I'm not completely dumb when comes to circuits but I'm pretty confused on this one. Had a problem with boat starting and running fine but wouldn't turn off. Found where the battery lead terminal on starter had rubbed and grounded to the lower post with the single purple wire. I repaired that short connection and now boat won't start and stay running, coil has no constant power on - or + when key switch is on. Engine start position on key switch sends 12 volts to coil when turning over which causes but to start but then cut off once you let go of the key. Have replaced every 12v relay on boat and checked every connection. Just to check my dumminess I made a gator clip jumper and jumped back between hot lead and purple wire on starter and started and ran great. What am I missing? This is in a 1998 regal 2100 lsr