Abstract: A device for guiding a tool to create a hole in a door panel. In one aspect, the invention can be an apparatus for guiding a tool to create a hole having a predetermined shape and size in a door panel, the apparatus comprising: an elongate member extending from a first end to a second end along a longitudinal axis, a bracket at the first end of the elongate member for engaging a top edge of the door panel; a template comprising a template section and a mounting section, the template section comprising a central opening defined by an inner edge, the central opening having the predetermined shape and size, the mounting section slidably mounted to the elongate member so that the template can be slid along the longitudinal axis of the elongate member; and a locking means for securing a position of the template on the elongate member.