Exterior Lamps

PARK, MARKER, TAIL AND LICENSE LAMPS
Voltage is applied at all times through the Tail Fuse to the Headlamp Switch and, if equipped, to the Daytime Running Lamps (DRL), Module through CKT 240. With the Headlamp Switch in "PARK" or "HEAD" or with low light conditions if DRL equipped, voltage is applied to CKT 9. Current flows through CKT 9, to all Park, Marker, Tail and License Lamps turning them "ON." The only lamps that see a current from CKT 9 and do not turn "ON" are the turn filaments in the Park/Turn Lamps. They do not turn "ON" because the voltage drop across the Front Side Marker Lamps is much higher than that across the Turn Lamp Filaments.


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

With the Turn Switch in the "TURN LEFT" position, voltage is applied from the Turn Switch to CKT 14 through terminal "H" of the Turn/Hazard Switch Connector C206 and to CKT 18 through terminal "M" of C206. LH Front Turn, Rear Turn and Indicator Lamps flash "ON" and "OFF" as current flow heats up the timing element in the Turn Flasher, and it continuously opens and closes the circuit (for RH Turn Lamps CKT 15 terminal "J" C206 and CKT 19 terminal "N" of C206).

With Park Lamps "ON" and Turn Lamps "ON," voltage is applied to both terminals of the Front Marker Lamp causing it to be "OFF." When the Turn Lamps are "OFF," voltage is applied to only one terminal of the Marker Lamp causing it to flash "ON." The Marker and Park/Turn Lamps continue to flash "ON" and "OFF" alternately until Turn Switch is turned "OFF."

HAZARD LAMPS
Voltage is applied at all times through the STOP-HAZ Fuse and the Hazard Flasher to the normally open poles of the Hazard Switch in the Turn/Hazard Switch Assembly. With the Hazard Switch in "HAZARD," voltage is applied to the Stop-Turn Lamps. All of the Stop-Turn Lamps and both Turn Indicators flash "ON" and "OFF."


STOPLAMPS
Voltage is applied at all times through the STOP-HAZARD Fuse to the Stoplamp Switch. When the brake pedal is depressed, voltage is applied through the Stoplamp Switch and Turn/Hazard Switch to CKT 18 and CKT 19, turning "ON" the LH and RH Tail/Stop/Turn Lamps.


DAYTIME RUNNING LAMPS (DRL) MODULE
The DRL Module has voltage applied at all times through CKT 240, voltage applied in "RUN," "BULB TEST" or "START" through CKT 39, and voltage applied in "RUN" through CKT 350. The DRL Module uses inputs from the DRL Sensor, through CKTs 1137 and 1138, and the Park Brake Switch through CKT 1134 to control the Park Lamp Relay. With a low light condition, Ignition Switch in "RUN" and Park Brake released, the DRL Module energizes the Park Relay turning "ON" the Park Lamps (as described in Park, Marker, Tail and License Lamps).

If the Ignition Switch is turned to "RUN" after the Park Brake is set, the DRL Module will not turn on the Park Lamps until the Park Brake is released. The DRL Module will turn off the Park Lamps whenever the DRL Sensor detects a daylight condition.