{"product_id":"partsam-4-waterproof-12-led-backup-reverse-light-pair-white-flange-mount-sealed-corrosion-resistant","title":"Partsam 4\" Waterproof 12-LED Backup Reverse Light Pair — White Flange Mount, Sealed Corrosion‑Resistant","description":"\u003cp\u003e\u003cstrong\u003eThese are two 4-inch flange-mount, waterproof 12-LED reverse\/backup lights from Partsam designed for trucks, trailers, RVs and boats.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt as sealed units with an acrylic lens sonic-welded to a molded plastic housing, these compact backup lights combine corrosion resistance with dual-brightness wiring. They fit into a 4.1\" inner diameter cutout and ship as a pair ready to hardwire, offering a straightforward upgrade or replacement for vehicles that need reliable reverse illumination.\u003c\/p\u003e\n\n\u003ch3\u003eHow durable and weatherproof are these lights?\u003c\/h3\u003e\n\u003cp\u003eThe housing and lens are molded and sonic-welded into one sealed assembly, so there are no removable trims that can leak. The materials resist rust and water intrusion, making them suitable for wet or salty environments common to towing and marine use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFully sealed acrylic lens bonded to housing\u003c\/li\u003e\n  \u003cli\u003eAll-weather molded plastic resists corrosion\u003c\/li\u003e\n  \u003cli\u003eDesigned for use on boats, RVs, trailers, and trucks\u003c\/li\u003e\n  \u003cli\u003eFlange mount reduces exposed seam points\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the size and mounting requirements?\u003c\/h3\u003e\n\u003cp\u003eEach lamp has an outer diameter of 140mm (5.5\") and an inner cutout diameter of 105mm (4.1\"). Installation requires drilling to match the flange and a hole center spacing of 104mm (4\"). The low profile sits about 24mm (0.9\") tall from the mounting surface.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOuter diameter: 140mm (5.5\")\u003c\/li\u003e\n  \u003cli\u003eInner cutout: 105mm (4.1\")\u003c\/li\u003e\n  \u003cli\u003eHeight: 24mm (0.9\") for a slim, flush fit\u003c\/li\u003e\n  \u003cli\u003eHole distance (center-to-center): 104mm (4\")\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I wire and control the brightness settings?\u003c\/h3\u003e\n\u003cp\u003eWiring is done with three hardwired leads: ground, high-brightness, and low-brightness. Use the white wire for ground, the red wire to activate the maximum output, and the black wire for a lower-intensity setting. This lets you pair the lights with existing brake\/reverse circuits or switch them independently.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWhite wire = ground\u003c\/li\u003e\n  \u003cli\u003eRed wire = high brightness (full output)\u003c\/li\u003e\n  \u003cli\u003eBlack wire = low brightness (reduced output)\u003c\/li\u003e\n  \u003cli\u003eHardwired leads for permanent, reliable installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? These Partsam lights suit owners who need compact, robust reverse illumination: tow-vehicle operators, trailer and RV owners, boaters mounting stern lights, and fleet managers seeking a sealed, low-profile replacement. They are ideal when you want a durable LED option that resists corrosion, installs with standard drilling, and provides selectable brightness for different driving or docking conditions.\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 waterproof for marine use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The lens is sonic-welded to the housing to form a sealed, waterproof unit suitable for boats and wet environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What wiring do I need to connect these lights?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They hardwire with three leads: white ground, red for high brightness, and black for low brightness.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Partsam","offers":[{"title":"Default Title","offer_id":55165668294999,"sku":"B01E5AKOL0","price":36.09,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/partsam-front-view-12-led-flange-light.jpg?v=1790357029","url":"https:\/\/britishgarage.co.uk\/products\/partsam-4-waterproof-12-led-backup-reverse-light-pair-white-flange-mount-sealed-corrosion-resistant","provider":"British Garage","version":"1.0","type":"link"}