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TowSmart 4-Way Flat Trailer Connector w/ 60" Harness
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TowSmart

TowSmart 4-Way Flat Trailer Connector w/ 60" Harness

Part Number: TS78RR
In Stock
$7.74
Retail:$8.99
You Save: 14%
Custom Fit Vehicle Wiring
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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
You're wiring up the trailer and want it done right the first time. This 4-way flat connector has pre-stripped, color-coded wires and extra length to reach where you need. Splice it in, test the lights, and you're ready to tow. 1-800-940-8924 to order TowSmart custom fit vehicle wiring part number TS78RR or order online at etrailer.com. Free expert support on all TowSmart products. Great prices and Fastest Shipping for TowSmart 4-Way Flat Trailer Connector w/ 60" Harness. Custom Fit Vehicle Wiring reviews from real customers.
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TowSmart Custom Fit Vehicle Wiring - TS78RR

Highlights

  • Simple Wiring Setup: 60" harness gives enough length to connect trailer lights easily.
  • Reliable 4-Way Connection: Flat plug provides the standard link for tail, turn, and brake lights.
  • Flexible Splice-In Design: Lets you hardwire into existing vehicle wiring when no plug is present.
  • Universal Fit: Works across many trailer wiring applications using a 4-flat style connector.
  • Build Custom Adapters: Can be paired with other connectors to create custom wiring solutions.

Features to know about

Handles Custom Wiring Projects with Ease: 4-Way Flat Plug and Lead

When you need a simple setup for trailer lights or want to build a custom adapter, this 4-way flat plug and lead gets the job done. It gives you the standard running, turn, and brake light functions in a straightforward wiring format that’s ready to splice into your existing setup.

Flexible for DIY Builds: 60" Splice-In Harness

The 60" splice-in harness makes it easy to route wiring where you need it. There’s plenty of length to work with, whether you’re adding a new connector or replacing an old one. Just connect the color-coded wires, and you’ve got a clean, functional link between your vehicle and trailer.

Ideal for Custom Adapters or Repairs: Universal Fit Design

This universal-fit connector is great for one-off wiring projects or repairs. You can even use it to make specialized adapters, like pairing it with another connector to create a dual-end harness when standard options don’t exist. It’s a handy piece to keep around for quick wiring fixes or new setups.

Simple, Reliable Power Connection: Vehicle-End Trailer Wiring

As a vehicle-end connector, it gives you a dependable connection point for your trailer lights every time you plug in. The solid construction and standard 4-flat design mean it’ll work with most small trailers and accessories without extra parts or complicated installs.

Specs

Electrical

  • Connector type: 4-way flat
  • Harness length: 60"

Fitment

  • Application: Universal fit
  • Connection type: Splice-in (vehicle end connector)

1448 Tow Smart Vehicle Wiring Harness with Vehicle End 4-Pole Connector - 5' Long





Video of TowSmart 4-Way Flat Trailer Connector w/ 60" Harness
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of TowSmart Custom Fit Vehicle Wiring - 4 Way Flat Trailer Connector 60 Inch Harness - TS78RR

Hi, everybody, Andy here with etrailer.com. Let's take a real quick look at this TowSmart 4-Way Flat Trailer Connector with 60-inch harness. So, this 4-way flat connector with this 60 inches of bonded wire is gonna give you what you need. Solid connections for stop, turn and taillights, no guesswork, just splice, test and tow. You do have a weather-resistant housing here, so that's gonna help protect against moisture and road grime. And this is designed for simple trailer hookups, so it should be very easy to get this installed and then get on down the road.

If you have any other further questions, don't hesitate to give us a call. We wanna make sure that you're getting exactly what you want and need. Well, that's gonna wrap up our quick look today. I do hope that it was helpful for you. Again, my name is Andy, thank you for joining me.

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See what our Experts say about this TowSmart Custom Fit Vehicle Wiring

  • Availability of 4-Way Female to Female Adapter
    Hi Jeff; none of the manufacturers make one but you can put an adapter together pretty easily. You can use the Hopkins 4-Way Flat Trailer Connector w/ 48" Harness # HM48035 or TowSmart 4-Way Flat Trailer Connector w/ 60" Harness # TS78RR and then attach the female connector from the Quick Fix (TM) 4 Pole Flat Car and Trailer Ends # 48195 to the other end of the pigtail.
    view full answer...
  • Wiring Adapter
    Hello again Andy; so you are wanting an adapter with two 4-way flat female ends? Nobody makes one but you could put one together using the # TS78RR. All you need to do is use the female connector from the # 48195 and attach it to the other end of the pigtail.
    view full answer...

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Info for this part was:

Employee William V
Edited by:
William V
Employee Andy C
Installed by:
Andy C
Employee Kim H
Written by:
Kim H

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