Brighten your night drives and protect your electrical system with this 1981-87 Square Body Chevy & GMC Truck Heavy Duty Headlight Harness, Dual Headlight. The original factory wiring on these classic trucks can’t handle the demands of today’s high output halogen or xenon H4 headlights, leading to dim, flickering, or malfunctioning lights. This easy plug-and-play upgrade solves those issues while preserving your truck’s stock look.
Designed with OE style plugs for both high and low beams, this harness includes high heat ceramic headlight sockets, heavy-duty relays, and quality wiring for maximum durability. By pulling power directly from the battery instead of through the factory headlight switch, it prevents overloads, overheating plugs, and premature switch failure, while still using your original switch to control the lights.
Perfect for trucks with upgraded 7"x6" halogen or xenon bulbs.
Key Benefits & Fixes:
- Fits 1981 to 1987 Chevrolet and GMC Trucks, K5 Blazers, Jimmys, and Suburbans
- Setup is for 2 headlights on the driver side and 2 headlights on the passenger side.
- Restores full brightness to dim headlights
- Eliminates flickering and back feeding power issues
- Prevents headlight malfunctions when switching between high/low beams
- Stops headlight switch overloads and overheating plugs
- Direct battery power delivery for maximum performance
- Ceramic plugs resist heat and won’t melt like standard plastic plugs
- OE-style connectors for easy, factory-like installation
- Works with H4/9003 12V bulbs
Kit Includes:
- Heavy duty wiring harness
- High heat ceramic headlight sockets (H4/9003)
- Dual relays for reliable power delivery
- Factory style high and low beam connectors
Upgrade your 1981–87 Chevy or GMC C/K Series truck’s lighting performance and safety in one simple install. Get brighter, more reliable headlights and say goodbye to dim or flickering lights for good. We suggest to check out our 1981-87 Square Body Chevy & GMC Truck Custom Clear Dual Headlight, Upper and 1981-87 Square Body Chevy & GMC Truck Custom Clear Dual Headlight, Lower
