Car Door projector light lamps, car door light, powered by 3pcs AAA batteries (Batteries Not Included) Door light is especially designed for car fancier modification and it will not destroy the original car appearance, bring more driving fun to drivers. The shiny led light car door projector light and the signal light will display on the ground when you open the car door and it will be turn off when you close the door. It can be installed in both left and right door, courtesy door light, and make your car artistic moreover the atmosphere. Easy to instal. No need drill hole. Just stick the light lamp on the door panel and stick the magnet on the bottom of the car frame. The ground can illuminate the welcome light. No harm to car