Hi, I am setting up a 3M Graphite with a Hacker B 50S motor for LMR. Does anyone know where you get the parts for a "shorting switch"? Electric parts stores including Radio Shack don't have a clue about what I am looking for. If anyone knows where I can order this it would be a big help since it definitely is a safety concern. I'm told it should be installed on the hot wire and be able to handle 50 amps. Thanks, Reeves in Alaska.