Daytime Running Lamps (Domestic, Gulf States,Canada)

The Daytime Running Lamps (DRL) module is designed to automatically operate the front park/turn lamps through the park lamp feed circuit and the low beam headlamps through the headlamp switch output circuit, depending on the outside light conditions. The DRL control module operates in 2 modes:
^ The day mode allows the two front turn signal lamps to be on and non-flashing.
^ The night mode allows the following components to be on:
- Low beam headlamps
- Front side marker lamps
- Park/turn lamps
- Tail lamps
- License lamps
- Tail/stop/turn lamps
- Tail/stop lamps (Chevrolet)

The DRL module operates in the night mode when the DRL ambient light sensor senses darkness. When this happens, the night mode contacts close, and voltage is applied to the headlamps and the exterior lights through the same circuit path as when the headlamp switch is in the HEAD position.

The DRL module turns off the headlamps when the engine stalls with the DRL in the night mode. The side marker lamps, the park/turn lamps and the tail lamps are on while the engine is cranking. The headlamp switch operates as usual.