Fog Lamps
WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
When the fog lamp switch is engaged, the SJB then activates the fog lamp relay, providing power to the fog lamps.
The SJB can only turn the fog lamps on when the ignition switch is in the RUN position, the parking lamps are on and the high beams are off.