For 1990-2009 cars

## Twilight Sentinel Circuit Description Buick

The twilight sentinel keeps the lamps on for a delay period (3-180 seconds) under the following conditions:

• | The vehicle is in the PARK position.

• | The ambient light sensor indicates darkness.

• | The ignition switch is turned to the OFF position.

You may turn OFF the twilight sentinel manually. The twilight sentinel always has a minimum delay under the following conditions:

• | The vehicle is in the PARK position.

• | The ambient light sensor indicates darkness.

• | The ignition switch is turned to the OFF position.

• | The switch is released.

The twilight sentinel feature does not affect the operation of the daytime running lamps (DRL).

## Twilight Sentinel Circuit Description Oldsmobile/Pontiac

The twilight sentinel keeps the lamps on for a delay period (3-130 seconds) under the following conditions:

• | The twilight switch is in the ON position.

• | The vehicle is in PARK.

• | The ambient light sensor indicates darkness.

• | The ignition switch is turned to the OFF position.

The twilight sentinel feature does not affect the operation of the daytime running lights (DRL).