I recently installed handwarmers on a 2000 325 magnum. I picked up power from a wire which was ignition controlled and which a previous owner had tied the winch to. I now suspect it was a headlight wire. On a recent hunting trip my son rode the bike for about twenty minutes before the headlights went dead (very very dim). We shut off the handwarmers which did not help. The brake light continued to work fine which kind of tells me the stator was working. Back in camp I cut the handwarmer power wire and the headlights then worked fine with the bike running, but the battery would not charge up enough to work the starter regardless of how long we ran the bike. The battery is four months old. Suggestions anyone?