1967 CHEVROLET CAMARO head light

SECTION 12

ELECTRICAL-BODY AND CHASSIS

CONTENTS
OF
THIS
SECTION

Page
Page

System 12-1

Instruments and Gauges 12-21

Directional Signal 12r40
Windshield Wipers and Washers 12-44

Wiring Diagrams 12-56

Special Tools 12-60

LIGHTING SYSTEM

INDEX

Page

General Description
!2-i

Maintenance and Adjustments
•.................. 12-2

Headlamp Adjustment......................
12-3

Headlamp Panel Travel Adjustment.
12-5

Service Operations.
. . .. 12-5

Front Lighting
12-5

Headlamp
. 12_5

Parking Lamp
12-5

Fender Lamp
. 12_^

Headlamp Panel
12-8

Headlamp Panel Motor
^2-9

Rear Lighting
l2-10

Tail, Stop and Directional Lamps
12-10
Page

Backing Lamps
12-14

License Plate Lamp
12-14

Automatic Transmission Quadrant Lamp
12-14

Seat Separator Console Lamps
. 12-15

Lighting Switch
. . 12-15

Wiper Switch.
12-15

Stoplight Switch
12-15

Dimmer Switch
12-15

Backing Lamp Switches
12-15

Neutral Safety Switches
12-17

Parking Brake Alarm Switch
................. 12-19

Instrument Panel Compartment Lamp/Switch
12-19

Cirgarette Lighter
12-19

GENERAL DESCRIPTION

.
The lighting system includes: the main lighting switch,

stop light, dimmer, and backing lamp switches, head-

lamps, parking lamps, stop, tail and directional lamps,

instrument illumination and indicator lamps, and the

necessary wiring to complete the various circuits. A

fuse panel provides convenient power take offs and fuse

clips for the appropriate circuits (fig. 1).

Chevrolet and Chevelle headlamp installation is all

new in that the headlamps are located in the radiator

support with adjusting screws and springs. Eliminating

the need for having separate headlamp housings. Chev-

rolet and Chevelle headlamp retainers and springs are

interchangeable.

Chevy n headlamp housings are new because of revised

front end styling and Corvette front end lighting is basi-

cally carryover.

Front fender lamps have been added as an option for

Chevrolet models and as standard equipment on Caprice

series.

Camaro models use single headlamps and the Rally

Sport model headlamps are covered by a retractable

section of the grille when lamps are not used. The sec-

tion of the grille covering the headlamps folds back when

lights are required; the headlamps are stationary. The

covering is retracted by a small electric motor mounted

to the headlamp housing. The headlamps are automat-

ically uncovered when the headlight switch is pulled "ON"

for illumination. If at any time the electrical circuit

becomes inoperative, the lamps can be uncovered manu-

ally. The ignition switch must be
"ON"
in order to close

the headlamp doors.

Parking lamp for Chevelle and Chevrolet models are
new due to revised front end sheet metal and bumper

styling. Parking lamps are located in the bumper on

Chevrolet, Chevelle and Chevy n models

Camaro parking lamps are located in the radiator

grille except for the Rally Sport models on which the

parking lamps are in the valance panel. For styling

reasons, the lens is white and an amber glass bulb is

used. All Camaro parking lamps require a separate

ground wire to assure a good ground contact because of

the plastic grille and painted contact surfaces.

The Chevrolet tail, stop, and directional lamps are in

one housing with a three section lens design on Impala

and Caprice sedans. The center lens for Impala series

is the back-up lamp. The center lens on the Caprice is

a tail lamp with the back-up lamps being located in the

rear bumper. Chevrolet station wagons have three indi-

vidual housings with three lenses, the center lamp being

the back-up. Biscayne and Bel-Air sedans have a single

housing and lens for tail, stop, and directional lamp with

a similarly constructed back-up lamp inboard and adja-

cent to it.

Chevelle tail, stop, and directional lamps are a single

lens design that follows through with the rear fender

styling. The back-up lamp is located in r.ear bumper.

Camaro models except Rally Sport have tail lamps

with integral back-up lamps mounted inboard of the rear

fenders between the trunk opening and bumper. The

Rally Sport model has dual tail lamps in the rear housing

and valance mounted back-up lamps.

Corvette, Chevy n, and Corvair tail and directional

signal lights are carryover. The Corvette has new back-

up lamps center mounted above the license plate opening.

CHEVROLET CHASSIS SERVICE

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 12-3

Fig.
2 - T-3 Safety Aimer

wearing away the insulation due to vibration.

By referring to the wiring diagrams, circuits may be

tested for continuous circuit or shorts with a conventional

test lamp or low reading volt meter.

HEADLAMP ADJUSTMENT-

T-3 HEADLAMPS

CAUTION: Check and tighten radiator support

grille retaining bolts prior to attempting head-

lamp aiming. Distorted grille or supports in

this area will hinder proper aiming of head-

lamps. On Corvette models make sure head-

lamp panel is adjusted properly - refer to

"Headlamp Panel Travel Adjustment".

When aiming headlamps, vehicle should be filled to ca-

pacity with gas, oil, and water but no load. Tires should

be uniformly inflated to recommended pressure.

the T-3 Safety Aimer-Type B (fig. 2), is used for the

headlamp aiming description that follows. An adapter is

required with the Type B T-3 Aimer when adjusting the 7

inch headlamp used on the Chevy n vehicle.

1.
Drive vehicle onto selected aiming area. Bounce

vehicle several times and allow to settle.

2.
Remove headlamp bezels.

3.
Mount the T-3 Aimers on either the No. 1 or No. 2

pair of headlamps so that "the points of the headlamps

engage the smooth inner ring of the aimers.
HORIZONTAL

AIMING

SCREW

STRING OVER

"2R" ON AIMER ARM

Fig.
4—-Headlamp Horizontal Adjustment

NOTE:
In the dual headlamp installation, the

inboard unit is designated No. 1 and the outboard

unit is designated No. 2.

4.
Secure the aimers to the headlamp units by firmly

pressing knob at center of each aimer (fig. 3). Ro-

tate crossarms inboard to approximate horizontal

position.

NOTE:
Moisten suction cups slightly to obtain

maximum holding force.

5. With both aimers in place, knot both ends of elastic

string and, using slots provided, fasten string across

horizontal crossarms of each aimer.

6. Rotate both aimers so that the string just clears the

points on the crossarms.

HORIZONTAL ADJUSTMENT

7. a. Turn horizontal aiming screw, Figure 4, on left-

VERTICAL ADJUSTMENT SCREW

Fig.
3 - Installing Aimer on Headlamp Unit
Fig.
5 - Headlamp Vertical Adjustment

CHEVROLET CHASSIS SERVICE MANUAL

ELECTRICAL-BODY AND CHASSIS 12-5

Fig.
8—Turning Level Adjusting Screw to Calibrate Aimer

HEADLAMP PANEL TRAVEL ADJUSTMENT

Corvette (Fig. 9)

The headlamp panel travel is limited by two adjusting

screws which are located on the arms of the shaft

mounted stop.
Fig.
9—Headlamp Panel Travel Adjusting Screw

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

through the hole in the hood support - secure bolt

with a nut.

2.
Adjusting screw (A) limits headlamp panel travel in

open position - adjust this screw so that mounting

face of panel is within 2 degrees of vertical in the

fully open position.

NOTE: Each headlamp operates independently

of the other, therefore individual adjustment is

required for each panel.

3.
Adjusting screw (B) limits headlamp panel travel in

closed position - adjust this screw so that panel is

flush to upper body panel in the fully closed position.

4.
Lock both screws by tightening lock nut against stop.

5.
Remove safety bolt as installed in Step 1 and close

the hood.

SERVICE OPERATIONS

FRONT LIGHTING

HEADLAMP REPLACEMENT (Figs. 10 and 13)

1.
On Corvette and Camaro Rally Sport models, rotate

the headlamp panel to the open position.

2.
Remove headlamp bezel retaining screws and remove

bezel. On Chevrolet, Chevelle and Camaro models

lift bezel to disengage retaining tabs from slots in

filler panel.

3.
On Chevy n models remove three retaining ring at-

taching screws. On other models disengage spring

from the retaining ring and remove two attaching

screws.

4.
Remove retaining ring, disconnect sealed beam unit

at wiring connector and remove the unit.

5.
Attach connector to replacement unit and position

unit in place making sure the number molded into the

lens face is at the top.

NOTE: In the dual headlamp installation the

inboard unit (NO. 1) takes a double connector, the
outboard unit (No. 2) takes a triple connector

plug.

6. Position retaining ring into place and install the re-

taining ring attaching screws and spring (as

applicable).

7.
Check operation of unit and install the headlamp

bezel.

PARKING LAMP REPLACEMENT

Bulb

1.
Remove two lens retaining screws and disengage lens

from housing.

2.
Replace bulb, check operation of lamp, reinstall lens

and retaining screws.

Lamp Housing

Chevrolet, Chevelle and Chevy II (Figs. 10 and 11)

1.
Disconnect lamp wire assembly in-line connector

from wiring harness.

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 12-10

10.
To install, replace motor assembly, and reverse re-

moval procedure.

REAR LIGHTING SERVICE

TAIL, STOP AND DIRECTIONAL LAMPS

Bulb Replacement (Fig. 17)

1.
Disconnect lamp socket from rear of lamp unit and

remove bulb from socket.

NOTE:
Bulb removal on station wagon models

and Corvette requires, removal of the lens to

gain access to the bulb.

2.
Replace bulb and plug socket back into lamp housing.
Lamp Housing Replacement

Chevrolet, Chevelle Station Wagon,

Camaro and Chevy II (Fig. 17)

1.
Disconnect bulb socket from rear of lamp unit.

NOTE:
On station wagons remove lens to gain

access to lamp or screws securing lamp housing

to body.

2.
Remove nuts at rear of housing retaining lamp hous-

ing to vehicle body, remove housing from vehicle.

3.
Remove lens retaining screws or nuts, remove lens

and transfer to new housing unit.

4.
To install reverse removal procedure and check op-

eration of lamp unit.

HEADLAMP

WIRING ASSEMBLY
MOTOR

INSTALLATION

TO PARKING LAMP

TO RETR. HDLP. MOTOR

TO HEADLAMP
HEADLAMP

DOOR ASSEMBLY

Fig.
16- Headlamp Motor Installation (Comoro)

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 12-16

BACK-UP LAMP CONN.

CONSOLE CTSY

LAMP CONN

CLOCK CONN

NEUTRAL SAFETY SWITCH

Fig.
22 - AutoTrans — Seat- Separator Wiring — Chevelle

TAIL

PANEL Ll<

J
TAIL

LIGHTS ^^g

9

""TUtflll -^ ""

DOME
LIGHT

r

•I

m

/

LIGHTS
FUSE HEADLIGHTS

9R

jl PARKING LIGHTS

*^ R ATTPRY

Fig.
23 - Light Switch Terminal Connections
Fig.
24 - Light Switch and Cigarette

Lighter Installation

CHEVROLET CHASSIS SERVICE MANUAL