I had my 6.6 Duramaxx overhauled and the “mechanic” has completely screwed up my truck. So my major problem now is the horn has stopped working. I’ve checked all fuses, relay, power to horns, replaced horns, cleaned connection between the horn contact, even soldered the end to ensure good connection. The best I can figure is the ground going to the steering wheel is bad. I read on one of these forums that someone used a 12ga wire and ran a new ground to the steering wheel. Does anyone have any suggestions on the best and quickest way to determine if this will work and how to run it?