Abstract: An interior lighting system for an automotive vehicle has an upper group of lights mounted in the vehicle interior, a lower group of lights mounted in the vehicle interior, and a switch mounted in the vehicle interior. The switch is movable between the dome position in which both the upper and lower groups of lights are illuminated, a dim position in which both the upper and lower groups of lights are illuminated between a maximum and a minimum intensity, a floor position in which only the lower lights are illuminated, and an off position in which neither the upper nor the lower group of lights are illuminated. The lower group of lights are illuminated when the switch is in the floor position after a door-ajar condition is sensed and the vehicle is moving at a predetermined velocity. Additionally, when the switch is in the dim position, the upper and lower groups of lights are illuminated only when a door-ajar condition is sensed and the vehicle is moving at a predetermined velocity.