I did that with a Gerbings. I installed a Powerlet socket and wired it through a Heatroller. If I need full power, like for the air compressor, I turn it to full and get constant power. If I need less than full power, like when I want just so much heat for my Gerbings, I just dial in the level of heat I want. I installed the Heatroller under that little triangle of black plastic that juts out left of the right fairing pocket. I drilled one hole for the knob, another to let the red LED come up so I can see the level of toast dialed in.