{"product_id":"njsbyl-6-pin-leer-truck-cap-wiring-harness-77in-tag-fuse-box-plug-powers-3rd-brake-light-dome-locks","title":"NJSBYL 6‑Pin Leer Truck Cap Wiring Harness — 77in TAG Fuse Box Plug, Powers 3rd Brake Light \u0026 Dome\/Locks","description":"\u003cp\u003e\u003cstrong\u003eThe NJSBYL 6-pin wiring harness provides a plug-and-play power connection for Leer camper shells, supplying circuits for the third brake light, interior dome light, lock\/unlock functions and auxiliary trailer lighting.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned specifically for Leer pickup toppers that use a TAG fuse box, this single harness replaces tangled DIY wiring with an integrated 6-conductor cable engineered for reliable electrical performance. At 197 cm (77 inches) long and built from durable, heat-resistant materials, it gives you enough reach to route cleanly around the truck cab while keeping each function on its own dedicated conductor. Installation requires no cutting of factory panels — the socket plugs into the bottom of the existing fuse box for a tidy connection.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this harness power multiple components at once?\u003c\/h3\u003e\n\u003cp\u003eThe harness groups six individual wires so each component has an independent circuit, preventing interference and simplifying troubleshooting. It connects directly into the TAG fuse box on compatible Leer toppers, routing power and signal lines to the accessory locations at the rear and inside the shell.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSix separate conductors — one per function for clear wiring paths\u003c\/li\u003e\n  \u003cli\u003eDedicated wires for 3rd brake light, dome light, locks, unlocks and auxiliary lights\u003c\/li\u003e\n  \u003cli\u003eCompatible with the Leer TAG fuse box for seamless integration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation for a DIYer?\u003c\/h3\u003e\n\u003cp\u003eInstallation is intentionally straightforward: find the TAG fuse box on the camper shell and plug the harness socket into the connector at the fuse box bottom. No cutting, soldering, or major panel removal is necessary, making it suitable for most owners with basic tools and a flashlight.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePlug-and-play connector designed for the fuse box socket location\u003c\/li\u003e\n  \u003cli\u003eNo destructive modifications to the topper or truck finish\u003c\/li\u003e\n  \u003cli\u003eClear alignment and length to reach typical component locations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the build and durability features?\u003c\/h3\u003e\n\u003cp\u003eThe cable assembly uses materials chosen for electrical conductivity and long-term heat tolerance to stand up to automotive conditions. The 77-inch length gives installers flexibility in routing and mounting while maintaining secure connections and reducing strain on terminals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e197 cm (77 in) total length for flexible routing options\u003c\/li\u003e\n  \u003cli\u003eHeat-resistant insulation and reliable conductor materials\u003c\/li\u003e\n  \u003cli\u003ePre-terminated connector designed to match the Leer TAG fuse box\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this harness support trailer lights and accessory loads?\u003c\/h3\u003e\n\u003cp\u003eYes — one of the conductors is intended to feed auxiliary trailer lighting or other low-to-moderate draw accessories, while remaining wires handle the topper-specific functions. For heavy-draw trailer systems or aftermarket amplifiers, verify circuit ratings and add relays or fusing as required.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAuxiliary conductor suitable for common trailer light loads\u003c\/li\u003e\n  \u003cli\u003eUse of proper fuses recommended; harness works with the TAG fuse box setup\u003c\/li\u003e\n  \u003cli\u003eFor higher current needs, install relays or additional fused circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The NJSBYL 6-pin Leer truck cap wiring harness is aimed at Leer topper owners who want a neat, factory-compatible way to power interior lights, the third brake lamp, lock\/unlock actuators and auxiliary lighting without extensive rewiring. It’s ideal for DIY installers, fleet technicians, and pickup owners who prefer a reliable, OEM-friendly electrical solution that preserves the appearance of the truck and camper shell.\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 compatible with all Leer camper shells?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits Leer toppers that use the TAG fuse box connector. Confirm your shell has that bottom-of-fuse-box socket before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to splice wires during installation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No splicing is required; the pre-terminated plug connects to the TAG fuse box for a plug-and-play setup.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NJSBYL","offers":[{"title":"Default Title","offer_id":48085307195550,"sku":"B0D8J29LWC","price":34.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/njsbyl-front-connector-and-fuse-box-tag.jpg?v=1785868890","url":"https:\/\/northtrailauto.ca\/products\/njsbyl-6-pin-leer-truck-cap-wiring-harness-77in-tag-fuse-box-plug-powers-3rd-brake-light-dome-locks","provider":"North Trail Auto","version":"1.0","type":"link"}