Windshield Wiper; Air Vent & Heater Controls - Oldsmobile 1955 Owner's Manual

The speed be regulated by turning the wind-
shield wiper control clockwise. A push button provided in the center of this
knob controls the windshield washer operation
if
the car is so equipped.
Refer to Accessories section for windshield washer operation.
AIR VENT AND HEATER CONTROLS
On cars not equipped with heater, there is
one control knob at right of steering column
which pulls out to bring fresh air into the
driver's compartment through the new full
width cowl ventilator. For cars equipped with
heater-defroster, the following information
applies:
Knob "E" must be out; knob "D" in. Tem-
perature is controlled by moving knob "S"
in or out. For car heating at low speeds or
city driving, turn fan control switch "A" to
left for low speed blower operation or to the
right for high speed blower operation. See
note at bottom of page 14.
HEATER
DOOR
POSITIONS
Door "F" open or
closed as desired;
door "G" closed.