Fog/Driving Lamp Switch: Description and Operation

The fog lamps consist of:
- Two fog lamp assemblies.
- A fog lamp switch in the console.
- Circuit wiring and circuit protection.

The fog lamp switch:
- Is provided power through Circuit 13 (R/BK) from the LO terminal of the multi-function switch.
- Will only operate the fog lamp when the LO beam headlamps are operating.
- Supplies power through Circuit 275 (Y) to the energizing coil of the fog lamp relay.
- With the fog lamp relay contacts closed, allows power from power distribution box fuse DRL, FOG HORNS, (20A) to flow through Circuit 477 (LB/BK) and the fog lamp relay to circuit 478 (T/O), which feeds the fog lamps.
- Provides power (in the ON position) to the fog lamp indicator light (integral with the fog lamp switch). Ground for the indicator light is provided through Circuit 57 (BK).
- Is provided ground (along with the fog lamp relay and fog lamp) through Circuit 57 (BK).

With the parking lamps or headlamps on, the fog lamp switch illumination bulb is lit.