Up for sale is an upgraded factory original GM Front Headlight Wiring Harness, specifically removed from and configured for a 1981–1987 generation "Squarebody" Chevrolet / GMC truck with the Single Headlight (two-light setup) front clip.
The Ultimate Lighting Upgrade: This harness has been professionally updated with an integrated heavy-duty headlight relay system. Factory 1980s GM wiring routes all of the headlight power directly through the dashboard switch, causing a massive voltage drop that results in dim, yellowed headlights and overheated switches. This relay modification bypasses the dash switch for power, pulling crisp, full voltage straight from the battery source to your lamps. You will notice an immediate, drastic increase in nighttime visibility and headlight brightness, all while protecting your interior dash switch from burning out.
Condition Details: This original GM copper core harness is in excellent functional condition. The wires are pliable, the factory loom/wrapping is clean, and it has been upgraded with high-quality weather-resistant relays. All factory headlight sockets and bulkheads are intact and ready to plug right into your project truck.
Vehicle Fitment:
1981–1987 Chevrolet & GMC C10, C20, C30, K10, K20, K30 Pickups (With Single Headlights)
1981–1991 Chevrolet K5 Blazer & GMC Jimmy (With Single Headlights)
1981–1991 Chevrolet & GMC Suburban (With Single Headlights)
Shipping & Handling: We ship all items securely packed and coiled safely to prevent wire binding or connector damage during transit. We pack and ship out daily from our warehouse to keep your truck build moving forward, providing premier service routes directly to major automotive restoration hubs across California and Florida. Local pickup is also welcome.
