Partswcgg 12V Trailer LED Tail Light Kit with 25ft Wiring Harness — Submersible, Complete Stop/Turn/Tail

Upgrade your trailer's visibility with a ready-to-fit lighting package engineered for marine and road use. This kit bundles square rear combo lights, six mini oval side markers, a 15.5-inch third brake light bar, a long wiring harness with a 4-flat plug, mounting hardware, and a license plate bracket — all in submersible housings designed to resist water and corrosion.

How does this kit simplify trailer lighting upgrades?

Everything required to modernize trailer illumination is included so you avoid piecing components together. The wiring harness reaches most trailer lengths, and the mounting hardware gets the lights secured quickly.

• Two square combo tail lights replacing traditional assemblies
• Six mini oval side marker/clearance lights (2 red, 4 amber)
• 15.5" third brake identification light bar for center mounting
• 25 ft wiring harness with 4-flat plug plus license bracket and fasteners

What lighting functions does each component perform?

The square rear fixtures act as multi-function assemblies while the bar and markers supply added brake, tail, turn, and marker visibility. Each piece is multi-use so the trailer meets common road and marine visibility needs without extra parts.

• Square tail lights: stop, brake, turn, tail, rear reflex, built-in left license illumination
• 15.5" LED bar: center stop/turn/tail duties with surface-mount installation
• Mini oval lights: side marker, clearance, and side reflex functions
• License plate bracket: dedicated illumination for compliance

Are these lights waterproof and how are they wired?

The housings are fully sealed to keep moisture out of the circuit board, allowing use on boat trailers and in wet environments without internal corrosion. Wire color codes are provided for each fixture to speed connection and reduce errors during installation.

• Fully sealed, submersible LED housings for water resistance
• Square lights: white ground, yellow high-brightness brake, brown running/license
• 15.5" bar: white ground, red high-brightness brake/turn, black running
• Mini markers: white ground and black positive, simple two-wire hookup

How bright and durable are the LEDs for road and marine use?

The LEDs use multiple diodes per fixture to deliver clear stop and marker signals visible in daylight and darkness. Materials are chosen for outdoor exposure so lights resist impact, salt spray, and vibration common on trailers.

• Square tail lights: 15 diodes total with three white license LEDs built into left unit
• 15.5" light bar: 11 LEDs for center stop/tail/turn signaling
• Mini oval markers: dual-diode per lamp for consistent marker visibility
• Sealed construction reduces moisture-related failures and short circuits

Who is this for: This Partswcgg kit is aimed at trailer owners who want a single purchase to replace or upgrade all exterior lighting — especially boat trailers, utility trailers, and work trailers that need water-resistant fixtures and a long wiring harness. It suits DIY installers who prefer clear wiring color codes and complete mounting hardware, plus fleet or private owners seeking dependable LED visibility that meets common road and marine signage needs.