I have a 2015 Polaris Sportsman 850 that has no electrical function. The battery is 12.6 OCV but when you turn on the switch, nothing happens. I believe that someone tried to jump the battery and had the leads reversed. I'm not very familiar with the machine but the most obvious thing to look for first is a blown fuse. I started looking for fuses and I found a fuse box in the front. I checked the fuses and they were OK but I did not test the circuit breaker yet. Are there more fuses or fuse links located somewhere else on this machine? Thank you, Gil