TRUE MODS 4 in Round 10LED Trailer Tail Light Kit - Bright, Waterproof

In this review the TRUE MODS 4 in Round 10LED Trailer Tail Light Kit is evaluated for truck and trailer owners who need a direct, reliable replacement for dim or damaged lights. The reviewer found the kit most valuable for utility trailers, RVs and work trucks because it combines a DOT and SAE FMVSS-108 certified fit with an IP67 waterproof construction, making it a straightforward safety upgrade that improves visibility and resists weather and submersion.

Key Features

• Perfect fit: The lights use the standard 4 in size with a 4-1/2 in cutout so replacements fit common trailer and truck applications without modification.
• Weatherproof construction: A sonically sealed body delivers an IP67 waterproof rating, so the lights tolerate rain, road spray and brief submersion.
• High visibility: Ten super-bright colored LEDs behind diffused polycarbonate lenses provide true-to-color illumination that enhances rear visibility at night.
• Easy installation: Each lamp includes a grommet and a space-saving 90 degree connector with 12 in of wiring, simplifying swap-outs in tight locations.
• Multi-function intensity: Amber and red lenses offer two intensity levels for parking and turn/brake functions while white lights provide a single, bright reverse light.

Who It's For

This kit is aimed at owners of trailers, flatbeds, campers, and semi equipment who need a plug-and-play replacement for worn incandescent lamps and want improved LED visibility and weather resistance. It suits DIY installers who appreciate the included grommets and 90 degree connectors that fit cramped mounting pockets.

Those who should look elsewhere include users needing custom-shaped housings or sizes other than the standard 4 in round, or buyers who require integrated side-marker combinations rather than separate round tail lights.

Pros & Cons

Pros

• DOT and SAE FMVSS-108 certification makes them a compliant replacement option.
• IP67 sonically sealed construction resists water and short submersion for reliable outdoor use.
• Bright 10-LED arrays improve night-time visibility compared with older incandescent lamps.
• Included grommet and 90 degree plug with 12 in wire simplify installation in tight spaces.

Cons

• Only available in a standard 4 in round size, so not suitable for nonstandard or integrated light housings.
• Intensity control is fixed to two levels for amber and red lenses, which may not match every vehicle wiring preference.

Specifications

Our Verdict

The TRUE MODS 4 in round 10LED kit is a practical value buy for trailer, RV and work truck owners who want a compliant, weatherproof upgrade over old incandescent tail lights. Its certified fit, visible LED array and easy-install grommet and plug make it a sensible safety-focused replacement that balances brightness, durability and straightforward wiring.

Frequently Asked Questions

Are these lights waterproof?
Yes, they are sonically sealed with an IP67 rating, meaning they resist dust and can tolerate brief submersion.

Do they fit standard trailer cutouts?
Yes, they are the standard 4 in round size and use a 4-1/2 in cutout for direct replacement in common housings.

Will they replace incandescent lamps easily?
Yes, customers report plug-and-play installation using the included grommet and 90 degree connector with 12 in of wire.