Radio Circuit Description

Voltage to the radio is available at all times through CKT 1140 (ORN). CKT 1140 provides voltage for radio station memory storage and for the clock memory. With the ignition switch in ACC or RUN, voltage is supplied to the radio through the RADIO (Fuse 17) and CKT 43 (YEL). 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. The voltage is supplied by CKT 43 (YEL). When the parklamps or headlamps are turned ON, the radio senses the signal and switches voltage for the display from CKT 43 (YEL) to CKT 8 (GRY). Full VFD is achieved by turning the first detent on the headlamp and the parklamp dimmer switch ON. Voltage is supplied to the radio through CKT 1382 (PPL/WHT). The display brightness is then controlled by the Headlamp and Panel Dimmer switch. The radio illumination bulb voltage is supplied by CKT 8 (GRY).