Spot Lamps
WARNING: This page is about a different car, the 2015 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
System Diagram
Spot Lamps
When a spot lamp switch is pressed, a ground is provided to the spot lamp module. When the spot lamp module detects that the spot lamp switch has been pressed, it sends voltage to the spot lamp (integrated into the exterior mirror turn lamp) and to the spot lamp switch indicator.
The BCM enables the spot lamps for use when the vehicle speed is less than 6 mph (10 km/h) and the parking lamps are on.