{"product_id":"partsam-4-flange-mount-waterproof-backup-reverse-led-light-pair-white-12-led-slim-sealed-design","title":"Partsam 4\" Flange-Mount Waterproof Backup Reverse LED Light Pair — White, 12-LED, Slim Sealed Design","description":"\u003cstrong\u003eThese are two 4-inch flange-mount LED reverse\/backup lights from Partsam, each sealed with 12 high-output LEDs for weatherproof reversing, braking, and auxiliary illumination on trucks, trailers, RVs and boats.\u003c\/strong\u003e\n\n\u003cp\u003eBuilt as a compact, sealed lighting solution, the Partsam 2PCS 4\" Waterproof Backup Reverse Lights combine a molded plastic housing and an acrylic lens sonic-welded into a single waterproof assembly. The fixtures are designed for flush flange mounting; they require a drilled installation and hardwiring with three conductors for ground, high-brightness, and low-brightness functions. Their slim profile and corrosion-resistant construction make them suitable for exterior vehicle applications where a compact, reliable light source is needed.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these lights stand up to wet or salty conditions?\u003c\/h3\u003e\n\n\u003cp\u003eThe Partsam units arrive as a fully sealed assembly with the acrylic lens permanently fused to the housing, preventing water ingress at the lens-housing seam. The all-weather molded plastic resists corrosion and mechanical wear typical on road and marine vehicles.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFully sonic-welded lens and housing for waterproof protection.\u003c\/li\u003e\n  \u003cli\u003eMolded plastic construction that resists rust and salt corrosion.\u003c\/li\u003e\n  \u003cli\u003eSlim sealed design minimizes places for water to collect.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat size hole and mounting pattern do I need for installation?\u003c\/h3\u003e\n\n\u003cp\u003eThese lights are flange-mounted and require drilling to fit the supplied dimensions: the outer diameter is 140 mm (5.5\"), inner cutout diameter is 105 mm (4.1\"), and the fixture height is 24 mm (0.9\"). The mounting hole center spacing is 104 mm (4\"), so measure carefully before cutting your panel.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOuter diameter: 140 mm (5.5\").\u003c\/li\u003e\n  \u003cli\u003eInner diameter: 105 mm (4.1\") for the cutout.\u003c\/li\u003e\n  \u003cli\u003eHole center distance: 104 mm (4\"); fixture height: 24 mm (0.9\").\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I wire these lights to my vehicle's electrical system?\u003c\/h3\u003e\n\n\u003cp\u003eEach lamp is hardwired with three color-coded leads for straightforward connection to common vehicle circuits: white for ground, red for high-brightness, and black for low-brightness. Use appropriate connectors, fuses, and routing to protect the wiring against chafing and moisture.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eWhite wire = ground (connect to vehicle chassis or ground point).\u003c\/li\u003e\n  \u003cli\u003eRed wire = high brightness (backup\/stop function as configured).\u003c\/li\u003e\n  \u003cli\u003eBlack wire = low brightness (tail\/marker function when used).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance can I expect from the 12 LEDs in each unit?\u003c\/h3\u003e\n\n\u003cp\u003eEach light contains 12 LEDs arranged to deliver focused, bright white illumination suitable for reversing and auxiliary signaling. They provide clear visibility at close range and are intended as serviceable vehicle lighting, not as a primary headlamp substitute.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e12 high-output LEDs per lamp for bright, concentrated light.\u003c\/li\u003e\n  \u003cli\u003eWhite color output appropriate for reverse and auxiliary lighting.\u003c\/li\u003e\n  \u003cli\u003eCompact layout gives broad coverage near the vehicle’s rear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Partsam 2PCS 4\" Waterproof Backup Reverse Lights suit owners of trucks, trailers, RVs and boats who need low-profile, weatherproof backup and auxiliary lighting. They are ideal for DIY installers and fleet maintenance teams who require sealed flange-mount fixtures with clear wiring designation and compact dimensions. If you need corrosion-resistant, easy-to-wire reverse lamps with a slim profile for recessed mounting, these Partsam LEDs offer a straightforward, durable option.\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: Are these lights truly waterproof?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The acrylic lens is sonic-welded to the housing to create a sealed, waterproof unit suitable for exterior use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What do the three wires do?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: White is ground, red is the high-brightness lead, and black is the low-brightness lead for tail or marker use.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Partsam","offers":[{"title":"Default Title","offer_id":48084775174302,"sku":"B01E5AKOL0","price":36.34,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/partsam-front-face-flange-mount.jpg?v=1785862788","url":"https:\/\/northtrailauto.ca\/products\/partsam-4-flange-mount-waterproof-backup-reverse-led-light-pair-white-12-led-slim-sealed-design","provider":"North Trail Auto","version":"1.0","type":"link"}