'08 Nytro/Impulse Turbo/174 ez ride. Was riding in -10 F and sled quit-blew IGN fuse (20a) -couldn't find anything wrong, put in back up and blew it. Played with wiring/relays, used jumper and blew 40a main fuse. Next day swaped out starter relay+diode and 40a fuse. Blew another IGN fuse. Towed it out, thawed it out in garage, now it works. What could freeze and become a dead short? Don't want it to happen again. Suggestions?