CORINTH 12V Submersible Square LED Trailer Tail Light Kit — Waterproof, 25' Wire Harness, DOT/SAE Compliant

CORINTH AUTO 12V Submersible Square LED Trailer Tail Light Kit delivers DOT/SAE-compliant, waterproof stop, tail and turn lighting for trailers up to 80 inches wide.

Designed for boat trailers, utility trailers and small trucks, this pair of square LED taillights replaces fragile incandescent lamps with bright, long-lasting LEDs. Each kit includes matching left and right fixtures plus a 25-foot wire harness to reach most towing setups without splicing. The sealed housings protect the LEDs and wiring from water and road debris while meeting standard trailer mounting dimensions.

How bright and visible are these LEDs on the road?

The high-output LED array in each square lamp provides sharp brake, tail and turn signals that are easier to spot at distance than old-style bulbs. LEDs illuminate quickly, offering clearer communication to drivers behind you when braking or changing lanes. The lenses focus light evenly to reduce glare while maximizing visibility.

• High-intensity LED emitters for improved daytime and nighttime visibility
• Separate circuits for stop, tail and turn functions
• Even light distribution through a durable square lens

Will these lights survive exposure to water, salt, and rough conditions?

These lights are built with a watertight housing and corrosion-resistant contacts so they withstand wet launches, coastal salt spray and ordinary road grime. The submersible design prevents moisture intrusion into the lamp cavity and wiring. This makes them well suited to marine trailers and other wet environments without frequent maintenance.

• Fully sealed, water-resistant construction for boat and utility use
• Durable plastics and plated terminals resist corrosion
• Designed to meet DOT/SAE expectations for trailer lighting durability

What’s included and how easy is installation?

The kit ships with a left and right square LED tail light and a 25-foot pre-wired harness so you can connect to the tow vehicle without cutting long runs of cable. Fixtures match standard trailer mounting footprints for a straightforward swap into existing light cutouts. Basic hand tools and a few mounting screws are typically all that’s required to complete installation.

• Left and right LED tail light assemblies included
• 25' pre-attached wire harness minimizes splicing
• Fits standard trailer light mounting positions for fast replacement

Are these lights compatible with my trailer’s electrical system?

These are 12V DC units designed for common trailer wiring used on passenger vehicles, trucks and SUVs. They provide the standard stop, tail and turn signal functions and work with typical 4- or 5-flat trailer connectors when wired correctly. If your trailer uses unusual voltages or integrated smart brake controllers, verify compatibility before purchase.

• 12-volt DC operation for standard towing setups
• Works with common 4-flat or 5-flat trailer connector systems when wired properly
• Compatible with most passenger vehicles and light trucks

Who is this for: The CORINTH AUTO square submersible LED tail light kit is aimed at boat owners, landscapers, contractors and weekend haulers who need reliable, waterproof signaling for trailers up to 80 inches wide. It’s a practical upgrade for anyone replacing worn incandescent trailer lamps or installing lighting on new builds where durability and clear visibility are priorities. Choose this kit if you want a straightforward, standards-compliant lighting solution with a long wiring reach and low maintenance requirements.