{"product_id":"partsam-15-5-led-trailer-light-bar-3-id-red-marker-white-reverse-slim-submersible","title":"Partsam 15.5\" LED Trailer Light Bar — 3-ID Red Marker \u0026 White Reverse, Slim Submersible","description":"\u003cp\u003e\u003cstrong\u003ePartsam's 15-inch dual-function light bar combines the DOT-required 3 ID red marker lights with an 8-LED bright white reverse\/load lamp in a slim, fully submersible housing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eCompact, rugged, and engineered for trailer, RV, and heavy-vehicle use, this Partsam light bar delivers two distinct lighting functions from a single low-profile unit. It meets FMVSS visibility needs for wide vehicles while offering a clear-lens white backup\/load light to illuminate hitching, loading, and reversing tasks. Built with an ultra-thin waterproof body and hardwired three-conductor cabling, the lamp is suitable for horizontal, vertical, or angled mounting where space is limited.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this light bar meet legal marker requirements?\u003c\/h3\u003e\n\u003cp\u003eThe unit provides three red identification marker lights spaced to comply with DOT expectations for vehicles wider than 80 inches. Its clear lens houses bright red LEDs that are visible across a wide angle, ensuring the vehicle’s width is clearly indicated at night and in poor weather. The slim design doesn’t sacrifice visibility while fitting narrow mounting locations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThree red ID LEDs integrated into a single 15.5\" assembly\u003c\/li\u003e\n  \u003cli\u003eWide-angle illumination aligned with FMVSS\/DOT guidelines\u003c\/li\u003e\n  \u003cli\u003eClear lens improves contrast and visibility\u003c\/li\u003e\n  \u003cli\u003eLow-profile housing ideal for narrow mounting spaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan one light serve both marker and reverse lighting needs?\u003c\/h3\u003e\n\u003cp\u003eYes — Partsam’s bar is a dual-function lamp with separate wiring to run red marker lighting or eight bright white LEDs for reverse or loading light. The three-wire hardwired setup lets you activate either function independently when connected to the proper circuits. This versatility reduces the number of fixtures needed on trailers, boats, and utility vehicles.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWhite wire = ground; red + white for red marker lights\u003c\/li\u003e\n  \u003cli\u003eBlack + white for the 8 white reverse LEDs\u003c\/li\u003e\n  \u003cli\u003eIndependent circuits avoid interference between functions\u003c\/li\u003e\n  \u003cli\u003eIdeal for backup illumination, night loading, and hitching\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the physical dimensions and mounting requirements?\u003c\/h3\u003e\n\u003cp\u003eThe lamp measures 15.5\" long, 1.3\" tall and 0.47\" thick, with a 14.5\" hole center-to-center for fastening. Surface mounting requires a roughly 0.57\" circular cut-out per wiring pass; mounting screws are not included. Its ultra-low profile makes it suitable where clearance is limited or a streamlined look is preferred.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOverall size: 15.5\" x 1.3\" x 0.47\"\u003c\/li\u003e\n  \u003cli\u003eMount hole spacing: 14.5\" center-to-center\u003c\/li\u003e\n  \u003cli\u003eRequired cut-out: ~0.57\" diameter for wiring\u003c\/li\u003e\n  \u003cli\u003eMount horizontally, vertically, or at an angle\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this light durable and waterproof enough for trailer use?\u003c\/h3\u003e\n\u003cp\u003eThe Partsam bar is built as a submersible, waterproof fixture with corrosion-resistant components suitable for marine and roadside exposure. Its sealed housing protects LEDs and wiring from moisture, road spray, and harsh environments. The narrow profile still provides robust protection so it performs reliably on boats, trailers, and heavy equipment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSubmersible waterproof construction for wet conditions\u003c\/li\u003e\n  \u003cli\u003eSealed clear lens to prevent water ingress\u003c\/li\u003e\n  \u003cli\u003eLow-profile design resists accidental damage\u003c\/li\u003e\n  \u003cli\u003eLong-lasting LED diodes reduce maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This Partsam dual-function 15\" light bar is aimed at trailer owners, RV and motorhome users, fleet managers, and anyone who needs DOT-compliant identification markers plus a compact reverse or load light. It's especially useful for vehicles with limited mounting space, boat trailers exposed to water, and work trucks that benefit from brighter, focused white illumination for night tasks. Installers and DIY enthusiasts will appreciate the simple three-wire hookup and flexible mounting orientation.\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: Does this light meet DOT marker requirements?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The bar includes three red ID LEDs and a wide-angle clear lens designed to meet DOT\/FMVS marker visibility for wide vehicles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I wire the dual functions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: White wire is ground; connect white+red for red marker lights and white+black for the eight white reverse LEDs.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Partsam","offers":[{"title":"Default Title","offer_id":55167245517143,"sku":"B01E5AM7TW","price":40.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/partsam-front-clear-lens-3-id-bar.jpg?v=1790379974","url":"https:\/\/britishgarage.co.uk\/products\/partsam-15-5-led-trailer-light-bar-3-id-red-marker-white-reverse-slim-submersible","provider":"British Garage","version":"1.0","type":"link"}