If I press the horn all the lights go dim and the horn doesn't work, anyone know what it may be? Does someone have a wiring diagram? Any help is appreciated.

Thanks

 

when I had that problem, either it could be a loose wire connecting to your horn or the horn could be messed up in general. Another reason my horn didn't work, when I got my radiator painted, they clear coated it too much that I had no ground to the horn. Other than that, good luck on finding your problem

 

check the fuse yet? is your srs light on?