I bought a pair of grip heaters from e-bay, and rigged one of them to a scarf...
Wrapped around my neck,.. I can move the heated patch around under my coat to warm chilly areas,.. usually center torso where the jacket tends to pooch and get a slight draft....
Anyway,... $6 for the pair,.. low draw,.. and basically, an electric hot-water bottle...(without the water)...
Plugged in to a fused battery tap between the tank and seat...
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