The Daytime Running Lamp (DRL) operates automatically with the ignition switch in the following positions:

The DRL also operates automatically under the following conditions:

Operation of the DRL reduces the intensity of normal high beam operation.

Voltage is applied through the gauges fuse 4 to the DRL module and to the coil (power side) of the DRL relay when the ignition switch is in the following position:

If the parking brake is disengaged and the headlamp and panel dimmer switch is off, then the DRL module supplies ground to the coil (ground side) of the DRL relay. With power and ground applied to the coil of the DRL relay, the coil energizes the contacts to close. Voltage is applied through the DRL fuse 15 and the closed contacts of the DRL relay to the left and right low beam headlamps. When the DRL is operating, the DRL module supplies ground to the DRL indicator.

Voltage is applied through the gauges fuse 4 to the DRL indicator with the ignition switch in the following positions:

With power and ground applied to the DRL indicator, the DRL indicator illuminates.

When the parking brake is engaged, the DRL module senses a ground signal. When the DRL module receives the ground signal, the DRL operation is disabled. DRL operation is disabled by removing the ground from the coil of the DRL relay.

The DRL module disables the DRL operation under the following conditions: