Trailer Light Box Kit with 3LED License Plate Light - Durable Trailer

In this review of the trailer light box kit with 3LED license plate light, the verdict is practical: this set is best for trailer, truck, and tractor owners who want a complete, weatherproof tail and marker light assembly that mounts directly to the frame. The single biggest reason to buy is the all-in-one welded-or-bolted steel box with pre-cut holes and bright SMD LEDs, which simplifies replacing or upgrading rear and side lighting while offering good protection for the lamps. Installation is straightforward for anyone comfortable with basic trailer wiring.

Key Features

• Complete set: The kit includes a steel housing with pre-cut holes for six oval tail lights, two round side markers and a 3LED license plate light so buyers receive a full rear/side lighting solution.
• Bright SMD LEDs: Bright SMD LED elements give clear red output for stop/turn, lower-brightness tail output and amber turn signals for improved visibility.
• Heavy duty construction: The housing is made of steel with a black powder-coated finish to resist weather and protect lights from road damage.
• Flexible mounting: The box can be welded or bolted to the rear, side, bottom or top frame, making it adaptable to new or existing trailers.
• Pre-wired and simple hookup: Lights are mounted on the box with pigtail wires labeled for ground, low and high brightness, and turn signal circuits to speed wiring.
• Serviceable design: Oval and round lamps can be removed by pressing or pushing from inside for easier maintenance or replacement.

Who It's For

The kit is aimed at trailer owners, small-fleet operators and DIY truck or tractor maintainers who need a durable, protected light assembly for towing use. It suits people who prefer welding or bolting as both mounting methods are supported, and those who value pre-cut locations that match common oval and round light sizes.

This is not the best choice for someone who needs a lightweight plastic enclosure or a plug-and-play harness with vehicle-specific connectors; basic wiring knowledge and the ability to hardwire pigtails are required. Buyers who need custom lamp spacing should verify hole placement before purchase.

Pros & Cons

Pros

• Solid build quality with black powder-coat provides good protection in bad weather.
• Includes bright SMD LEDs and a 3LED license plate light for improved visibility and safety.
• All-in-one box with pre-cut holes reduces fabrication time when replacing or upgrading lights.
• Simple removal method for lamps makes maintenance straightforward.

Cons

• Requires hardwiring to trailer circuits and some mechanical mounting work, so not fully plug-and-play.
• Steel construction adds weight compared with plastic options, which may matter on very light trailers.

Specifications

Purpose	Complete trailer tail light guard box set
Lights included	6 oval tail lights, 2 round side markers, 1 3LED license plate light
LED type	Bright SMD LED
Mounting	Weld on or bolt on to rear, side, bottom or top frame
Body material	Heavy duty steel with black powder-coated finish
Wiring	Pigtail wires; color-coded for ground, low, high and turn
Weather resistance	Designed to work in all kinds of bad weather

Our Verdict

For trailer and truck owners who need a robust, protected lighting solution, this steel light box kit offers excellent value by combining bright SMD LEDs, a 3LED license plate lamp and a pre-cut, serviceable housing that can be welded or bolted on. It is especially good for users who want a durable upgrade and can handle basic wiring and mounting, though those seeking the lightest or fully plug-in option should consider alternatives.

Frequently Asked Questions

Can the box be bolted on instead of welded?
Yes, the housing can be either welded or bolted to the trailer frame depending on installer preference.

How are the wires labeled for installation?
Pigtail wires are color-associated: white and black are used for side marker and license plate lights, while oval lights use black for ground, brown for low, red for high and yellow for amber turn.

Are the lights easy to remove for service?
Yes, oval lights can be pressed out and round lamps can be pushed from inside the box; silicone grommets are removable for access.