chevy horn wire | eBay www›Search›chevy horn wireFind great deals on eBay for chevy horn wire. Shop with confidence. Skip to main content. eBay Logo: Shop by category. Shop by category. Enter your search keyword Horn Wiring Harness 12V Relay Kit For Car Truck Grille Mount Blast Tone Horns. Brand New · Horn. 4.5 out of 5 stars. Horn wiring 1939 Chevy (early 40's too?) - The Stovebolt Nov 16, 2016How doe sthe horn wiring work for the 39 Chevy truck? There is a wire that exits the lower sterring column, whats it connected to in the column? How does the horn button work, should there be wiring to that. How about the horn relay switch. where do those wires come from? I have alot of blanks in this particular wiring situation on this 39.