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  1. Custom Fit Vehicle Wiring
  2. CURT
  3. 4 Flat
  4. No Tow Package
  5. Trailer Hitch Wiring
  6. Vehicle End Connector
THIS ITEM IS NOT A FIT FOR
2012 Jeep Wrangler
CURT

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Part Number: C38RV
In Stock
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$137.55
Retail:$163.95
You Save: $26.40
Custom Fit Vehicle Wiring
Not Confirmed to Fit

2012 Jeep Wrangler

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Easily add a 4-way trailer connector with this custom-fit harness. The T-connector plugs into existing wiring - no cutting needed. Powered converter protects vehicle circuits and ensures consistent trailer lighting for safe towing in any conditions. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C38RV or order online at etrailer.com. Free expert support on all CURT products. Great prices and Fastest Shipping for Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
  • All Info
  • Reviews (5)
  • Q & A (0)
  • Videos (1)
  • Photos

CURT Custom Fit Vehicle Wiring - C38RV

  • 4 Flat
  • No Tow Package
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • Plug-In
  • CURT
  • Plug and Lead
  • Powered Converter

Easily add a 4-way trailer connector with this custom-fit harness. The T-connector plugs into existing wiring - no cutting needed. Powered converter protects vehicle circuits and ensures consistent trailer lighting for safe towing in any conditions.


Highlights

  • Custom-Fit For Easy Installation: Plugs directly into existing vehicle wiring, no cutting needed.
  • Powers Essential Trailer Lights: Supports brake lights, turn signals, and running lights.
  • Powered Converter For Safety: Uses a direct battery connection to avoid overloading circuits.
  • Fully Insulated Wiring: Reduces risk of shorts and interference with other electronics.
  • Weather-Resistant Construction: Protective sleeve and sealed connections prevent corrosion.
  • Complete Installation Kit Included: Comes with fuses, connectors, and zip ties for a secure fit.

Features to Know About

Straightforward Installation, But Plan for Access

The vehicle's wiring harness is often behind a trim panel or under the cargo floor. Some vehicles may require removing interior panels or lifting carpeted sections to reach it, but once accessed, the harness installs easily with quick-splice connectors.

No Cutting or Splicing Needed: Custom-Fit T-Connector

Plugging in a trailer shouldn't mean tearing into your vehicle's wiring. This custom-fit T-connector snaps directly into your factory wiring harness, so you can get your trailer lights up and running without any cutting or splicing. Just plug it in, and you're ready to tow.

Reliable Trailer Lighting for Every Trip: Powers Brake, Turn, and Running Lights

A well-lit trailer is a safe trailer. This 4-way wiring harness keeps your trailer's brake lights, turn signals, and running lights powered and in sync with your vehicle. Whether you're hauling a boat to the lake or a camper to the mountains, your lights stay bright and visible.

Prevents Overloaded Circuits: Powered Converter for Safe Towing

Some vehicles can't handle the extra electrical load of trailer lights. The built-in powered converter draws power directly from your battery, ensuring a steady, protected current to your trailer while keeping your vehicle's circuits from overloading.

Keep Wires in Check: Fully Insulated and Weather-Resistant

Towing means exposing your wiring to dirt, rain, and road grime. This harness features fully insulated wires and a sealed converter, helping to prevent shorts and corrosion. It's built to withstand the elements so you can tow with confidence in any weather.

Everything You Need for a Clean Install: Complete Kit Included

No extra trips to the hardware store - this kit comes with everything you need. With fuses, zip ties, and connectors included, you can complete the installation without hunting down extra parts.

Specs

Maximum amperage:

  • Stop/turn lights: 3 amps per circuit
  • Tail lights: 6 amps per circuit

Warranty:

  • 1-Year limited warranty


56535 CURT T-Connector Vehicle Wiring Harness with 4 Pole Trailer Connector

Installation Details C38RV Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Video of Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of CURT Custom Fit Vehicle Wiring - T Connector Vehicle Wiring Harness 4 Pole Flat - C38RV

Hi everybody. Andy here with etrailer.com. Let's take a real quick look together at this Curt T-connector vehicle wiring harness with four pole flat trailer connector. Now this harness has been designed to fit your 2024 and newer Hyundai Kona and on custom fit parts such as this wiring harness. I do recommend taking advantage of our vehicle fit guide here at etrailer.com. Simply input the year, make, and model of your vehicle and our fit guide will confirm if this will work for you or if we have something comparable that will work for you.

Now this will give you a four-way flat trailer connector at the back of your Kona to power your trailer signal lights. This will be compatible with five, six, and seven pull adapters. Those adapters are sold separately. As you can see, this does come with a dust cap for that four-way flat connector to keep it protected when it's not in use. And as you know, a welded trailer is a safe trailer.

This four-way wiring harness is gonna keep your trailer's brake lights, turn signals and running lights powered and in sync with your Kona. So whether you're hauling a boat to the lake or a camper to the mountains, your lights are gonna stay bright and visible. Now the these custom fit T connectors are going to snap directly into your factory's wiring harness so you can get your trailer lights up and running without any cutting or splicing. You're just gonna plug these in and you're gonna be ready to tow. Typically, the vehicle's wiring harness is often behind a trim panel or under the cargo floor.

Some vehicles may require removing interior panels or lifting carpeted sections to reach it. But once access, the harness is going to install easily with these connectors and the in the included instructions will guide you through that installation process. Now, some vehicles can't handle the extra electrical load of trailer lights, and this has a built-in power converter that's going to draw power directly from your battery. So that's going to ensure a steady, protected current to your trailer while keeping your vehicle circuits from overloading. So this kit is going to come with everything that you need to get this installed.

You're gonna get the fuse holder, you're gonna get wiring to run the wire from the module to your vehicle's battery. You're gonna get butt connectors, cable ties, a fuse, and as I mentioned instructions, everything that you're gonna need to get this installed without hunting down extra parts. However, I do wanna recommend something that is not included with this kit and that is dielectric grease, and you, dielectric grease, you should use a small amount of that on all of your electrical connections, like the plugs on the vehicle and the four pole flat connector itself. That grease is designed to help prevent electrical failures caused by corrosion and moisture. So if you don't have some and you'd like to pick some up on your screen, I am including the number for that grease. You can just take that number and pop it in the search field of our website. That will take you to the grease and you can add that to your order. Well, I think 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.

Customer Satisfaction Score:

Ratings & Reviews

5.0

5 reviews
Easily add a 4-way trailer connector with this custom-fit harness. The T-connector plugs into existing wiring - no cutting needed. Powered converter protects vehicle circuits and ensures consistent trailer lighting for safe towing in any conditions.

by:
2025 Hyundai Kona

Great product! Take your time installing the wires and make sure they are zip tied well and out of the way of moving parts. use dielectric grease on all connections or splices.



by:

It works. I love it. Didn’t think I would ever find the correct harness!



by:

Great Customer Service!



by:

Couldn't ask for better communication, great service



by:


5
5

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

  • What Is The Correct Wiring Harness For 2025 Hyundai Kona N Line S AWD
    Hello Mark, thanks for reaching out. The Curt # C38RV is the correct wiring harness for the 2025 Hyundai Kona N Line S AWD with LED lights. This is a brand new harness and as of right now (11/11/24) it is actually still in production, so it is not available quite yet. They are available for pre-order and we hope to have them ready to ship early next year. If you can't wait that long you can use the Curt # C59496 instead but this is a universal hardwire harness and will require some cutting...
    view full answer...
  • Wiring Harness for 2025 Hyundai Kona Limited Electric
    Hey Wes! The Curt T-Connector Vehicle Wiring Harness # C38RV is the right part for your 2025 Hyundai Kona Limited Electric. This is confirmed to fit all models of the 2025 Kona. Since you have an EV you will have to run the hot lead to your 12V accessory battery (probably in the trunk or under a seat) instead of the main battery. Are you adding the wiring for towing or an accessory? If you're towing you will also need a ball mount like the # e66PR.
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Katherine B
Updated by:
Katherine B
Employee Andy C
Installed by:
Andy C
Employee Sabrina W
Written by:
Sabrina W

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