Fixed the horn today, wires are good. it had more to do with beer chili dogs and candy bars over the years.soaked it with fantastic let it sit for a few days cleaned up nice .the horn contact under the the plate was gummed up solid. dad loved junk food. Oh by the way advance design trucks all had beer bottle openers put in by the factory located at the door lock in the cab, dad showed me how and it did work .