Here is my idea for a heated clothing controller. I wanted something with convenient, easy to reach knobs, with no permanent mods to the bike. It also needs to be easy to remove when not in use.
For this project I used a small Hammond die cast aluminum project box, and a small electronic control board that I designed, which uses an AVR microcontroller. I mounted the control board to the lid of the box, and mounted the potentiometers to the bottom of the box. I screwed a Ram-mount 1" ball to the lid also, and this allows a solid but adjustable position on the bike, between the handlebars. Coaxial power jacks are mounted on the front wall of the box, allowing quick connections for both gloves and jacket.
Power comes from a jack mounted in the handlebar riser, which is fed from the accessory circuit. I changed the accessory fuse to 10A, after inspecting the wiring and confirming it was appropriately sized. I plan to eventually move the power feed to a dedicated circuit from the power distribution block under the seat.
The controller works great. The only thing I wish it had but doesn't is lighted control knobs. But, in truth, I don't ride that much when it is both cold and dark, so that should not be that much of an issue.
If anyone is feeling adventurous and wants to build one of these, PM me. I will be happy to share the code and maybe even a bare circuit board.
RedRambler