{"product_id":"jy-performance-universal-21-circuit-wiring-harness-kit-17-blade-fuses-labeled-color-coded-loom-for-classic-cars-swaps","title":"JY PERFORMANCE Universal 21-Circuit Wiring Harness Kit — 17 Blade Fuses, Labeled Color-Coded Loom for Classic Cars \u0026 Swaps","description":"\u003cp\u003e\u003cstrong\u003eJY PERFORMANCE's Universal 21-Circuit Wiring Harness Kit with 17 fuses is a complete, labeled wiring solution engineered to replace or build automotive electrical systems for classic cars, hotrods, and swaps.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis universal harness consolidates 21 circuits into a single organized loom and includes 17 blade fuses, clearly marked wires and pre-terminated connectors to speed installation and reduce troubleshooting. Designed for compatibility across a wide range of American makes and custom projects, the harness uses high-conductivity copper-core conductors and corrosion-resistant materials to deliver dependable connections in restoration, custom build, and repair work.\u003c\/p\u003e\n\n\u003ch3\u003eWhat circuits are included and how will they cover my vehicle's needs?\u003c\/h3\u003e\n\u003cp\u003eThe kit covers the most common automotive circuits required for a complete streetable vehicle or show car. It includes lighting, ignition, accessories, and convenience circuits so you can wire everything from headlights to power windows without sourcing separate looms.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e21 circuit coverage: horn, fan, dome, hazard, radio, cigarette lighter, door locks, brake, headlights\u003c\/li\u003e\n  \u003cli\u003eAlso includes: trunk light, gauges, backup lights, cruise control, wipers, choke, coil, A\/C, electric fuel pump, power windows, turn signals\u003c\/li\u003e\n  \u003cli\u003e17 blade fuses protect grouped circuits and simplify troubleshooting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the harness simplify installation and maintenance?\u003c\/h3\u003e\n\u003cp\u003eEach wire is color-coded and labeled at regular intervals for quick identification during routing and connections. Pre-labeled leads reduce guesswork, and the included fuse block centralizes circuit protection so you can replace fuses or trace faults without tracing individual wires through the vehicle.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLabels every 5 inches for clear identification along the loom\u003c\/li\u003e\n  \u003cli\u003eColor-coded insulation matches common wiring standards for easier mapping\u003c\/li\u003e\n  \u003cli\u003eCentral 17-fuse block for consolidated circuit protection and quick service access\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this harness fit my car or custom project?\u003c\/h3\u003e\n\u003cp\u003eIt’s sold as a universal kit intended for many GM, Ford, Chrysler and other domestic models as well as custom builds, hotrods and rat rods. While the harness covers general circuits, some vehicles require minor routing adjustments, custom pigtails, or professional tuning to integrate with OEM components or advanced modules.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUniversal fit for GM, GMC, Chevy, Chrysler, Mopar, Ford, Mercury, Oldsmobile, Plymouth, Dodge, and more\u003c\/li\u003e\n  \u003cli\u003eCommonly used for restorations, engine swaps, and custom chassis wiring\u003c\/li\u003e\n  \u003cli\u003eProfessional or experienced DIY installation recommended for complex factory options\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and quality features should I expect?\u003c\/h3\u003e\n\u003cp\u003eThe harness uses copper-core wire for reliable conductivity and ductility, plus corrosion-resistant terminations to withstand automotive environments. The design focuses on durability and serviceability while keeping installation straightforward for experienced technicians or well-equipped hobbyists.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-quality copper core conductors for consistent electrical performance\u003c\/li\u003e\n  \u003cli\u003eDurable insulation and corrosion-resistant connectors for longer life\u003c\/li\u003e\n  \u003cli\u003ePre-terminated ends where practical to reduce on-vehicle crimping and soldering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The JY PERFORMANCE Universal 21-Circuit Wiring Harness Kit with 17 fuses is aimed at classic-car restorers, hotrod builders, custom-fabrication shops, and skilled DIYers who need a complete, labeled wiring solution. If you are replacing an old, brittle loom, wiring a chassis from scratch, or performing an engine swap where factory wiring won't adapt, this kit provides an organized starting point — however, consult an experienced installer if your vehicle has complex factory electronics or advanced safety systems.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this harness truly universal for different car makes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It's designed for many domestic makes (GM, Ford, Chrysler, Mopar) and custom projects, but some vehicles may need adapters or custom pigtails.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include fuses and labels?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The harness includes a 17-fuse block and wires labeled every five inches for easy identification and servicing.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"JY PERFORMANCE","offers":[{"title":"Default Title","offer_id":48081432248478,"sku":"B0BHL12DRR","price":120.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/jy-performance-front-view-harness-and-fuse-block.jpg?v=1785804160","url":"https:\/\/northtrailauto.ca\/products\/jy-performance-universal-21-circuit-wiring-harness-kit-17-blade-fuses-labeled-color-coded-loom-for-classic-cars-swaps","provider":"North Trail Auto","version":"1.0","type":"link"}