XtraGlow LED Trailer Light Kit — Submersible 10in American Flag Square Tail Lights with 3rd Brake Bar, 25ft Harness

XtraGlow's submersible 10-inch LED trailer light kit pairs American-flag square tail lights with a 3rd brake light bar, side markers, a 25ft 4-flat harness and mounting hardware for complete, waterproof trailer illumination.

This all-in-one lighting package is built to replace or upgrade rear lighting on trailers up to 80 inches wide. The kit combines two American-flag designed square tail lights, a 10" third brake LED light bar, four mini side markers (two red, two amber), a license plate bracket with illumination, a 25-foot wiring harness with a 4-flat plug, and all required mounting hardware. Every lamp is sealed for submersible use, so it’s suitable for boat trailers, utility trailers, snowmobiles, and other tow vehicles that face wet or corrosive conditions.

How does this kit improve trailer visibility at night?

The kit provides multiple light sources positioned for rear and side recognition, including a dedicated license plate lamp and a center-mounted third brake bar to increase noticeability to following drivers. LEDs deliver bright, instant illumination with clear color separation for brake, turn and running functions.

• Square tail lights: 15 diodes (12 red + 3 white) for stop, tail and plate illumination
• 10" brake light bar: 14 high-output 2835 LEDs for center brake/turn/tail signal
• Side markers: 2 red and 2 amber mini oval markers for side clearance
• Built-in license plate light on driver side improves plate legibility

Are these lights waterproof and suitable for boat trailers?

Yes — each lamp is fully sealed in a rugged housing to resist water intrusion and corrosion. The submersible rating and waterproof construction let you launch and retrieve trailers without removing the lights, providing reliable performance in rain, spray, and occasional submersion.

• Durable sealed circuit boards prevent water damage
• Aluminum alloy bases for improved corrosion resistance
• Designed for repeated exposure to wet environments

What wiring and functions should I expect from each component?

The wiring follows common trailer color codes but includes separate lines for high- and low-brightness functions where applicable. Clear wiring tips are included so you can connect brake, turn, running, and license plate lights correctly with the supplied 25ft harness and 4-flat plug.

• Square tail lights: white = ground, yellow = high brightness (brake), brown = low brightness (running/plate)
• 10" light bar: white = ground, red = high brightness (brake/turn), black = low brightness (running)
• Mini side markers: white = ground, red = positive
• Included 25ft harness with 4-flat plug simplifies connection to vehicle tow socket

Will this kit fit my trailer and what’s included for installation?

The kit is designed for trailers up to 80 inches wide and includes the primary components and mounting hardware needed for most installs. The aluminum alloy bases and license plate bracket are supplied so you’ll have the core parts to mount and wire the system quickly.

• Complete package: 2 American-flag square tail lights, 10" LED light bar, 4 mini side markers, 25ft wiring harness, license plate bracket, mounting hardware
• Aluminum alloy bases for secure, rust-resistant mounting
• Suitable for utility trailers, boat trailers, ATV/snowmobile trailers and similar applications

Who is this for: This XtraGlow kit is aimed at trailer owners who need a dependable, weatherproof rear lighting upgrade that combines style and function. It’s ideal for boaters, landscapers, recreational trailer users and anyone who wants a highly visible, low-maintenance LED lighting solution with easy installation and a patriotic American-flag aesthetic.