Chevrolet 30 Series 1967 Service Manual page 508

ELECTRICAL—BODY AND CHASSIS 12-8
Bulb Replacement (Cab mounted directional lamps)
1. Remove three screws which retain rear lens to lamp
assembly and remove lens.
2. Replace bulb and check operation of lamp.
3. Position lens and install attaching screws.
WIPER SWITCH REPLACEMENT (Fig. 17)
1. Disconnect battery ground cable.
2. Loosen set screw and remove wiper knob.
3. Remove bezel (using Tool J - 21932) and retaining nut.
4. Push switch from panel opening and remove from
behind instrument cluster.
5. Disconnect wiring at switch terminals.
. To install, reverse removal procedure and check
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operation of unit.
LIGHT SWITCH REPLACEMENT (Figs. 11 & 17)
1. Disconnect battery ground cable.
2. Reaching up behind instrument cluster, depress shaft
retaining button and remove switch knob and rod.
3„ Remove bezel (using Tool J - 21932) and retaining nut.
4. Push switch from panel opening and remove from
behind instrument panel.
5. Disconnect multiple wiring connectors at switch
terminals.
. To install, reverse removal procedure.
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STOPLIGHT SWITCH REPLACEMENT
Chevy Van (Fig. 12)
1. Raise and support vehicle.
2. Remove radiator air
assembly.
F ig . 11 - Light Switch - C hevy Van
deflector and extension
Fig. 12 - Stop Lamp Sw itch
3. Disconnect the two electrical connectors from the
switch which is located under the toe pan adjacent to
the brake lever arm.
4. Remove two screws attaching the switch to the
underside of the toe pan and remove switch.
5. Install new switch with the switch lever arm between
the brake lever arm and the toe pan and connect the
two connectors.
. Switch adjustment should be such that 1/2" to 1/4"
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pedal will make electrical contact. If necessary,
adjust the switch by bending the switch bracket until
proper operation is obtained.
Tilt Cab Models (Fig. 13)
1. Disconnect the two electrical connectors from the
switch which is located under the toe pan adjacent to
the brake lever arm.
2. Remove two screws attaching the switch to the toe
pan and remove switch.
3. Install new switch and connect the two connectors.
Conventional Cab Models (Fig. 14)
1. Disconnect wiring harness connector from switch and
unscrew switch from mounting clip.
2. Depress brake pedal and push new switch into clip
until switch shoulder bottoms out against clip.
3. Check switch for proper operation. E lectrical con­
tact should be made when pedal is depressed 3 /8 " to
5 /8" from fully released position.
DIMMER SWITCH REPLACEMENT
1. Fold back upper left corner of the floor mat and re­
move two screws retaining switch to the toe pan.
2. Disconnect wiring connector from switch terminals.
3. Connect wiring to replacement switch and check
operation.
4. Position switch to toe pan and install retaining
screws.
- C h evy Van
Lower vehicle.
CHEVROLET TRUCK SERVICE M ANUAL