---
product_id: 22187809
title: "58304 4-Pin Flat Wiring Harness, 12-Inch Vehicle-Side and Trailer-Side Wires"
brand: "curt"
price: "¥3714"
currency: JPY
in_stock: true
reviews_count: 8
url: https://www.desertcart.jp/products/22187809-58304-4-pin-flat-wiring-harness-12-inch-vehicle-side
store_origin: JP
region: Japan
---

# 4-pin flat connector for universal trailer compatibility Ergonomic grip tabs for effortless plug/unplug 16-gauge durable wiring for reliable signal transmission 58304 4-Pin Flat Wiring Harness, 12-Inch Vehicle-Side and Trailer-Side Wires

**Brand:** curt
**Price:** ¥3714
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect with confidence, drive with style.

## Quick Answers

- **What is this?** 58304 4-Pin Flat Wiring Harness, 12-Inch Vehicle-Side and Trailer-Side Wires by curt
- **How much does it cost?** ¥3714 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/22187809-58304-4-pin-flat-wiring-harness-12-inch-vehicle-side)

## Best For

- curt enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Durable rubber-molded housing resists rust and corrosion, guaranteeing long-term performance on every trip.
- • **Ready for Action:** Comes with 12-inch color-coded, blunt-cut wires on both vehicle and trailer ends for quick, hassle-free installation.
- • **Plug & Play Precision:** Ergonomic tabs ensure a secure, slip-free grip every time you connect or disconnect your trailer wiring.
- • **Signal with Confidence:** 16-gauge wiring supports all essential trailer lights—tail, brake, and turn signals—keeping you safe and visible.
- • **Universal Compatibility:** Industry-standard 4-pin flat design fits a wide range of trailers, making replacements and upgrades seamless.

## Overview

The CURT 58304 4-Pin Flat Wiring Harness features a rugged rubber housing and 16-gauge wires with 12-inch leads on both vehicle and trailer sides. Designed for universal 4-way flat trailer connections, it ensures reliable power delivery to tail, brake, and turn signals. Ergonomic grip tabs simplify installation and removal, making it the go-to choice for professional-grade trailer wiring.

## Description

Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer's electrical functions are, you need a solid connection to keep the power flowing and ensure safety on the road. CURT electrical connectors are designed and manufactured to give you a reliable connection every time you plug in your trailer. These 4-way flat connectors are designed to supply power for tail lights, turn signals and brake lights, as well as a ground connection. They feature durable rubber-molded construction and are each made with 12" of standard color-coded, bonded wire to easily splice into your vehicle's wiring system. This package includes both a vehicle-end and trailer-end connector and is compatible with all 2-wire vehicle systems.

## Features

- EASY GRIP. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of these vehicle-trailer connectors. They feature tabs on the top and bottom for a better grip when plugging in or unplugging
- RELIABLE CONNECTION. These 4-pin trailer wiring plugs come ready to splice into your existing vehicle and trailer wiring. They have 16-gauge wires and can be used to connect the taillights, brake lights and turn signals
- VERSATILE DESIGN. These vehicle-trailer connectors make great replacement 4-flat wiring plugs and sockets. The 4-pin wiring design matches industry-standard 4-way flat connectors and is compatible with a wide variety of trailers
- DURABLE CONSTRUCTION. For long-lasting use and a reliable connection, the housing of these 4-pin trailer wiring plugs is made from durable black molded rubber that will never rust or corrode
- READY TO INSTALL. Equipped with blunt-cut, color-coded wires and snap locks, these 4-prong trailer wiring connectors come ready to install. The 12-inch wire lead on the vehicle side and 12-inch wire lead on the trailer side provide extra length

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | CURT |
| Material | Rubber |
| Item dimensions L x W x H | 7 x 3 x 2 inches |
| Item Weight | 3.2 ounces |
| Connector Type | 4-way Flat Connector |
| Recommended Uses For Product | trailer wiring |
| Wire Diameter | 1.29 Millimeters |
| Manufacturer | Curt Manufacturing |
| UPC | 612314003044 |
| Global Trade Identification Number | 00612314003044 |
| Model | 4-Way Connectors |
| Product Dimensions | 7 x 3 x 2 inches |
| Item model number | 58304 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 58304 |
| OEM Part Number | 58304 |

## Product Details

- **Brand:** CURT
- **Material:** Rubber
- **Item dimensions L x W x H:** 7 x 3 x 2 inches
- **Item Weight:** 3.2 ounces
- **Connector Type:** 4-way Flat Connector

## Images

![58304 4-Pin Flat Wiring Harness, 12-Inch Vehicle-Side and Trailer-Side Wires - Image 1](https://m.media-amazon.com/images/I/61BfTOzLLDL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Wiring Harnesses Do Not Last Forever...So These Are The Perfect Solution
*by A***R on August 28, 2024*

I needed replacement connectors for weather / time ravaged vehicle and trailer connectors (after over 15 years of use, replacement may not be necessary, but is prudent). I ordered 2. Installed 1. So now I have both side extra should the need arise that I need replacement, I have the extras on hand and don't skip a beat. These are exactly what I needed for my replacement scenario and function perfectly. Yes I will order again (and probably before I need them to make sure I have them on hand).

### ⭐⭐⭐⭐⭐ Fast shipping
*by A***2 on June 19, 2024*

Great product

### ⭐⭐⭐⭐⭐ Work fine
*by C***H on October 20, 2024*

Seem to work fine.

## Frequently Bought Together

- CURT 58304 4-Pin Flat Wiring Harness, 12-Inch Vehicle-Side and Trailer-Side Wires
- Partsam 12V Submersible Square Led Trailer Light,Red White LED Stop Turn Tail License Brake Running Light Lamp for Trailers Under 80" Boat Trailer Truck Marine Camper RV Snowmobile,IP68,DOT Compliant
- Hopkins 7 Blade to 4 Wire Flat Vehicle To Trailer Connector Adapter Plug, Universal Fit for Vehicles with 7 Blade Adapters (47345)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/22187809-58304-4-pin-flat-wiring-harness-12-inch-vehicle-side](https://www.desertcart.jp/products/22187809-58304-4-pin-flat-wiring-harness-12-inch-vehicle-side)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-14*