I agree it is probably a short somewhere. Start checking every wire. I do this on all my sleds. I will put the plastic wire loom on anything that can rub. While your at it check the hoses. They also rub on things. Look at the one that goes under the motor thru the frame near the exhaust. That one is prone to damage. Fuel and oil filters can rub also and need to be checked or changed while your at it.