Konrali 4" Round LED Trailer Tail Light Kit with 13.8" 3rd Brake Bar, 25ft 5-Pin Harness & Backup LEDs

Konrali's 4-inch round LED trailer tail lights kit combines dual red stop/turn/tail lamps, white backup lights, a 13.8-inch third-brake LED strip and a 25-foot 5-pin harness for a complete, plug-ready trailer lighting solution.

This all-in-one kit supplies everything needed to upgrade or replace rear lighting on trailers, campers, trucks and utility equipment. It includes a pair of 4" round combination lights with integrated backup LEDs, a low-profile 13.8" third-brake identification bar, six mini marker clearance lights, a 25-foot wiring harness with a 5-pin flat plug tailored for reverse-light-equipped oval fixtures, plus reflective stickers. The components are waterproof and built for 12V DC systems, making them suitable for a wide range of tow vehicles and trailers.

How do these lights simplify trailer rear lighting upgrades?

Instead of sourcing separate stop, tail, turn and reverse lamps, this kit consolidates multiple functions into compact units and includes the harness and mounting parts you need. The round combination lights integrate backup LEDs to avoid cutting extra holes, while the third-brake bar provides additional visibility mounted on the rear face or rack.

• Two 4" dual red round tail lights with 16 LEDs each and built-in white backup LED.
• 13.8" LED third-brake identification bar with 15 red LEDs for center mounting.
• Six mini LED marker lights (four red, two amber/red) for side/clearance use.
• 25-foot, 5-pin flat wiring harness with prewired connectors and male bullet for backup.

What are the wiring and installation requirements?

Installation follows standard trailer wiring colors and uses a 3-prong pigtail plus an extra bullet plug for the white backup circuit. The lights fit typical round rubber grommets; mounting may require a 4.5" hole to seat the 4" lamp flush, and the kit includes instructions for connecting ground, tail, stop/turn and reverse wires.

• White = ground; black = low-brightness tail; red = high-brightness stop/turn brake.
• Blue bullet-style male plug powers the integrated white backup LEDs.
• Round lamp dimensions: approx. 5.4" outer grommet diameter, 4" inner lens diameter, 1 3/16" thickness.
• 25ft harness accommodates most trailer frame lengths without splicing.

Are these lights durable and compatible with my trailer?

The housings and LEDs are waterproof and designed for 12V DC vehicles, so they work on most trailers, RVs, trucks, utility equipment and agricultural vehicles. The LEDs mean low current draw and long service life compared with incandescent bulbs, while the included reflective stickers increase passive visibility when parked.

• Waterproof construction suitable for road and weather exposure.
• Universal for 12V systems: trailers, campers, trucks, dump trucks, boats, tractors.
• LED arrays reduce maintenance and lamp change frequency.
• Reflective stickers for added nighttime visibility.

Who is this for? This kit is intended for trailer owners, fleet managers, DIY mechanics and anyone replacing or upgrading rear lighting to an integrated LED solution. It suits people who want a plug-ready, weather-resistant lighting package with a dedicated third-brake bar and included harness for straightforward installation without sourcing separate components.