I’ve two Gerbing heated jackets, one must be nearly 20 years old, the other one about 5 years old ( given to me for free) both work perfectly.
Powered off the bike, and an inline heat controller, heat adjusted with a knob, mega hot one end, off/luke warm at the other end.
The Gerbing heated trousers/glovrs:boot indoors all plug into each other so only the one power lead from the bike is needed.
I had a Keis heated waistcoat but didn’t think much of it.
Years ago I also made my own heated trousers and fleece top, there used to be a supplier called “Heat for You” which sold all the necessary heated wiring and connections etc..
Here’s a picture of me in France, 19 years ago, December 29th, riding in minus 6 temperature, frost covered trees, and ice forming around the edges of my screen, picture was used in an advert for the heated clothing
And in northern Spain, 4am in the morning, thick ice everywhere.
But I was warm, didn’t even have the heat at the highest setting


