Highway 15 Plus Wiring Kit

The Highway 15 Plus Wiring Kit is a complete automotive electrical harness system designed for custom vehicle builds, restoration projects, and aftermarket installations. This universal wiring solution serves mechanics, fabricators, and automotive enthusiasts who need reliable power distribution across multiple circuits without relying on factory wiring configurations. Whether you're retrofitting a classic car, upgrading electrical capacity for auxiliary systems, or simplifying a modern vehicle's wiring architecture, this comprehensive kit eliminates the guesswork of point-to-point electrical work.

Built to General Motors industry color coding standards, the Highway 15 Plus harness follows widely recognized conventions that ensure compatibility with aftermarket components, gauges, and electrical accessories commonly found in the custom automotive market. The kit provides 15 dedicated power outlets, allowing simultaneous operation of fuel pumps, ignition systems, lights, fans, and auxiliary electronics without circuit overload or voltage drop. The complete pre-assembled design minimizes installation time compared to hand-fabricated looms, reducing labor costs while maintaining professional-grade construction. At 14.3 lbs and measuring 12.85 x 5.3 x 15.55 inches, the harness ships compactly yet contains sufficient gauge variety and length to handle most vehicle platforms.

This kit benefits restoration specialists modernizing aging electrical systems, off-road builders integrating winches and auxiliary lighting, and street rod fabricators who require clean, organized power distribution. Universal design means it adapts across import and domestic platforms when properly integrated with vehicle-specific relay modules and fuse blocks. Professional installers appreciate the standardized GM color coding—red for power, black for ground, and secondary colors for circuit-specific functions—which accelerates troubleshooting and future modifications. Installation requires basic electrical knowledge, proper crimping tools, and attention to grounding points; consult a qualified technician if unfamiliar with automotive electrical systems. The Highway 15 Plus transforms complex custom wiring projects into manageable, repeatable installations for both single vehicles and fleet applications.