---
product_id: 476525043
title: "Trailer Wire Extension 4-Way 4 Pin Plug, 4 Wire 4-Flat Connector with Male & Female Plug 18 AWG 59 inch Hitch Light Trailer Wiring Harness Extender"
brand: "mosleyz"
price: "$30.19"
currency: USD
in_stock: true
category: "Mosleyz"
url: https://www.desertcart.us/products/476525043-trailer-wire-extension-4-way-4-pin-plug-4-wire
store_origin: US
region: United States of America
---

# 4-pin 4-flat connector 59-inch 18 AWG flexible wire Waterproof & dustproof casing Trailer Wire Extension 4-Way 4 Pin Plug, 4 Wire 4-Flat Connector with Male & Female Plug 18 AWG 59 inch Hitch Light Trailer Wiring Harness Extender

**Brand:** mosleyz
**Price:** $30.19
**Availability:** ✅ In Stock

## Summary

> 🔗 Extend your ride’s reach with confidence and style!

## Quick Answers

- **What is this?** Trailer Wire Extension 4-Way 4 Pin Plug, 4 Wire 4-Flat Connector with Male & Female Plug 18 AWG 59 inch Hitch Light Trailer Wiring Harness Extender by mosleyz
- **How much does it cost?** $30.19 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/476525043-trailer-wire-extension-4-way-4-pin-plug-4-wire)

## Best For

- mosleyz enthusiasts

## Why This Product

- Trusted mosleyz brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Weatherproof & Secure:** Environmentally friendly, waterproof casing protects against dust and moisture.
- • **Color-Coded 18 AWG Wires:** Simplifies installation with clear, industry-standard wiring identification.
- • **Durable Silicone Housing:** Premium insulation ensures safety and flexibility under all conditions.
- • **Plug & Play 4-Pin Design:** Seamlessly connect trailers, trucks, and ATVs with universal 4-flat wiring.
- • **Versatile Vehicle Compatibility:** Perfect for trailers, motorcycles, trucks, and more—never get stranded.

## Overview

This 59-inch 4-pin trailer wire extension features a robust 18 AWG color-coded wiring harness with premium silicone insulation and a waterproof, dustproof ABS casing. Designed for universal compatibility with trailers, trucks, and ATVs, it ensures safe, flexible, and easy connections for all your towing needs.

## Description

Features: Standard American car trailer cable with plug and socket for easy use and wide application, suitable for commercial vehicles, semi-trailers and trailers. Environmentally friendly plastic case, waterproof and dustproof, high security. Pure copper contact points, good electrical conductivity, sturdy and durable. This cable allows you to connect a 4-pin US plug on the vehicle to a 4-pin socket on a truck or towed item, and also acts as an extension cord to maintain a safe distance. Different colors of cable lines represent different signal lights, which are easy to install and practical. Item Type: Electrical Plug & Sockets Item Name: 4-pin Flat Plug with Socket Color: shown as picture Material: ABS+ copper Voltage: 6-24V Cable Length: 59in/ Wire gauge: 18*4AWG Package Size: 13.5 * 11 * 4cm / 5.3 * 4.3 * 1.6in Package Weight: 110g / 3.9oz Package Includes: 1 * 4-pin Flat Trailer Plug Wiring configuration: PIN 1-white wire (ground wire) PIN 2-brown wire (tail light and license plate light) PIN 3-yellow line (left / hand direction indicator) PIN 4-green line (right / horizontal indicator)

## Features

- 1. 4-pin Trailer Light Wiring Harness, Special Design to Fit For Trailer LED Lights, Tailgate Light Bars and Other Use
- 2. Premium Insulating Silicone Housing, Worry-free About Wiring Safety, Super Flexible and Durable
- 3. Environmentally friendly plastic case, waterproof and dustproof, high security
- 4.18 AWG COLOR CODED WIRES- Color coded 18 AWG wires clearly identify each wire's function; makes installation safe and straight-forward
- 5. Used for All Types of Vehicles Like Trailer, Truck, Motorcycle Trailer, ATV Trailer.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0887SF6LV |
| Best Sellers Rank | #109,419 in Automotive ( See Top 100 in Automotive ) #64 in Automotive Hitch Wiring |
| Brand Name | Mosleyz |
| Cable Type | Flat 4-Way |
| Connector Type | 4-pin Flat Trailer Plug With Socket |
| Customer Reviews | 4.7 4.7 out of 5 stars (834) |
| Manufacturer | Mosleyz |
| Material Type | Acrylonitrile Butadiene Styr, Silicone |
| Part Number | MOSTH25F |
| Recommended Uses For Product | electrical |
| Unit Count | 1 Count |
| Wire Diameter | 1.02 Millimeters |

## Product Details

- **Brand:** Mosleyz
- **Connector type:** 4-pin Flat Trailer Plug With Socket
- **Material:** Acrylonitrile Butadiene Styr, Silicone
- **Recommended uses for product:** electrical
- **Wire diameter:** 1.02 Millimeters

## Images

![Trailer Wire Extension 4-Way 4 Pin Plug, 4 Wire 4-Flat Connector with Male & Female Plug 18 AWG 59 inch Hitch Light Trailer Wiring Harness Extender - Image 1](https://m.media-amazon.com/images/I/6143vX48oTL.jpg)
![Trailer Wire Extension 4-Way 4 Pin Plug, 4 Wire 4-Flat Connector with Male & Female Plug 18 AWG 59 inch Hitch Light Trailer Wiring Harness Extender - Image 2](https://m.media-amazon.com/images/I/717957v9n5L.jpg)
![Trailer Wire Extension 4-Way 4 Pin Plug, 4 Wire 4-Flat Connector with Male & Female Plug 18 AWG 59 inch Hitch Light Trailer Wiring Harness Extender - Image 3](https://m.media-amazon.com/images/I/71fjVcK2eeL.jpg)
![Trailer Wire Extension 4-Way 4 Pin Plug, 4 Wire 4-Flat Connector with Male & Female Plug 18 AWG 59 inch Hitch Light Trailer Wiring Harness Extender - Image 4](https://m.media-amazon.com/images/I/71GNTsuZB4L.jpg)
![Trailer Wire Extension 4-Way 4 Pin Plug, 4 Wire 4-Flat Connector with Male & Female Plug 18 AWG 59 inch Hitch Light Trailer Wiring Harness Extender - Image 5](https://m.media-amazon.com/images/I/71+0zkpYJ0L.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

- Trailer Wire Extension 4-Way 4 Pin Plug, 4 Wire 4-Flat Connector with Male & Female Plug 18 AWG 59 inch Hitch Light Trailer Wiring Harness Extender
- CURT 58030 Trailer-Side 4-Pin Flat Wiring Harness with 12-Inch Wires
- Hopkins 47345 4 Wire Flat Adapter

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-12*