Had the same problem. I think your problem started by using the winch, when you use a winch voltage drops and current goes up, this damaged your electronics some how. There is nothing wrong with jumping a bike off with a truck. My issues started after the first time i used my winch. I did everything you did above. Not for sure what fixed my issue, but i stopped doing it, i tore my bike apart checking everything. I pulled the starter contactor off of my rzr and still didnt fix the issue. Your starter is not pulling in, you will have to use a electrical diagram and check back to the starter relay to see if power is getting to and across the relay. Did you have voltage across the circuit breaker you found?
I have read several other threads on here with guys with the same issue. Seems like it starts after using the winch.
I have read several other threads on here with guys with the same issue. Seems like it starts after using the winch.