Partsam Trailer Light Box Kit — 2-Piece Welded Steel, 6" Oval & 2" Round LED, Powder-Coated Black

Partsam 2-piece welded trailer light box kit pairs heavy-duty steel housings with bright 6" oval LED tail lights and 2" round marker LEDs for a durable, waterproof rear lighting solution.

This kit combines rugged, powder-coated carbon-steel light boxes with energy-efficient LED lamps to give trailers a long-lasting, weatherproof lighting setup. Designed for direct welding to trailer frames, the set arrives ready to accept lights via rubber grommets and simple pigtail wiring. The components are IP65-rated for water resistance and built to replace fragile plastic housings commonly used on small commercial and utility trailers.

How does the welded steel housing improve trailer lighting durability?

The steel boxes are formed from heavy-duty carbon steel and finished in a black powder coat that resists rust and chipping. Welding the boxes to the trailer frame produces a permanent mount that won’t shift or crack like plastic housings when exposed to road vibration or cargo impacts.

• Carbon-steel construction for impact resistance and rigidity
• Durable black powder-coating protects against corrosion
• Weld-on design prevents loosening and reduces maintenance
• Rubber grommets seal the light assemblies and block moisture ingress

What lighting performance can I expect from the 6" oval and 2" round LEDs?

The kit’s 6" oval tail lights use multiple high-efficiency diodes with pearl-shaped reflectors to create broad, uniform illumination for brake, tail, and turn functions. The paired 2" round marker lights provide bright red side/rear marking visibility to increase detection in low-light conditions.

• 6" oval lights provide distinct stop and tail output with reverse/backup white LED
• 2" round LEDs act as supplemental red marker/position lights
• Low power draw extends battery and lighting system life
• Reflected optics improve light spread and visibility to other drivers

How simple is the installation and wiring process?

Installation centers on welding the two pre-fabricated boxes (left and right) to your trailer’s rear frame, pressing the lights into grommets, and connecting pigtail leads to the trailer harness. The kit eliminates the need for custom enclosures or complex plug harnesses, letting you hardwire directly to standard 12V trailer circuits.

• Weld-on mounting for a permanent attachment
• Lights press-fit into rubber grommets for a secure seal
• Color-coded pigtails: white=ground, red=stop, black=tail, yellow=reverse
• Compatible with most 12V semi, boat, and utility trailer systems

What comes in the box and how does the kit support maintenance?

The package includes two welded light boxes (left and right), two 6" oval red/white LED tail lights, two 2" round red marker LEDs, rubber grommets, and both two- and three-wire pigtails for wiring flexibility. Because the lights are replaceable and the steel boxes are permanent, future lamp swaps are straightforward without redoing mounts.

• 2x welded steel light mount boxes (left and right)
• 2x 6" oval red/white LED tail lights (23 LEDs each)
• 2x 2" round red LED marker lights with grommets
• 2x 2-wire and 2x 3-wire plug pigtails for wiring options

Who this is for: The Partsam welded trailer light box kit suits owners and fabricators who want a robust, low-maintenance lighting solution for utility trailers, small commercial rigs, boats on trailers, and agricultural equipment. If you prefer a permanent, rugged mount and clear, energy-efficient LED signaling, this kit gives a professional look and reliable performance without needing complex harness adapters.