AM/FM Stereo

Radio Control Knob/LCD Display Illumination

The Main Light Switch dimming rheostat controls the brightness of the Radio control knob illumination bulbs and the LCD time/frequency display.

Radio Memory and Operating Power

Voltage is present at connector C257, pin 1, of the Radio at all times through Fuse 5 and circuit 937 (R/W) and 797 (LG/P). This constant power to the Radio maintains clock and station preset memory functions.

With the Ignition Switch in ACC or RUN, voltage is also present at connector C257, pin 3 of the Radio, through Fuse 16 and circuit 137 (Y/BK). When the Radio is turned on, current flows through circuit 137 (Y/BK) and the Radio circuits to ground. The Radio turns ON.

AM/FM Stereo

In the base AM/FM Stereo system, the Radio's internal amplifier powers all four speakers.