Without Daytime Running Lamps (DRL)

HEADLAMPS

Voltage is applied to the Light Switch at all times from Fusible Link M. When the Headlight Switch is turned "ON," voltage is applied to the High and Low Beam Circuits through the Headlamp Dimmer Switch.

At the same time, this voltage is applied to the Headlight Door Motor Assemblies, which allow the doors to open.

When using the High Beams, a voltage is sent to the Central Control Module (CCM), which in turn applies ground to one side of the "High Beam" Indicator bulb, causing the bulb to illuminate.

FOG LAMPS

With the Light Switch in "HEAD" or "PARK," voltage is applied to one side of the Fog Lamp Switch. When the Fog Lamp Switch is closed, voltage is applied to one side of the Fog Lamp Relay Coil, energizing the relay (the other side of the coil is grounded through the High Beam Filament of the Headlamps).

When energized, the normally open contacts of the Fog Lamp Relay close, allowing voltage to be applied to the Fog Lamps.

When the High Beams are activated, ground is removed to one side of the Fog Lamp Relay Coil, de energizing the relay and turning off the Fog Lamps.