Circuit Operation

Voltage to the Radio is available at all times through the ORN (1140) wire. This Circuit provides voltage for Radio Station Memory Storage. It also provides voltage for the Clock Memory. With the Ignition Switch in ACC or RUN, Voltage is supplied to the Radio through the RADIO (Fuse 17) and the YEL (43) wire. Each Speaker has its own pair of leads. The Radio/Clock Display brightness is at full intensity with the Ignition Switch in ACC or RUN. Voltage is supplied by the YEL (43) wire. When the Park or Headlamps are turned ON, the Radio senses this signal and switches voltage for the display from the YEL (43) wire to the GRY (8) wire. Full VFD brightness is achieved by turning the first detent on the Headlamp and Panel Dimmer Switch ON where voltage is supplied to the Radio through the PPL/WHT (1382) wire. The display brightness is controlled by the Headlamp and Panel Dimmer Switch. The Radio illumination bulb voltage is supplied by the GRY (8) wire.

The Front Speakers are located in the front doors. The Rear Speakers location depends upon the model. On two-door models, the Rear Speakers are in the rear quarter trim panels. On four-door models the Rear Speakers are mounted in the rear seatback-to-rear window shelf.

The Radio incorporates an electronic memory for preselected station and clock functions. Battery voltage is applied at all times for the Radio clock and memory circuitry through the DOME Fuse. If this voltage source is interrupted for any reason, the clock and memory functions must he reset. With the Ignition Switch in "ACC" or "ON," Battery voltage is applied through the ACC Fuse to the Radio. When the Radio "ON/VOL" control is turned "ON," voltage is applied through the switch to power all electronic Radio functions. The Radio is permanently grounded at G203.