Abstract: A vehicle door pillar light assembly for illuminating a vehicle door and a method of warning drivers of vehicles, having a vehicle door frame defining an opening for entering and exiting a vehicle, a door hingedly connected to the frame and moveable between open and closed positions, and a device for detecting whether the door is open or closed. The assembly further includes a light mounted within the door frame which is electrically connected to the device for detecting whether the door is open or closed. The light is illuminated when the door is opened and unilluminated when the door is closed. When the light source is positioned on the rear of the door frame, it illuminates the vehicle door and objects disposed between the light source and the, when the door is in the open positions, in order to increase the conspicuity of the opened door.