Exterior Lamps

CIRCUIT OPERATION
For Circuit Operation of the Daytime Running Lights (DRL) Module, refer to that component.

Turn Lights
With the Ignition Switch in RUN, BULB TEST, or START, voltage is applied through the TURN B/U Fuse and the Turn Flasher to the normally closed pole of the Hazard Switch in the Turn-Hazard Switch Assembly.

With the Turn Switch in LEFT, voltage is applied to the LH Turn Indicator, LH Front Marker Light, LH Front Turn Light, and LH Rear Stop-Turn Lights. They begin to flash when the current flow heats up the timing element in the Turn Flasher. The flasher repeatedly opens and closes the circuit.

When the Light Switch is in OFF, the LH Front Marker Light is grounded through the Front Park/Turn Lights. These lights provide low resistance paths to ground. The Marker Light will flash with the Turn Lights. Since the voltage drop across the Marker Light is much higher than that across the other lights, the lights used for the ground path will not flash.

When the Light Switch is in PARK or HEAD, voltage is applied through the TAIL Fuse to the Light Switch, Marker, Park, and Tail Lights. If the Turn Switch is in LEFT, the LH Front Marker Light will have voltage applied at both connections and will go off. When the flasher is open, the Marker Lights will be grounded through the Turn Lights and will go on. In this way, the LH Front Marker Light will flash on when the LH Front Park! Turn Light goes off, and off when the Turn Light goes on. With the Turn Switch in RIGHT, circuit operation is similar.

Hazard Lights
Voltage is applied at all times through the STOP HAZ Fuse and the Hazard Flasher to the normally open poles of the Hazard Switch. When the Hazard Switch is ON, voltage is applied to the Front Turn Lights, Turn Indicators, Rear Stop-Turn Lights and the Front Marker Lights. When the Light Switch is OFF, they will flash when the timing element in the Hazard Flasher heats up, opening and closing the circuit.

If the Light Switch is in PARK or HEAD, the Marker Lights flash on when the Hazard Lights are off, and off when the Hazard Lights are on. When the Hazard Switch is ON, the turn circuit is always open, and the Hazard Flasher controls the lights. When the Hazard Switch is ON, the stop light circuit is always open, so the Hazard Flasher continues to flash the lights even when the Brake Pedal is depressed.

Stop Lights
Voltage is applied at all times through the STOP HAZ Fuse to the Brake Switch. When the brake pedal is depressed, voltage is applied to the High Level Stop Light and also to the Stop Lights through the Turn-Hazard Switch Assembly.

If the Hazard Switch is ON, the Stop Lights will continue to flash when the brake is applied. The High Level Stop Light will light steadily, however, since it is fed directly from the Brake Switch.

Tail/Rear Marker/License Lights
Voltage is applied at all times through the TAIL Fuse to the Light Switch. With the Light Switch in PARK or HEAD, voltage is applied to the lights in the circuit