Light Switch; Cargo Light Switch - Chevrolet 1979 Light Duty Truck Owner's Manual

Low speed is obtained by sliding the control knob to the second
position to the right.
High speed is obtained by sliding the control knob to the extreme right
position.
Mist
The feature, intended to remove incidental windshield spray such
as from passing vehicles is activated by moving the control knob to
the extreme left and holding it in this position. The wipers will continue
to operate until the control knob is released and allowed to return to
the OFF position.
The Washer System is operated by depressing the control knob for one
or two seconds in any position. In the OFF position the wipers will
operate 3 to 5 times and then stop.

Light Switch

The three position light switch controls the instrument lamps,
headlamps, marker lamps, parking lamps, tail lamps and interior lamp.
Instrument light intensity can be varied by turning knob clockwise or
counterclockwise. Full counterclockwise position turns on interior
light. An optional headlamp warning buzzer sounds when the ignition
key is placed in either the OFF or LOCK positions (C-K models).
PARKING LIGHTS
MARKER LIGHTS
NOTICE: When the parking lamps or headlamps are to be operated
with the key in the OFF position, the reminder buzzer can be shut off
by turning the light switch knob until the instrument cluster lights are
not on.

Cargo Light Switch

The ON, OFF switch controls the cargo lamp wht;n door is open or
when instrument light switch is turned fully counterclockwise.
Electric Clock
Reset the clock, if your vehicle is so equipped, by pulling out the knob
and turning the hands clockwise if slow, counterclockwise if fast. This
will, if the clock error is five minutes or more, automatically
compensate for time gain or lag. Several resettings, several days apart,
may be needed to properly adjust the clock mechanism.
TURN KNOB TO
VARY INSTRUMENT
LIGHTS-FU LLY
COUNTERCLOCKWISE
FOR DOME LIGHTS
TAIL AN D
INSTRUMENT
LIGHTS
&
2-25