Fog/Driving Lamp: Description and Operation

Some vehicles are equipped with a rear fog lamp. The lamp unit can be found mounted to the rear bumper assembly. The rear fog lamp unit utilizes a red lens with a clear lamp for brightness, and an illuminated indicator in the instrument cluster.

Rear fog lamp(s) are standard equipment in certain parts of the world where excessive fog is experienced on a regular basis.

Battery positive (B+) voltage is supplied to the left multifunction switch. With the headlamp switch in the on position, battery positive voltage is supplied to the rear fog lamp switch contacts within the multifunction switch. Pulling the headlamp switch knob outward and then rotating the knob one detent counter clockwise will activate the rear fog lamp(s) and illuminate the rear fog lamp indicator in the instrument cluster. The rear fog lamp(s) can only be activated when either the Low Beam or High Beam headlamps are on. Refer to Wiring Diagrams for a complete system schematic.