If you installed the diode backwards on a Ezgo TXT you need a new pedal box micro switch... It's the one with a roller on the trigger arm $16-20 depending upon where you find it. Do that first. It may be all you need. PS. if you can't see the white band on the diode leave it off until you get it running then ask somebody who can still see (
) to tell you which side of the diode has the the little faded stripe before you put the new one on.