Attention: TDR Forum Junkies I opened my new issue of TDR yesterday and breezed through the Genos book. I saw the shift knob button for an exhaust brake,cool Idea. I have a Pac Brake in mine with the nice green flip button and I like it,so how about other uses for that knob button. I was wondering if it will work on an airhorn relay??? 
been thinking of a spot to install a button and that is perfect.
been thinking of a spot to install a button and that is perfect.
