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Wesbar Trailer Light Wiring Harness 5 Flat 35ft to re-wire Trailer Lights with Disc Brakes

Wesbar Trailer Light Wiring Harness 5 Flat 35ft to re-wire Trailer Lights with Disc Brakes

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Part Number: 26429
by Wesbar: 26429
Wesbar 35ft Trailer Wiring harness Standard for Trailers
Feature: WARNING: Cancer and Reproductive Harm -

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Quantity Price
1 $34.62
2 - 4 $25.18
5 - 8 $23.88
9+ $23.08
Price $34.62
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This 35 ft Boat Trailer Wiring harness by Wesbar will replace your old or worn out trailer wiring with new, high quality 16 gauge wires.  You may also be seeking out this product if you are adding Surge Disc Brakes to your Marine Trailer, or switching from Drum Brakes to a newer Disc System.  This Product uses a Standard 5 Flat Trailer Connector, which has an additional wire compared to the usual 4 Pin Connectors seen on most utility trailers.  The additional wire in this case is the blue wire, and this new connection is used to send power to your Trailer's Electric Backing Solenoid, which is a powered valve that allows you to reverse your trailer without activating its Hydraulic Disc Brakes.

Because of this additional wire, you may require a new adapter to fit your trailer plug into your tow vehicle.  We have a 5 Flat Adapter to your Tow Vehicles 7 Pin Round Plug available on our website which would fix that issue.

This Harness uses color coded wires to send power to your trailer's lights and brake functions.  The Colors are the same White, Green, Yellow, Brown, and Blue wires that all trailer harnesses use. The Functions of these wires are as follows: White (Ground Wire), Green (Right Turn), Yellow (Left Turn), and the Brown Wires Operate the Left and Right Side Running Lights.  The Blue wire runs to your Reverse Lockout Solenoid when operating disc brakes.  

This 35 ft length is perfect for longer trailers, or those wanting to wire their trailer up all the way to a set of lights at the top of their Boat Trailer Guide Poles.  Each wire is 35 ft long, except for the White Ground Wire and Blue Brake Wire, which are about 5 ft long each, and are designed to mount on the trailer tongue and reverse solenoid, closer to the tow vehicle end of the trailer.  

Wesbar Lighting and Wiring products are known for their top of the line quality by Trailer Manufacturers across the globe, this wiring harness is no exception.  Compared to your typical unbranded trailer wiring harness, the Wesbar version uses thicker gauge wire, a Wishbone Style wire setup for easier installation, and is backed by a 1 year manufacturer's warranty. This 'wishbone' style harness means that it's designed to send (1) brown wire, and (1) yellow wire down the left side of your trailer frame, and (1) brown wire and (1) green wire down the right side of your trailer frame to make installation easier and more straight forward.

The Copper Wires also come pre-stripped on this Wesbar Wiring Harness, so this product is ready to install to your trailer light wires using some simple Trailer butt Connectors or your favorite waterproof heat shrink material.


- 35ft length on the main lighting wires (Brown, Green, & Yellow)

- 4ft length for the White and Blue Wires.

- 16 Gauge Wires

- Wishbone Style Harness for Easier Installation

- 5 Pin or 5 Flat Connector.

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