bing tracking image
  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
2017 Nissan GT-R
CURT

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

Part Number: C66RV
In Stock
$41.96
Retail:$55.99
You Save: 25%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

2017 Nissan GT-R

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C66RV 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 (8)
  • Q & A (0)
  • Videos (3)
  • Photos

CURT Custom Fit Vehicle Wiring - C66RV

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

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required.


Features:

  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection point behind driver's-side rear bumper
    • Plug in T-connector
  • Comes with dust cap for 4-way flat connector


Specs:

  • Maximum amperage:
    • Stop/turn lights: 7.5 amps per circuit
    • Tail lights: 7.5 amps per circuit
  • Limited 1-year warranty


Installation

This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the driver's-side rear bumper. You will have to lower your muffler to access this harness.


Once installation is complete, the 4-way connector will be stowed in an out-of-the-way location within your rear cargo area.


It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.



56538 CURT T-Connector - 4 Wire

Installation Details C66RV 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 - C66RV

Hi, everybody, Andy here with etrailer.com. Let's take a real quick look at this CURT T-Connector Vehicle Wiring Harness with 4-pole flat trailer connector. Now, at the time of the recording of this video, this has been designed to fit your 2025 and newer GMC Acadia and then your 2025 Buick Enclave, and then your 2024 and newer Chevrolet Traverse. On custom-fit parts such as this wiring harness, go ahead and take advantage of our Vehicle Fit Guide here at etrailer.com. Just input the year, make and model of your vehicle and our Fit Guide will confirm that this will work for you or if we have something comparable that will work for you. It is possible that this could work with like the newer Enclave, so again, just confirm the fit with our Vehicle Fit Guide.

So, obviously, this is going to give you the 4-pole flat trailer connector, the back of your vehicle to power your trailer signal lights. This is also going to be compatible with your five, six, and 7-pole adapters. Those adapters are sold separately. And what I like about this harness is this is going to connect real quick, real easily. You're not gonna have to worry about cutting wires or splicing wires, you're just gonna locate the connection point behind the driver's side rear bumper and plug this in.

This does come with a dust cap for the four-way flat connector, so as you can see, it's gonna cover up those connection points when they're not in use. You are going to receive two 10 amp fuses, cable ties to secure any slack in your wiring, and an instruction sheet to guide you through the installation and operation. 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.

.

Customer Satisfaction Score:

Ratings & Reviews

5.0

8 reviews
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required.

by:
2025 Buick Enclave

As the Curt Industries website indicates, this is the correct 4-pole wiring harness for the 2025 Buick Enclave. Unfortunately, I ordered another harness that etrailer said would fit, but it did not work. Once I had the correct harness, it installed easily and works perfect.



by:

I have not used it yet as I don’t have a trailer hitch. However, shipping was fast and the attention to detail in tracking is the best. I’ve bought a trailer hitch for my previous car and everything went smooth as described. I trust them 100% with their products!



by:
2024 Chevrolet Traverse

Plug and play trailer connector. Perfect fit on 2024 Chevrolet Traverse. Installed at the same time as hitch.



by:
2025 Buick Enclave

Fast an efficient service



by:



by:
2025 Buick Enclave



by:
2024 Chevrolet Traverse



by:


8
8

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

  • Recommended Trailer Hitch and Wiring for 2025 Chevrolet Traverse
    Hi Kim; I can definitely help you get your 2025 Chevy Traverse ready to tow a trailer. You will need the hitch, wiring, and a ball mount. I recommend the following for a complete setup: -Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # C97RV -Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C66RV OR -Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector # C76RV -etrailer Ball Mount w/ Pre-Torqued 2" Ball # e67DR You will need to...
    view full answer...
  • Is Power Converter Needed for Trailer Wiring Kit on a 2024 Chevy Traverse
    Hey Claudio! No, you do not need a power converter for the Curt T-Connector Vehicle Wiring Harness # C66RV to work on your 2024 Chevy Traverse. This just connects to your OEM wiring and you may or may not need to install the fuses that come with it and you'll be good to go!
    view full answer...
  • Trailer Hitch and Wiring for 2025 Buick Enclave
    Hey Paul! The Curt # C97RV and # C66RV are the correct parts to set up your 2025 Buick Enclave for towing. It looks like you already figured out that the # C56394 will also fit and save you a bit of money since you placed an order with this instead. We haven't had a 2025 Enclave come in for us to install these yet and make a video so I don't have anything showing the specifics of that fascia removal. Do you already have a ball mount? If you don't, you will also need a ball mount like...
    view full answer...
  • What 4-Way For 2025 Buick Enclave to go With Trailer Hitch
    Hi Dan, There is a 4-way wiring harness for your 2025 Buick Enclave to go with the Curt Trailer Hitch Receiver # C97RV. The correct fit for that is the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C66RV.
    view full answer...

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


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Joshua S
Video Edited:
Joshua S
Employee Dustin K
Video Edited:
Dustin K
Employee Wilson B
Updated by:
Wilson B
Employee Katherine B
Updated by:
Katherine B
Employee Michael B
Updated by:
Michael B
Employee Aidan B
Test Fit:
Aidan B
Employee Jesse B
Test Fit:
Jesse B
Employee Andy C
Installed by:
Andy C
Employee Sabrina W
Written by:
Sabrina W
Employee Ethan H
Video by:
Ethan H
Employee Matthew G
Video by:
Matthew G

At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


<