Partswcgg 12V LED Trailer Tail Light Kit – 25ft Harness, Submersible Sealed Lights, Complete Mounting Hardware

Partswcgg 12V LED Utility Trailer Tail Light Wire Kit is a complete, submersible lighting package that upgrades trailer rear, side, and ID lighting with a 25ft harness and all mounting hardware.

This kit bundles square rear combination tail lights, mini oval side markers, dual third-brake light bars, an identification clearance light bar, a 25-foot 4-flat wiring harness, a license plate bracket and the mounting hardware required to outfit most utility and boat trailers. Every lamp is fully sealed for submersion, making it suitable for boat trailers and wet environments while keeping wiring organized with a long harness that reaches most trailer noses.

What exactly comes in the Partswcgg trailer LED kit?

The set includes multiple lamp types and the wiring needed to connect them to a tow vehicle with a 4-flat plug. Components are designed to cover rear tail functions, side marker duties, and identification/clearance lighting in one purchase.

• 2 square rear combination tail lights (tail/stop/turn/run/reflector)
• 6 mini oval side fender marker lights (2 red, 4 amber)
• 2 × 15" trailer 3rd brake tail light bars (left and right signal bars)
• 1 × 14.17" 3-light red ID marker clearance light bar
• 25ft 4-flat wiring harness, license plate bracket, mounting screws and hardware

How are the lights wired and what do the colors mean?

Wiring follows common trailer color codes but the kit includes specifics for each lamp type so you can match functions quickly during installation. Ground is shared via mounting hardware on some bars and dedicated white/black ground leads on others.

• Square tail lights: white = ground, yellow = brake/turn bright, brown = running light/low
• 15" tail light bars: white = ground, red = brake/stop/turn bright, black = running light
• Mini side markers: white = ground, black = positive
• Clear labeling and a 25ft harness reduce need for splicing when reaching the vehicle plug

Are these lights waterproof and suitable for boat trailers?

Yes—the lamps are fully sealed and rated for submersion, with polycarbonate lenses and corrosion-resistant bases to withstand wet, salty, or freshwater conditions. Stainless steel mounting bases on the ID bar reduce corrosion at attachment points.

• Completely sealed housings prevent water entry to protect circuit boards
• Polycarbonate lenses resist impact and UV fading
• Stainless steel base on the ID marker light for added corrosion resistance
• Designed to meet common marine trailer lighting demands without extra sealing

How long does installation take and what tools are needed?

Installation time depends on trailer complexity but many users complete mounting and wiring in one afternoon with basic tools. The 25ft harness and included hardware simplify routing and connection; no advanced wiring tools are usually required.

• Common tools: drill, screwdriver, wire stripper/crimp tool, silicone sealant for extra protection
• Harness length often eliminates need for splicing to reach the tow vehicle plug
• Surface-mount bars use screws through the base and ground through the hardware or dedicated white lead
• Follow provided wiring tips for correct function of brake, turn and running lights

Who this kit is for: Owners of utility trailers, boat trailers, landscaping trailers, or small commercial trailers who need a turnkey lighting solution. It’s ideal for anyone replacing corroded lights, converting incandescent to LED to improve visibility and longevity, or outfitting a trailer used in wet environments. Technically comfortable DIYers and professional installers alike will appreciate the complete hardware set and long harness that reduce installation time and maintenance needs.