12 Fuse Wiring Harness

The 12 Fuse Wiring Harness by KEEP IT CLEAN is purpose-built for automotive enthusiasts and professional mechanics undertaking custom vehicle electrical systems, engine swaps, or complete wiring retrofits. This compact harness eliminates the complexity of point-to-point wiring by consolidating 10 circuits and 11 terminals into a single, organized assembly, making it ideal for hot rod builds, restorations, and modern engine conversions where factory harnesses fall short or don't exist. Whether you're upgrading to fuel injection, installing auxiliary lighting, or integrating modern electronics into a classic chassis, this universal harness serves as a clean, efficient backbone for your electrical architecture.

The 12 fuse configuration provides modular circuit protection across multiple power distribution paths, allowing you to independently protect ignition, fuel pump, cooling fans, lighting, and accessory circuits with precision. The ultra-small footprint—measuring just 8.1 x 5.4 x 12.1 inches—fits easily under dashboards or behind kick panels on even the most space-constrained engine bays, a critical advantage over bulky factory harnesses that demand extensive modification. The 10-circuit, 11-terminal design uses industry-standard terminal sizes and fuse ratings, simplifying troubleshooting and maintenance while ensuring compatibility with common automotive relays and switches found in any performance shop or restoration facility.

Mechanics and fabricators benefit most from this harness when working on non-original powertrain swaps—LS engine conversions, carbureted-to-EFI transformations, and vintage truck modernizations—where a clean, repeatable wiring solution cuts labor hours and eliminates diagnostic headaches down the road. Its universal design integrates easily with aftermarket ECUs, ignition modules, and auxiliary systems without requiring custom harness fabrication. Proper installation involves routing the harness away from heat sources, securing terminals with appropriate gauge wire, and testing each fused circuit before final engine startup to guarantee reliable operation under all driving conditions.