0acooldad 9 years ago ReplyUpvoteuse and old garage door opener and transmitter. The actual motor circuits in rush would destroy the electronics if you don't also have a control circuit. I.E, a low voltage circuit that brings in a coil that closes a set of contacts that will run your motor. The old garage door will already have all of that built into it's board. (the contact relay will be a black square on the board, usually made by potter brumfield or cutler hammer. The question is are you powering the controls with 110AC? Or are you using DC? Most boards just transform and rectify the 110 anyway, but you'll need to figure out where to tap into the board. If your using 110AC it should be fairly simple.