Re: merc motor won't shut down
skippy do you have a manual for your motor and does it have the wiring harness diagram? you have either the wrong harness or a wrong/bad key switch. Also could be an open in the ground wire from key switch to ground, not stopping the motor. You also need to incorporate a safety switch in your wiring system. I dont have my book with me , but the wire that comes off the distributer/magneto grounds out the spark stopping the motor. Check the wiring from this wire back to your switch.