A compact lamp assembly provides illumination for a vehicle interior, and generally includes a housing, a circuit board, and an LED that emits light through an opening in the housing. The front wall of the housing includes first and second installation features for installing the lamp assembly in a slot in a vehicle interior panel. The first installation feature has a flange connected to the housing by a neck portion that encircles the opening in the housing and that is designed to slide into the slot so that the housing is held in place on the panel by the flange. The second installation feature includes a pair of apertured extensions of the front wall that receive fasteners to hold the lamp assembly in place against the rear side of the panel.