Domestic

The daytime running lamps (DRL) module is designed to automatically turn on the low beam headlamps and the front park/turn lamps when the ignition switch is in the RUN position, the headlamps are off, and the park brake is off. There is no ambient light sensor. It is replaced by a jumper.

The DRL module will not operate any headlamps or exterior lamps if the park brake is applied before the ignition switch is turned to the RUN position. This allows the driver to start the vehicle and keep the headlamps off, as long as the park brake is applied. The DRL module activates the headlamps when the park brake is released with the ignition switch in the RUN position. The headlamps will not turn off if the park brake is applied after the ignition switch is turned to the RUN position.

When the headlamp switch is turned to the PARK or HEAD position, the DRL module turns the front park/turn lamps off. When the headlamp switch is turned to the HEAD position, battery voltage is applied to the low beam headlamps. Battery voltage is also applied to the headlamp dimmer switch. When the headlamp dimmer switch is turned to high beam, voltage is now applied to both high beam headlamps The low beam headlamps stay on when the headlamp dimmer switch is in the high beam position. When the headlamp dimmer switch is in the high beam position, the instrument cluster high beam indicator turns on.