Truck-Lite 50883 – 50 Series Gray Surface Mount Adapter Box with Rear Access

Optimize your trailer's electrical wiring configuration with the Truck-Lite 50883 50 Series Surface Mount Adapter Box. Specifically engineered for rear-entry applications, this 2-inch deep gray adapter box features a dedicated back access hole alongside a bottom entry port with built-in strain relief. Complete with molded, threaded brass inserts for secure receptacle mounting, it delivers NEMA 4X-grade weather protection, making it an ideal mounting foundation for heavy-duty commercial fleets and 7-way nose boxes.

When configuring commercial vehicle and trailer connections, routing wiring through tight spaces requires specialized hardware. The Truck-Lite 50883 50 Series Gray Surface Mount Adapter Box provides fleet maintenance teams with a rugged, highly versatile enclosure designed specifically to facilitate clean rear-entry wiring routing without straining cables.

Unlike standard adapter boxes, the 50883 features a dedicated back access hole, allowing you to feed wiring harnesses directly into the rear of the box. This layout simplifies retrofits and upgrades in complex mounting environments where front panel disassembly isn't ideal. For added installation flexibility, it also includes a bottom entry port integrated with a heavy-duty strain relief mechanism to absorb road vibration and pull-stress on standard wiring paths.

Durability is guaranteed by a non-conductive, rustproof gray polycarbonate construction that offers NEMA 4X performance against chemical exposure, road salt, moisture, and impact. Installation is further streamlined by premium molded, threaded brass inserts that provide a reliable, strip-resistant grip for mounting your 7-way electrical receptacles or smart nose boxes.