Agree with gemsworld with one small caveat. The baseplate for a 2003 Ford Explorer may be the same as a Mercury Mountaineer as it is realistically the same vehicle. BUT it may not be depending on the manufacturer of the baseplate. When I bought the baseplate for my Explorer I wanted one that was as hidden as possible. The Demco version had the connection points come through the facia area in place of where the fog lights would have been. Other manufacturers had the connection point below the facia.