I've got one I've been working on until I blew out the imagination cells in my brain. I've been trying to design a motorized antenna mount for the luggage rack on my SUV. The idea is that a vertical antenna (only about 3' long) can be folded against the roof racks so I can park in those pesky low parking garages. I have what seems to be a windshield wiper motor (new and no markings) that has what appears to be some kind of switch which is a a piece of gold plated metal on the main plastic gear and two contacts on the cover. I was hoping to use that as a limit switch since I don't need a full rotation and probably going to gear down the output slightly for just a quarter rotation. The antenna mount would attach to the output shaft so it could go from horizontal to vertical and back. I made a circuit with relays and diodes that would work either direction but would get stuck at the end (not reverse direction). Also, I'd like only two wires going to this mess. The switches ("up" and "down") send power to the motor either polarity so it's independent of the car body (so is the antenna if anybody cares). The idea is to flip a switch (or press and hold a button) the antenna goes up and stops, flip another switch and the antenna goes down and stops. I'm trying to keep it simple, use what's available and the whole thing can be "removable" if need be. It would be so much simpler if there were two switches. sorry I don't have any diagrams to show. It's on the tip of my frontal lobe but I just can't quite get it. Any help kicking my brain in gear would be much appreciated.