Courtesy Lamp: Description and Operation

Battery voltage is applied at all times to fuse C-16 and to the dome, map, courtesy, and luggage room lights.

Courtesy Lights
With a front door open, a ground path is provided by the closed front door switch and the front courtesy lights go on. With a rear door open, a ground path is provided by the closed rear door switch and the rear courtesy lights go on. Opening a front door does not turn on the rear courtesy lights and opening a rear door does not turn on the front courtesy lights.