And here's one I made....I went to Radio Shack and bought the 276-1143 diode {which was rated at 3 amps}...Came in a 2 pack for a few bucks.. ...Dug out an old connector and wired/soldered the diode in place...Take note which way the diode band needs to face to block the backfeed current...The paper is a reference for the diode placement and direction{from the FSM}... ... And lastely the finished product gets wrapped with some cloth tape and I made up a tag for ID... Total cost less than 5 bucks !!!! ....