Cadillac 1967 VVI Data Book page 174

With this system, comfort is automatically maintained to the
individual requirements of the front and rear compartment
passengers regardless of whether the division glass (on cars so
equipped) is up or down, and despite car speed and variations
in outside temperature.
Rear comparment radio controls
Rear seat radio controls are optional at extra cost on Fleetwood
Seventy-Five cars equipped with a signal seeking selector AM
radio. The controls, consisting of an on-ofF volume control, a
sensitivity control and a station selector button, are located
underneath a lunged cover in the right rear armrest just for-
ward of the air conditioning controls.
The on-oif volume control knob turns the radio on and off or
transfers control to the rear seat, if the radio is already on, and
45
STATION SENSITIVITY
1
"' ON-OFF
, SELECTOR CONTROL VOLUME
regulates the volume. When the radio is being operated by
remote control, the station selector button glows red. To select
stations, momentarily depress the station selector button until
the desired program is received. The sensitivity control is
below the on-ofF knob. Rotating it counterclockwise will per-
mit the tuner to stop only on the more powerful stations. In
the middle position, stations of slightly lower power will also
be received. For maximum sensitivity, rotate the control
clockwise to bring in the weaker stations.
With the rear seat radio controls on, the driver may turn his
speaker on or off with the ring behind the right control knob,
and tune the radio manually or with the push buttons. The
radio cannot be operated normally from the front seat again
until the rear controls are turned off.