The trickiest part in mounting the taillight housing was locating the precise spot to drill the blind mounting holes for the motor plate. Brett cut the heads off two bolts, screwed them into the motor plate, leaving about 1/4-inch exposed, and sprayed paint through a piece of 5/8-inch tube onto the exposed ends. Then he put the taillight housing in place and planted it firmly on the motor plate. That left two paint spots on the taillight housing indicating where he needed to drill the mounting holes.