For 1990-2009 cars

The DRL module controls all the exterior lights according to the following conditions:

• | Ambient light

• | Light switch position

• | Engine status

• | Parking brake condition

The twilight sentinel operation is similar to the DRL operation. If the DRL module senses a low light condition for approximately 15 seconds, it will cancel DRL operation and turn on the headlamps at full intensity along with the parking lamps. A path to ground is provided to the coil of the DRL relay. With a direct path to ground provided to the headlamps through the closed contacts of the DRL relay and SP254 to G103. The headlamps will light at full intensity.