{"product_id":"larlansz-12v-universal-power-window-switch-kit-for-2-door-vehicles-3-prewired-switches-with-led-indicators-harnesses","title":"Larlansz 12V Universal Power Window Switch Kit for 2-Door Vehicles — 3 Prewired Switches with LED Indicators \u0026 Harnesses","description":"\u003cp\u003e\u003cstrong\u003eLarlansz 12V Universal Power Window Switch Kit converts two manual doors into powered windows using a ready-made switch and harness assembly.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your vehicle didn’t come with power windows, this kit gives you the core electrical components to add them without buying brand-specific assemblies. It bundles three pre-wired switches, door-mounted switch holders, and three harnesses so you only need to supply a switched 12V source and a reliable ground. The switches include LED indicators, so wiring to an ignition-switched power source is recommended to avoid battery drain when the vehicle is off.\u003c\/p\u003e\n\n\u003ch3\u003eHow will this kit fit into my two‑door vehicle?\u003c\/h3\u003e\n\n\u003cp\u003eThe kit is made for mounting on door panels and works with most 12V systems on two‑door cars and trucks. The switch housings are universal-style so they can be trimmed or adapted into many interior panels. Because the switches arrive pre-wired, installation focuses on routing the harness and connecting power, ground, and the window motor leads.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIncludes three switches plus a two‑switch holder and a single switch holder for flexible door layouts.\u003c\/li\u003e\n  \u003cli\u003ePre-wired harnesses reduce soldering; connectors attach to your window motors.\u003c\/li\u003e\n  \u003cli\u003eDesigned for 12V systems—use a switched power source to protect battery life.\u003c\/li\u003e\n  \u003cli\u003eBest for DIYers comfortable with basic automotive electrical work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat tools and preparation are recommended before starting?\u003c\/h3\u003e\n\n\u003cp\u003eYou’ll need basic hand tools, wire crimpers, a multimeter, and optionally a 12V bench\/test battery to verify connections before final routing. Testing each switch and motor on the workbench saves time and prevents repeated door panel removal. If you don’t have factory wiring diagrams, a short online search for your vehicle’s window motor wiring or a generic Chevy power window diagram will often clarify wiring colors and functions.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMultimeter to confirm continuity and voltage.\u003c\/li\u003e\n  \u003cli\u003e12V test battery to check switches and motor function before installation.\u003c\/li\u003e\n  \u003cli\u003eWire strippers\/crimpers and quality connectors for secure splices.\u003c\/li\u003e\n  \u003cli\u003eTrim tools to fit switch holders into door panels cleanly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I avoid common electrical problems like constant LED drain?\u003c\/h3\u003e\n\n\u003cp\u003eThe kit’s switches have built‑in LEDs that will stay lit if wired to an unswitched 12V feed. Tie the positive supply through a keyed ignition circuit or a switched accessory circuit so the LEDs operate only when the vehicle is on. Also protect the circuit with the included inline fuse and verify grounds are solid to prevent intermittent operation or noise.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eConnect the kit’s positive lead to a keyed\/switched 12V source.\u003c\/li\u003e\n  \u003cli\u003eUse the inline fuse supplied to protect the wiring and switches.\u003c\/li\u003e\n  \u003cli\u003eAttach the black ground wire to clean chassis metal for reliable return path.\u003c\/li\u003e\n  \u003cli\u003eTest with a bench battery prior to finalizing door harness routing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat exactly comes in the package and what will I still need?\u003c\/h3\u003e\n\n\u003cp\u003eThe package contains three fully wired switches, one two‑switch holder, one single‑switch holder, and three wire harnesses ready to connect to motors. You will need the window regulators and motors (if not already installed), mounting hardware for the holders, and any additional wiring to reach a switched 12V source and ground. No printed manual is included, so plan to reference wiring diagrams or online installation videos as needed.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIncluded: 3 switches, 2-switch holder, 1-switch holder, 3 harnesses.\u003c\/li\u003e\n  \u003cli\u003eNot included: window motors\/regulators, detailed vehicle-specific instructions.\u003c\/li\u003e\n  \u003cli\u003eRecommended: wiring connectors, crimps, and insulating heat-shrink or tape.\u003c\/li\u003e\n  \u003cli\u003eHelpful: online vehicle wiring diagrams or YouTube installation guides.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Larlansz’s 12V Universal Power Window Switch Kit is aimed at experienced DIYers, custom fabricators, and classic car restorers who want a compact, pre-wired solution to add power windows to two‑door vehicles. If you’re comfortable tracing wires, testing circuits with a 12V source, and modifying door trim to accept universal switch holders, this kit supplies the electrical core to get your powered windows working without sourcing OEM switch packs.\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: Can I use this kit with any 12V window motor?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—it's a universal electrical switch harness for most 12V motors, but verify motor wiring and connector compatibility before final installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include instructions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No printed instructions; basic electrical knowledge is needed and online wiring diagrams or video guides are recommended.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Larlansz","offers":[{"title":"Default Title","offer_id":48086295150750,"sku":"B07L162PC5","price":45.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/larlansz-switches-front-panel.jpg?v=1785894136","url":"https:\/\/northtrailauto.ca\/products\/larlansz-12v-universal-power-window-switch-kit-for-2-door-vehicles-3-prewired-switches-with-led-indicators-harnesses","provider":"North Trail Auto","version":"1.0","type":"link"}