Vanity Lamp: Description and Operation

When the vanity mirror cover on the sunshade is opened, the vanity lamp illuminates. The vanity lamp can be dimmed through sliding switch next to the mirror. The BCM energizes the Inadvertent Power relay which provides battery positive voltage to the vanity mirror lamps. When the vanity mirror cover on the sunshade is opened, its switch closes to provide a ground to G401. The vanity mirror lamp may be dimmed by the sliding switch next to the mirror. The switch is a potentiometer in which the resistance varies as the switch is moved. As the resistance of the potentiometer increases, the vanity lamp receives less voltage. The vanity lamp then becomes dimmer.