotate panel as required

and remove the retaining bolts and slide supports

from ends of panel pivot shaft. Remove bearing, felt

seal, retainer and washer from inboard pivot shaft.

8. Remove panel from its location by alternately disen-

gaging pivots from their retaining slots and with-

drawing unit forward through opening in body (fig.

14).

9. Loosen alien screw in spacer and disassemble parts

from the panel outboard pivot shaft.

10.
Install washer, retainer, felt seal, bearing and

spacer, in that order, to panel outboard pivot shaft.

Do not tighten spacer on shaft at this time.

11.
Position panel in body opening and index panel pivot

shafts in retaining slots; then loosely install support

retaining bolts.

12.
Install washer, retainer, felt seal, bearing and sup-

port, in that order, to panel inboard pivot shaft, and

loosely install support retaining bolts. -

13.
Check side-to-side alignment of panel, making sure

that there is no panel-to-body contact; position

spacer snugly against bearing; then tighten spacer

seat screw to 30-50 in. lbs.

14.
Install stop on panel inboard shaft so that it rests

against bearing, being sure that index mark on stop
15.
Check and align panel to body as follows:

a. Tighten panel pivot support bolts snugly but still

allowing panel to" be moved by applying hand

pressure.

b.
Position panel to the closed position and align

with body so that all surfaces are flush.

c. With the panel in the closed position the outboard

access hole is aligned with the forward bolt head.

Tighten this bolt with the panel in the closed

position - access to bolt head can be obtained by

working through opening between the hood and

body.

d. Rotate panel to obtain access to each bolt head

and torque bolts to 100-140 in. lbs.

e. Connect switch lead wires to support-mounted

limit switch.

16.
Install seaLed beam housing unit and at the same time

position sealed beam lead wires through panel out-

board pivot shaft. Install housing unit retaining

screws and install lead wires in connector, making

sure to match colors between harness and connector.

17.
Install motor assembly - see motor replacement

procedure.

18.
Connect positive lead to battery terminal.

19.
Adjust headlamp panel as outlined under "Headlamp

Panel Travel Adjustment".

20.
Adjust headlamp aiming as outlined under "Headlamp

Adjustment".

21.
Install headlamp bezel and engine compartment

hood - refer to Section 1 for hood installation.

Fig.
14
- Headlamp Panel Removal (Corvette)

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-9

Fig.
15 - Headlamp Panel Actuating Motor Mounting (Corvette)'

HEADLAMP PANEL MOTOR-CORVETTE (Fig. 15)

Removal

1.
Raise hood and as a safety precaution install a bolt

through the hole in the hood support - secure bolt

with a nut.

2.
Remove positive lead from battery terminal.

3.
Disconnect motor lead wire and position it out of the

way.

4.
Turn the knurled knob at inboard end of motor until

the gear seems to turrj freely - turn the knob in one

direction until a definite drag is experienced, then

rotate knob approximately six complete turns in the

opposite direction.

NOTE:
The above step is necessary to produce

a no-load condition on the drive gear and to per-

mit separation of motor from the panel pivot

shaft.

5. Remove the retainer from groove in motor locating

stud then remove the motor-to-support retaining

screw and remove motor assembly from the vehicle.

Installation

1.
Rotate motor and headlamp panel as required to align

slot in motor with headlamp panel pivot shaft, and

install motor on shaft so that the bracket is aligned

with the locating stud.

NOTE:
It may be necessary to turn knurled

knob on end of motor to permit alignment of

motor with shaft.
Slide motor onto shaft until it seats against shaft

shoulder; then install retainer in groove on locating

stud.

Install motor-to-support retaining screw making

sure ground wire is installed between screw head and

bracket.

Connect motor lead wires, making sure that contacts

are clean and that connection is secure.

Connect positive lead battery terminal, remove bolt

from hood support, close hood and check operation of

headlamp panel.

HEADLAMP MOTOR REPLACEMENT-

CAMARO (Fig. 16)

1.
Disconnect battery ground cable and when working on

right headlamp unit, remove battery from vehicle to

gain access to housing retaining bolts.

2.
Remove bezel retaining screws and bezel.

3.
Remove headlamp cover retaining screws and cover

from door assembly.

4.
Manually open door assembly (push door toward cen-

ter of vehicle) and disconnect limit switch

connections.

5. Remove four screws retaining assembly to radiator

support (note location and number of shims, if any).

6. Rotate assembly toward center of vehicle until rear

of unit is exposed, then disconnect wiring connectors

at headlamp and motor assemblies.

7. Rotate assembly until headlamp is facing downward

and carefully remove the assembly from the vehicle

opening.

8. Remove nut attaching motor assembly to pivot arm.

9. Remove two nuts and bolts retaining motor assembly

to base plate and remove motor assembly.

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-15

Fig.
21 - Qlal Quadrant Assembly ~ Camaro

SEAT SEPARATOR CONSOLE LAMPS

COMPARTMENT LAMP REPLACEMENT (Fig.
22)

1.
Remove (pry up) switch assembly from console open-

ing in.the instrument compartment.

2.
Remove bulb from the socket.

3.
Replace bulb and install switch assembly in console

opening.

COURTESY LAMP REPLACEMENT (Fig. 22)

1.
Remove two screws and lens at rear of console.

2.
Remove bulb from retainer.

3.
Replace the bulb, position the lens and install attach-

ing screws.

QUADRANT LAMP REPLACEMENT (Fig. 22)

1.
Remove Dial Quadrant Trim plate retaining screws

and lift trim plate assembly from console opening.

2.
Disconnect lamp socket from the retainer and re-

move bulb from the socket.

3.
To install, insert bulb into the socket and snap the

socket assembly into the retainer.

Position the trim plate assembly into the console

opening and install the retaining screws.
4.

LIGHTING SWITCH REPLACEMENT (Fig. 24)

1.
Disconnect battery ground cable.

2.
Pull control knob out of headlamp ON position.

3.
Reach under instrument panel and depress the switch

shaft retainer (Fig. 25) and remove knob and shaft

assembly.

4.
Remove ferrule nut using Tool J-21932 and remove

switch assembly from instrument panel.

NOTE:
Some Chevelle models require use of

ToolJ-4880.

5. Disconnect the multi-plug connector from the lighting

switch. A screw driver may be inserted in the side
of the switch to pry the connector from the switch.

6. Connect the multi-plug connector to the replacement

switch (Fig. 23). Connect battery cable to battery

terminal and check operation of the light switch'in all

positions.

NOTE:
Ground switch- to check dome lamp

operation.

7. Position switch and bezel to panel mounting hole and

install ferrule jmt.

8. Insert switch control knob and shaft assembly into

switch until retainer engages shaft.

WIPER SWITCH REPLACEMENT (Fig. 26)

1.
Disconnect battery ground cable.

2.
Remove the connectors from the rear of the switch.

NOTE:
On Air Conditioned models it is nec-

essary to remove left A/C outlet duct for acces-

sibility to rear of switch.

3.
Loosen set screw and pull knob from switch shaft.

4.
Remove retaining nuts using special Tool J-21932

and withdraw wiper switch from behind console.

NOTE:
Some Chevelle models require special

ToolJ-4880.

5. To install, reverse removal procedure and check

operation of wipers.

STOPLIGHT SWITCH REPLACEMENT (Fig. 27)

1.
Disengage retaining fingers, disconnect wiring har-

ness connector from switch and unscrew switch from

mounting clip.

2.
Depress brake pedal and push new switch into clip

until shoulder bottoms out against clip.

3.
Check switch position for proper operation. Elec-

trical contact should be made when the brake pedal is

depressed 3/8" to 5/8" from fully released position.

DIMMER SWITCH REPLACEMENT (Fig. 28)

1.
Fold back upper left corner of front floor mat, disen-

gage connector lock fingers, and disconnect multi-

plug connector from dimmer switch.

2.
Remove two screws retaining dimmer switch to toe

pan.

3.
Connect multi-plug connector to new switch and

check operation. Install new switch to toe pan with

two screws. Replace floor mat.

BACKING LAMP SWITCH REPLACEMENT

Located on Mast Jacket (Fig. 29)

1.
Disconnect wiring connector at switch terminals.

2.
Remove switch attaching screws and switch from

mast jacket.

3.
Position new switch to mast jacket, install the re-

taining screws and connect wire connector to switch.

NOTE:
Position gear shift in neutral before

assembling switch to mast jacket.

4.
Check operation of switch.

Located on Transmission (Fig. 30)

1.
Raise and support vehicle.

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 12-22

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
12-26

•
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

ELECTRICAL-BODY AND CHASSIS 12-27

Fig.
41 - Instrument Panel Installation — Chevelle

terminals from rear of cluster assembly (figs. 43

and 44).

12.
Remove four screws retaining upper section of dus-

ter housing to panel and remove cluster from the in-

strument panel and to a suitable working area for

necessary service (fig. 42).

Installation

1.
Position cluster assembly to rear of panel and install

four upper retaining screws.

2.
Connect cluster lamps, wiring connectors and wiring

harness assembly to the cluster assembly.

3.
Position instrument panel assembly into console

(hold panel at center and install center screws) and

install upper and lower retaining screws.

NOTE:
At this point temporarily reconnect

battery and check operation of cluster.

4.
Working under the console, install four lower screws

retaining lower section of cluster cover to rear of

panel.

5. Install radio brace screw at rear of radio.

6. Connect speedometer cable to speedometer and speed

warning device control knob.

7. Install A/C distributor duct and connect A/C hoses to

duct (if so equipped).

8. Install mast jacket upper support clamp.

9. Position steering shaft in the steering coupling and

install retaining bolt.

10.
Tighten mast jacket lower clamp (refer to Steering,

Section 9 for spring tension adjustment).

11.
Connect battery ground cable.

FUEL GAUGE AND/OR AMMETER

REPLACEMENT

1.
Disconnect battery ground cable.

2.
On air conditioned models, disconnect hose and re-

move air outlet from panel.

3.
Disconnect wiring connectors and cluster lamps from

rear of gauge assembly.

4.
Remove mounting plate retaining screws (3) and re-
move fuel gauge from rear of cluster housing.

5. Remove terminal nuts (3) securing gauge to template

and replace gauge.

6. To install, reverse the removal procedure.

CLOCK REPLACEMENT

1.
Disconnect battery ground cable.

2.
Remove clock set shaft knob retaining nut and knob.

3.
Disconnect wiring connector at clock terminal and

cluster lamp from clock housing. On A/C models,

disconnect hose from air distributor duct.

4.
Remove two screws retaining clock housing to

cluster cover and remove clock.

5. To install, reverse removal procedure.

SPEEDOMETER REPLACEMENT

1.
Disconnect battery ground cable.

2.
Remove instrument cluster assembly as previously

outlined in this section.

3.
Remove screws (8) attaching cover to rear of cluster

housing.

4.
Remove two screws attaching speedometer assembly

to cluster cover and carefully remove speedometer

head.

NOTE:
Servicing of the speedometer assembly

should be performed by an authorized
AC
speed-

ometer service station.

5. To install, reverse 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.

Fig.
42 - Instrument Cluster Installation

CHEVROLET CHASSIS SEtVKE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-29

Fig.
43b - Speed Warning Device

TEMPERATURE AND/OR OIL PRESSURE

GAUGE

1.
Disconnect battery ground cable.

2.
Remove ash tray and ash tray retainer.

3.
Disconnect A/C hose from the distributor duct.

4.
Disconnect wiring connectors and lamp bulbs from

rear of gauge.

5. Disconnect oil pressure pipe fitting from rear of oil

pressure gauge.

6. Remove (3) screws retaining gauge assembly to

cluster cover and disengage unit from cover.

7. Remove (4) retaining nuts and remove gauge from

template.

8. To install, reverse removal procedure.

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 the following condi-

tions is indicated:

• Low oil pressure

• Defective wiring or switch

• High engine temperature

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 using Tool J-21757, replace with

new unit, and check operation.

GENERATOR INDICATOR

Ignition on, Engine not Running and

Telltale Light Off

1.
Indicator bulb burned out, replace bulb.

2.
Open circuit or loose connection in the telltale light

circuit.

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 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.

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY
AND
CHASSIS
12-31

CHEVY II INSTRUMENTS AND GAUGES

INDEX

Page
Page

General Description -.....
12-31

Service Operations.
12-31

Instrument Panel
. 12-31

Instrument Cluster
12-31

Fuel Gauge
12-32

12-32
Clock,
Speedometer
12-34

Speedometer Catte
12-34

Indicator Lights
12-34

Oil Pressure Indicator
12-34

Generator Indicator
12-34

Temperature Indicator
12-34

GENERAL DESCRIPTION

The Chevy
n
instrument cluster assembly consists
of:

a speedometer;
a
fuel gauge;
a
generator, temperature

and
oil
pressure indicator lamps, and includes
a
clock
on

deluxe models. Except
for the
speedometer,
all of the

cluster lamps, instruments and gauges
of
the cluster
may

be serviced without removing
the
instrument cluster
as-

sembly from
the
console.

In addition
to the
instrument indicator lamps,
a
brake

warning lamp
is
included
in the
cluster
as
standard

equipment.
The
indicator
is
connected
to
thfc parking

brake and brake pressure differential switches andserves
a dual function.
It
lights when
the
parking brake
is ap-

plied
and
also when
the
brake pedal
is
applied,
if a mal-

function 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 manaul.

Regular maintenance
is not
required on
the
instrument

cluster
or its
components other than r^Mfitftl^i^g clean

and tight electrical connections, replacing defective parts

and keeping
the
speedometer cable properly lubricated.

SERVICE OPERATIONS

INSTRUMENT PANEL

INSTRUMENT CLUSTER

Removal
and
Installation {Figs.
45
thru
48)

1.
Disconnect battery ground cable.

2.
Remove mast jacket upper support clamp (refer
to

Steering, Section
9, for
complete procedure
on low-

ering jacket) and lower steering column.

NOTE:
Apply protective material
to the
mast

jacket
to
prevent damage
to the
painted surfaces.
3.
Disconnect retaining collar securing speedometer

cable
to
speedometer head.

4.
Remove screws retaining cluster
to
console.

5. Pull cluster forward
of
console opening and discon-

nect
all
wiring
and
lamp connections. Remove

cluster from vehicle.

CAUTION:
Do not
pull cluster outward further

than slack
in
wiring harness will allow, other-

Fig.
45-
Instrument Cluster Installation
—
Chevy
II

Fig.
46 -
Speed Warning Device

CHEVtOtET CHASSIS SERVICE MANUAL