I just got a 95 Arctic Cat Prowler and I don't think the hand warmers are working properly. They are the kind that have the coil inside the handlbars. I ran the snowmobile for about 10 minutes and the thumb warmer was toasty but the grips seemed to be quit a bit cooler. I checked for current going to the handwarmers and it read about 2 volts DC on the meter. The switch seemed to work properly also. The switch is either in the Thumb / Off / Hand & Thumbwarmer position. It would shut the 2 volts off when the switch was activated to the off position or the thumb position. Everything is stock on this sled and it only has 1200 miles. I would find it hard to believe that both grips burned out. I could be wrong though. Is there anything else I can do to try and troubleshoot this problem??????????