700

My 2000 RMK 700 won't shut off. The black wire by the stator is plugged in. Neither the kill switch or key will shut it off. Any help is appreciated!

I have 4 2000’nd Ski-Doo Summit 700’s all have under 3k miles such awesome sleds only one gives me a issue after warm and you want sudden speed and slam the throttle it will bog down for a second then slowly pick up but ‘ if you immediately let off and try again presto no problem thinking...