Abstract: An apparatus for reminding a driver to turn off automobile headlights before locking the automobile door, comprises a sheath member defining an enclosure for concealing an interior automobile door lock actuating post and removably mountable thereover. A cooperating bracket member is mounted to the sheath member and movable relative thereto for engaging an automobile window slot adjacent to the door lock actuating post. Cooperatively, the bracket acts to maintain the sheath member in position so as to conceal the door lock actuating post. Consequently, the apparatus must be physically removed from the door locking post by the driver in order to actuate the post to its locking position, thereby reminding the driver to turn off the automobile headlights before locking the door.