Headlamps With Daytime Running Lamps (DRL)

CIRCUIT OPERATION - HEADLAMPS
Voltage is supplied to the Light Switch at all times. The light Switch includes a Self-Resetting Circuit Breaker. The Circuit Breaker opens when the Headlight circuit draws too much current. When the Circuit Breaker opens, it interrupts the current flow. With no current flow,the Circuit Breaker cools off and resets automatically. When the Light Switch is in HEAD, the Headlamp Dimmer Switch directs voltage to either the Low Beams or High Beams. The High Beam Indicator also receives voltage along with the High Beams.


CIRCUIT OPERATION - DAYTIME RUNNING LAMPS (CANADIAN ONLY)
Voltage is supplied to the Daytime Running Lamp (DRL) Relay Switch at all times through the RED (340) wire from the DRL Fuse ad when the Ignition Switch is in RUN through the PNK/BLK (39) wire from the GAGES Fuse. The DRL Relay Switch provides voltage to the LH High Beam through the DK BLU/WHT (593) wire and this wire also becomes the ground wire when the Headlamps are operating normally.


Voltage is supplied to the DRL Module when the Ignition Switch is in RUN through the BRN (50) wire from the AC/HTR Fuse. When the Ignition Switch is placed in RUN, the voltage from the DRL Relay Switch is provided a ground path through the LT GRN wire through the DRL Module. This enables the DRL Relay Switch to provide voltage to the High Beam Lamps from the DRL Relay Switch and places the High Beam Lamps in series.


The DRL Module will not enable the DRL Relay Switch if the Light Switch is in the ON position or the Park Brake Switch is ON.


The High Beam Indicator also receives voltage from he DRL Module when the Headlamp Dimmer Switch is in the High position.