Courtesy Lamps
WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
The courtesy lamp subsystem consists of the interior dome lamps, the instrument panel dimmer switch, the overhead console lamps, the cargo lamp, and the puddle lamps (if equipped). The SJB supplies voltage to the courtesy lamps when the SJB receives the required input.