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It can be. I installed an auxiliary fuse block under the seat and a permanent plug in wire. Just hook up the SAE connector and I am warm to below freezing.

Excellent, I am in Ireland so it can get a bit chilly here. Nothing too bad mind you but chilly on a bike. Thanks for replying too.

I spent years laughing at guys that wore electrics. No more. I would frankly put myself in danger by riding to the point of shivering. Shivering inputs your steering and makes you not as good a rider as you are when warm.