Antenna: Description and Operation

With the Ignition Switch in ACC or RUN, voltage is applied through the RADIO Fuse and the 137 (Y/BK) wires to operate the Radio.

The MEMORY Fuse applies voltage to the Radio at all times through the 797 (LG/P) wires to power the memory-relayed functions, which retain the memory portions with the Radio and Ignition turned off.

Panel dimming is controlled by the instrument panel dimming switch. A variable voltage is applied through the 19 (LB/R) wire to control the panel lamps' brightness.

The display's brightness is controlled by the Main Light Switch. When the park lamps are turned on, battery voltage is applied to the Radio through the 484 (O/BK) wire, and the display dims. When the park lamps are turned off, voltage is no longer applied to the Radio, and the display brightens.

JBL/Premium Sound

The Premium Sound System features a Radio with a cassette deck and an Amplifier. The JBL sound system features a Radio with a cassette deck and a four-channel amplifier, an optional CD Player, and a Subwoofer Amplifier and Speaker.

Voltage is applied to the Amplifier through the 37 (Y) wire. The Amplifier is grounded through the Radio and 694 (R) wire. The Radio provides an audio signal for each channel through the 277 (LB/PK), 278 (P/W), 279 (W/R) and 280 (LG) wires. The Amplifier processes the audio signal provided by the Radio and supplies the audio output to each Speaker.

The Radio Fuse applies voltage to the Antenna Switch through the 137 (Y/BK) wires when the Ignition Switch is in ACC or RUN. Moving the Antenna Switch to UP applies power to the 745 (R/PK) terminal of the Power Antenna and ground to the 746 (DG/Y) terminal. With the Antenna Switch in the DOWN position, the 745 (R/PK) wire is grounded and the 746 (DG/Y) wire is powered. In either case, the motor runs in the appropriate direction.