Universal Smoked Square 38 LED Combination Tail Lights - Stud Mount

In this review of the Universal Smoked Square 38 LED Combination Tail Lights we test a budget-friendly, stud-mount rear lamp intended for 12V trucks, trailers, vans and many off-road Wranglers that accept modification. The single biggest reason to consider these lights is the clear multi-function LED array: 16 red LEDs for stop/turn/tail, 18 white LEDs for backup and 4 white LEDs for license illumination, which together deliver a bright, modern smoked look that improves visibility and curb appeal on flatbed trucks and trailers.

Key Features

• 38 Super-bright LEDs: Provides distinct stop/turn/tail, backup and license plate illumination for clearer signaling and backup visibility.
• Stud mount design: Three studs on the back bolt to any flat surface, making the assembly easy to secure on truck beds and trailer faces.
• Universal 4-wire hardwire: White ground, black tail/license, red stop/turn and yellow reverse wires allow straightforward integration into 12V systems when spliced.
• Weather resistant construction: Polycarbonate housing and acrylic lens are rated for outdoor use and resist water, shock and vibration for typical vehicle duty.
• Compact but slightly larger than stock: At about 5.9 in by 6.69 in by 2.75 in, the housing provides broad light output while remaining suitable for many trailers and work trucks.

Who It's For

This product is a practical choice for owners of trailers, flatbed trucks, pickups, RVs and many commercial vehicles who want a bright, smoked LED tail lamp that bolts to a flat surface and improves rear lighting and license illumination. The smoked lens and LED layout suit users wanting a modern look with multi-function output.

It is less suitable for buyers who need a plug-and-play replacement for factory Wrangler YJ, CJ, TJ or JK tail lights without modification. Expect to splice wires and possibly drill larger bolt holes; those who cannot or will not modify bodywork should look for vehicle-specific direct-fit assemblies instead.

Pros & Cons

Pros

• Bright, multi-function LED array provides clear stop/turn and backup signals.
• Stud mount and three-stud pattern make for a secure mechanical attachment to flat surfaces.
• IP65-style weather resistance and durable housings stand up to rain and vibration.

Cons

• Not a direct factory replacement for many Wrangler tail lights and requires wiring splices and possible drilling for proper fit.
• Some users report mixed longevity, so durability may vary by use and installation quality.

Specifications

Voltage	12V DC
LED count	38 LEDs (16 red, 18 white backup, 4 white license)
Mount type	Three-stud flat surface bolt mount
Dimensions	About 5.9 in x 6.69 in x 2.75 in
Wiring	4-wire hardwire: white ground, black tail/license, red stop/turn, yellow reverse
Housing	Polycarbonate with acrylic lens
Water resistance	Weatherproof (suitable for heavy rain)

Our Verdict

The Universal Smoked Square 38 LED Combination Tail Lights are a cost-effective way to upgrade rear lighting for trailers, flatbeds and many 12V work vehicles when a bolted flat-mount solution is acceptable. They deliver strong brightness, a useful license light and a tough exterior, but require basic wiring splicing and occasional trimming or drilling for some Wrangler applications. For buyers comfortable with modification, they offer good value and improved visibility.

Frequently Asked Questions

Are these plug-and-play for Wrangler tail mounts?
Not directly; these are stud-mount and are larger than many stock Wrangler lights, so expect modifications and wiring splices.

Do they include a wiring harness?
No, the lights come with a 4-wire hardwire lead and will require splicing into your vehicle wiring.

Are they waterproof for outdoor use?
Yes, the polycarbonate housing and acrylic lens are built for weather resistance and can be used in heavy rain.