I brought my truck in for service about 5 weeks ago and told them my horn would honk when the wheel was tilted non stop. they said a wire was grounding out and the fixed it. $88. 00 later. now for the last few day the thing don't work at all. I really dont want to go back to the dealer to get charged again. does any one know how to repair this or replace,maybe wire diagrams. thanks louie...