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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
2001 Nissan Frontier
etrailer Installation
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CURT

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

Part Number: C34FR63HY
In Stock
$112.28
Retail:$142.95
You Save: $30.67
Custom Fit Vehicle Wiring
Not Confirmed to Fit

2001 Nissan Frontier

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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
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 C34FR63HY 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 (3)
  • Q & A (0)
  • Videos (1)
  • Photos

CURT Custom Fit Vehicle Wiring - C34FR63HY

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


56562 CURT T-Connector - Surface Mount Technology - 4 Wire

Installation Details C34FR63HY Installation instructions

This Product Fits The Following Vehicles




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

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 Harness 4 Pole Flat - C34FR63HY

Hi, everybody. Andy here with etrailer. Let's take a quick look at this CURT T-connector vehicle wiring harness with four pole flat trailer connector. Now, this harness has been designed to fit your 2025 to current Kia K4, excluding the GT models, and then your Kia K5. And on custom fit parts such as this harness, I do recommend taking advantage of our vehicle fit guide here at etrailer. Just pop in 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 custom fit trailer wiring harness is gonna make it very easy to add a trailer connector without cutting or splicing into your vehicle's factory wiring. This is going to plug into your existing wiring once you access the factory harness, which is typically located behind an interior trim panel or under the cargo floor. You may need to remove a few panels or lift some carpeting to reach it, but the installation itself is straightforward using the included quick splice connectors that you see here. Once installed, this is going to give you power for your trailer's brake lights, turn signals, and running lights. And this powered converter is going to draw power directly from your vehicle's battery instead of the factory lighting circuits.

That's gonna help protect your vehicle's electrical system from overload. The wiring is fully insulated to reduce the risk of shorts or electrical interference, while the sealed connections and protective sleeve are going to help protect this from moisture and give it long lasting durability. So this is going to include everything that you need for installation, everything that you see here. Instructions as well will guide you through the installation process. If you think you want some help with installation, on this product page, typically underneath the photo section, we have a link that will take you to our installer locator.

Click that link, answer the questions that it has for you, and that locator will find an installer in your area that etrailer has partnered with to install this for you. Well, again, my name's Andy. Thank you for joining me.

Ratings & Reviews

5.0

3 reviews
5 Stars
(3)
4 Stars
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by:
2025 Kia K5
The order was easy to place. The installation was a little involved especially the hot wire from the battery. The process took a while and to get the wire to the module took a while. I was finally hooked up and only had light and left turn signals. I asked for help and received helpful hints with a couple of hour. After running through and check twice I found that the ground wire was not hooked securely and used sandpaper on the painted screw assembly and that worked. Thanks for the back up from your techs.
by:
Installing the kia k4 trailer wiring harness is pretty easy. The hardest part is running the power wire to the battery. Tested it , works great.
by:
Easy to install. It works great.
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See what our Experts say about this CURT Custom Fit Vehicle Wiring

  • Recommended Hitch and Wiring for 2027 Kia K4
    Hey Ryan, congratulations on the new K4! For a hitch we have the Curt Trailer Hitch Receiver # C47MJ. This is a Class I hitch with a 1-1/4" receiver and a bolt on installation. Then for wiring, you can use the Curt T-Connector Vehicle Wiring Harness # C34FR63HY. This plugs into the connection points behind your taillights and will provide you with a 4-way to power your trailer lights. Will you be using the hitch for towing or do you have an accessory with lights on it?
    view full answer...
  • What Trailer Hitch Will Fit a 2026 Kia K4 Hatchback?
    Hi Robert, The 2026 Kia K4 hatchback is only offered in the EX, GT, and GT Turbo models. The only hitch we have available, the Curt Custom Trailer Hitch Class I part # C47MJ, doesn't fit GT models so as long as you have an EX-model it will work for you K4 hatchback. While no drilling is required to install this hitch, you will need to lower the exhaust and trim the underbody panel or fascia to have it installed. The C47MJ is a class I hitch so it has a 1 1/4" hitch receiver tube opening...
    view full answer...

Do you have a question about this Custom Fit Vehicle Wiring?


Info for this part was:

Employee Katherine B
Edited by:
Katherine B
Employee Andy C
Installed by:
Andy C
Employee Kim H
Written by:
Kim H

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