Demand Lighting
WARNING: This page is about a different car, the 2003 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
The GEM does not provide any special features to the demand lighting group with the exception of providing a power source when the battery saver feature is active. The demand lighting group consists of the luggage compartment lamp, the driver and passenger vanity mirror lamps, and the map lamps.