I third the request, I'm sure I could use it also. Thanks PMI. As I sit here staring at the wiring diagram, I see that the gray wire appears to get its power from somewhere else, namely the bottom left fuse (small one)... which in turn gets it's adjusted power from turning the headlight switch. I think I will try applying power directly to the fuse to test it's getting power from the headlight rheostat. If anyone has any other ideas, let me know. I have jiggled the headlight rheostat many times and nothing happens.