
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