{"product_id":"universal-wiring-harness-kit-21-circuit-long-wires-easy-gm-color","title":"Universal Wiring Harness Kit 21 Circuit Long Wires - Easy GM Color","description":"\u003cp\u003eIn this review the Auto Parts Prodigy Universal Wiring Harness Kit is evaluated for classic car builders who need a comprehensive, long-wire harness that simplifies wiring for hot rods and rat rods. The biggest reason to buy is the \u003cstrong\u003eGM color coded\u003c\/strong\u003e wiring that makes identifying circuits faster during installation, and the kit includes 21 circuits useful for most vintage chassis conversions. It ships with a detailed instruction set that covers GM, Ford and Mopar variants, so builders who want a single harness to adapt to multiple platforms will find it appealing.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e21 circuit coverage:\u003c\/strong\u003e Includes horn, fan, dome light, hazard, radio, cigarette lighter, door locks and other core circuits so you rarely need extra wiring for a basic build.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGM color coded wiring:\u003c\/strong\u003e Color coding follows GM conventions to speed identification and reduce guesswork when connecting multiple circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra long wires:\u003c\/strong\u003e Wires are intentionally long to accommodate stretched frames, custom mounts and unconventional engine bay layouts without splicing extensions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGXL 125 high temp wire:\u003c\/strong\u003e The cross linked polyethylene jacketed wire resists grease, oil, gas and acid for improved durability in an automotive environment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlatform instructions:\u003c\/strong\u003e The kit includes detailed instructions with specific pages for GM, Ford and Mopar to guide installers through common variations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis harness is aimed at hobbyist builders and professional shops working on classic Chevy, Ford or Mopar based hot rods, rat rods and chassis swaps who want a single harness solution with long leads and broad circuit coverage. It fits best where OEM-style color coding will help speed a custom install and where protection from heat and fluids matters.\u003c\/p\u003e\n\u003cp\u003ePeople who should look elsewhere include restorers needing an exact factory OEM reproduction harness with original connectors, and installers who require an ultra-simplified plug-and-play kit for modern vehicles with integrated computer modules.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComprehensive 21 circuit list covers most needs for classic car builds without hunting for extra wires.\u003c\/li\u003e\n\u003cli\u003eGM color coded wires make tracing and routing easier for those familiar with GM wiring conventions.\u003c\/li\u003e\n\u003cli\u003eExtra long runs and GXL 125 jacketed wire add flexibility and durability in custom engine bays.\u003c\/li\u003e\n\u003cli\u003eIncludes instructions tailored to GM, Ford and Mopar to reduce installation guesswork.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWire labeling receives mixed feedback, so some installers may spend extra time confirming circuit ends during hookup.\u003c\/li\u003e\n\u003cli\u003eInstructions are useful but some customers report the schematic can be hard to follow for complex swaps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAuto Parts Prodigy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCircuits included\u003c\/td\u003e\n\u003ctd\u003e21 circuit harness (horn, fan, dome light, hazard, radio, etc.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire jacket\u003c\/td\u003e\n\u003ctd\u003eGXL 125 high temp cross linked polyethylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor coding\u003c\/td\u003e\n\u003ctd\u003eGM color coded for easier identification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire length\u003c\/td\u003e\n\u003ctd\u003eExtra long wires to accommodate custom builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDocumentation\u003c\/td\u003e\n\u003ctd\u003eInstructions with specific pages for GM, Ford and Mopar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Universal Wiring Harness Kit is a practical choice for classic car builders who need a robust, long-reach 21 circuit harness that simplifies wiring with GM color coding and durable GXL 125 wire. It offers strong value for most hot rod and rat rod projects, though installers should be prepared to verify some labels and consult the schematic for complex swaps.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this harness work for GM, Ford and Mopar cars?\u003c\/strong\u003e\u003cbr\u003eThe kit includes instructions and pages specific to GM, Ford and Mopar, making it adaptable across those platforms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the wires durable for engine bay use?\u003c\/strong\u003e\u003cbr\u003eYes, wires use GXL 125 high temp jacketed insulation that resists grease, oil, gas and acid for automotive environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs professional installation required?\u003c\/strong\u003e\u003cbr\u003eProfessional installation is recommended for complex swaps, though experienced hobbyists will find the color coding and instructions helpful.\u003c\/p\u003e","brand":"Auto Parts Prodigy","offers":[{"title":"Default Title","offer_id":48755382124763,"sku":"B07Z8CC4GJ","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71nosvoNdVL._SL1000.jpg?v=1778786951","url":"https:\/\/gearmusthave.com\/products\/universal-wiring-harness-kit-21-circuit-long-wires-easy-gm-color","provider":"GearMustHave","version":"1.0","type":"link"}