Installed new switch on handgrip heaters and a new heating element on thumb throttle after riding and freezing my hands for a season. Trouble-shot the problem through info on this forum regarding correct resistence etc using my multi meter. Got one short ride with heaters working, then they quit and the headlights and tail lamp quit (they just glimmer now and go out altogether if I switch on the hand grip heaters or the thumb warmer) Thought it might be the battery ( 4 years old) so installed new one. The starter rolls very fast so battery good and connections good. Anybody have a suggestion what to check for?