HORN, Horn Wiring Diagram for GMC C3500 HD 1994, List of elements for Horn Wiring Diagram for GMC C3500 HD 1994:, (on sheet metal, , (right inner, Convenience center (under left side of i/p), Fuse block, G100 above left headlamp), G101 fender, near battery), Horn relay, Horn switch, Hot at all times, Left horn (at front of vehicle), Park lps fuse 20a, Right horn (at front of vehicle), Steering wheel, W/v22 only, , , ANTI-LOCK BRAKES, COMPUTER DATA LINES, ENGINE PERFORMANCE, DEFOGGERS, CRUISE CONTROL, EXTERIOR LIGHTS, GROUND DISTRIBUTION, HORN, POWER SEATS, POWER MIRRORS, POWER DOOR LOCKS, HEADLIGHTS, INTERIOR LIGHTS, INSTRUMENT CLUSTER, POWER DISTRIBUTION, RADIO, POWER WINDOWS, TRANSMISSION, WARNING SYSTEMS, STARTING/CHARGING, WIPER/WASHER, ,