Cruise Control - Cadillac 60 Series 1963 Shop Manual

12-70
ELECTRICAL SYSTEM
CRUISE CONTROL
Cruise Control is a driver-operated speed reg-
ulating device that may be used either as a speed
reminder or as an automatic speed control for
any car speed between 25 mph and 85 mph. It is
available as o p t i o n a l equipment on all 1963
Cadillac cars.
The major components of Cruise Control are:
The power unit, mounted under the hood on the
left front fender dust shield; and the selector
control assembly, located on the upper left side
of the instrument panel.
The power unit is driven by a flexible drive
cable from the transmission, Fig. 12-87. The
drive cable also drives the speedometer cable
that runs from the power unit to the speedometer.
The selector control assembly is connected to the
power unit by means of a bowden cable. Mechan-
ical linkage connects the power unit to the ac-
celerator and carburetor throttle rod.
The selector control assembly used on 1963
model 60 and 62 series cars, is shown in Fig.
12-88. Speed settings are secured by use of a
calibrated thumb wheel. The selector dial is
numbered with speed markings from 30 mph to
80 mph, in increments of 5 mph.
Approximate speed settings are obtained by
rotating the selector dial to the desired speed.
For finer calibration after the unit has been
locked in, the selector dial may be moved forward
or backward.
The slide switch for automatic speed control
operation is an integral part of the instrument
Power Unit To
Speedometer Cable
Control Cable
i
Accelerator Linkage
Power Unit
Selector
Control
Power Unit
Wiring Harness
Power Unit To
Transmission Cable
panel and is located to the right of the selector
dial. When the switch is in the "off position,
the unit has no effect at any speed. Once the
switch has been moved to the center or "on"
position, the unit is on and accelerator back pres-
sure will be felt as a warning at the speed the dial
is set for. In the "lock" position, the switch
closes an electrical circuit, provided foot pres-
sure is maintained on the accelerator pedal. Once
the unit is locked in, foot may be removed from
pedal if desired. The switch, which is spring
loaded, will return to the "on" position when
released.
The complete electrical circuit for the Cruise
Control is shown in Fig. 12-89. A reversible
electric motor in the power unit actuates the me-
chanical linkage between the power unit and the
carburetor. Grounding points for forward and re-
verse energizing of the motor are closed and
opened by a governor, under control of a governor
spring that is compressed or relaxed to calibrated
positions, corresponding to selected speeds, by
the bowden cable leading to the selector control.
Speed Reminder Operation
Move the slide switch to "on" position and
rotate the selector dial to the desired speed set-
ting, with speed setting just visible above the edge
of the escutcheon. The Cruise Control will then
function as a speed reminder by exerting back
pressure on the accelerator pedal whenever the
Fig. 12-87 Cruise Control Installation Fig. 12-88 Selector Control Assembly