Circuit Operation

Voltage is applied at all times to the Head/Park Lamp Switch through the Headlamp Circuit Breaker. With the Head/Park Lamp Switch in "HEAD," voltage is applied to the Headlamp Dimmer Switch. When the Headlamp/Dimmer Switch is in the "LO" position, the LH and RH Low Beam filaments light. When the Headlamp/Dimmer Switch is in the "HI" position, the LH and RH High Beam filaments light.

Fog Lamps
Voltage is applied to the Head/Park Lamp Switch at all times through I/P Fuse Block Fuse 6C. With the Head/Park Lamp Switch in "PARK" or "HEAD," voltage is applied to the Fog Lamp Switch. Voltage is also applied at all times to the switch of the Fog Lamps Relay through I/P Fuse Block Fuse 6D. With the Fog Lamp Switch in the "ON" position, voltage is applied to the coil of the Fog Lamps Relay. The coil of the Fog Lamps Relay receives ground through the Fog Lamp Disable Relay and the contacts close providing voltage to the LH and RH Fog Lamps.

When the High Beams are on, the coil of the Fog Lamp Disable Relay is energized and its contacts close interrupting the ground path of the Fog Lamps Relay. The Fog Lamps then go out.