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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
1967 Chevrolet Corvair
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CURT

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

Part Number: C55560
$38.37
Retail:$62.99
You Save: 39%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

1967 Chevrolet Corvair

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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. Connector plugs directly into existing wiring - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C55560 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.
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CURT Custom Fit Vehicle Wiring - C55560

Highlights

  • Custom Fit for Your Vehicle: Works with your vehicle's wiring
  • Tow-Ready Setup: 4-way flat connector powers trailer lights for safe night driving.
  • Plug-and-Play Install: T-connector plugs inline with factory wiring—no cutting or splicing.
  • Weather-Protected Storage: Harness stores inside cargo area so plug stays clean and dry.
  • Reliable Signal Match: Powered converter ensures vehicle and trailer lights sync correctly.
  • Easy Troubleshooting: Built-in fuse and ground wire make diagnosing issues straightforward.

Features to know about

Installs Without Splicing: Plug-In T-Connector Design

Wiring a trailer can be tricky if you have to cut into factory wiring, but this harness skips all that. The Curt T-Connector plugs directly into the vehicle’s existing wiring system for a clean, no-splice install. You just connect the custom-fit plugs behind the taillights and you’re ready to hook up your trailer lights. It’s quick, secure, and built to fit perfectly.

Keeps Connections Protected: 4-Pole Flat Stored Inside Vehicle

When not towing, the 4-flat connector stores inside the rear cargo area instead of hanging outside the bumper. You simply open the rear door, pull out the connector when needed, then close the door on the wires—they won’t get pinched or damaged. Keeping it inside protects the terminals from dirt, corrosion, and weather so your wiring stays in good condition for the next trip.

Built-In Powered Converter: Reliable Signal for Trailer Lights

The integrated powered converter ensures your trailer lights get the correct signal every time. It pulls power directly from the battery to protect delicate vehicle circuits and deliver consistent lighting performance. This setup helps avoid problems like flickering or dim trailer lights that can happen with simpler setups.

Troubleshooting Made Simple: Ground and Fuse Access Points

If a light ever stops working, this harness makes it easy to check key points. The white ground wire provides a clear grounding location, and there’s an accessible fuse on the harness itself for quick replacement if needed. Even diagnosing issues is straightforward—just follow the visible connections and test at the converter box if necessary.

Ready for Everyday Towing: Standard 4-Flat Output

The 4-way flat connector supports all essential trailer lighting—running lights, turn signals, and brake lights. It’s the standard connection used on most small and mid-size trailers, so you can plug in and go without any extra adapters or complicated wiring steps.

Specs

  • Image: Technical comparison image showing Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector and labeled components for model differentiation.

55560 CURT T-Connector - Surface Mount Technology - 4 Wire

Similar to Tekonsha 118391 and Hopkins 31235

Installation Details C55560 Installation instructions

This Product Fits The Following Vehicles




Ratings & Reviews

4.8

53 reviews
5 Stars
(46)
4 Stars
(6)
3 Stars
(1)
2 Stars
(0)
1 Star
(0)
Review Sort Icon
by:
2005 Chevrolet Equinox
The Class 3 Trailer hitch fits perfectly. The wiring kit was exactly what I needed and simply to install. That is, IF I knew the correct year of my Equinox. (The hitch was still a perfect fit) An '05 vs an '08 is a total different wire assembly connection & simpler! So I called Customer Service to arrange a hand-to-hand exchange, since they're local for me. NO BIG DEAL! Steve handled the arrangement with ease, recommending the best choice out of three to choose from. Now it is just a matter of getting this project finished. THANK YOU! Your website is awesome from a shopping standpoint. Great job on the design!
by:
I was very satisfied with the product and it fit perfectly into our vehicle and was easy to hook up to the trailer
by:
2006 Chevrolet Equinox
Hello George. The wiring installed fairly quickly. I decided to route it inside the Equinox so it took more time than usual but I'm very happy with. Just brought it to a friend this weekend and it still works flawlessly. Actually, y thought they had a wiring harness but turns out they did not. They looked one up on etrailer and will be purchasing it soon.
by:
Easy to connect, easy to mount and works as expected. Haven't used the light much as most often using hitch for bike rack vs trailer but held up well after a year.
by:
2006 Pontiac Torrent
I needed a 6 wire square harness for my camper that would hook up to my 2006 Torrent. I couldn't find this harness anywhere, so I ordered your 6 wire to wire flat harness and splice my old harness into it. It works great. Now I have a wiring hook up for my 6 wire square and a 4 wire flat both in the same harness.
by:
2006 Chevrolet Equinox
This is a great wiring harness, easy to install. I was told by my local parts provider that there was not a one step wiring harness available. I did a simple order on the etrailer site and the part came directly to my door. Thank you for your great service.
by:
The trailer light harness wad exactly what I needed. Easy to install and works flawlessly.
by:
My old trailer light converter box from another company wasn’t working so I ordered a new Curt unit from Etrailer. Easy to connect and works perfectly.
by:
All aspects of the service were great, (delivery of product, the product itself, the instructions and the fit ) I am very pleased with etrailer. Highly recommend to all. Sure is nice to deal with such professionals.
by:
2005 Chevrolet Equinox
This wiring harness is everything as advertised. Shipment arrived in just two days. I would advise anyone looking for hitches or accesssories to check out this company.
by:
The Curt Connector was a breeze to install the only down side was the double sided tape that was included for the install was so old it was no longer sticky.
by:
2006 Chevrolet Equinox
The harness plugged right in like the description and video showed. Attach the ground wire to ground stud on vehicle with 10mm socket and 12” extension. Really simple.
by:
2006 Chevrolet Equinox
Super easy to install and has worked with out a hitch.
by:
I haven't had a chance to use the product with my trailer yet but the installation couldn't have been any easier. It took me less than 2 minutes to install. Very happy so far!!
by:
Easy installation, works great. Does what it's supposed to do.
by:
2006 Chevrolet Equinox
Product is easy to install, had to wait two weeks to finally get the right product from etrailer though
by:
2006 Chevrolet Equinox
Product arrived as advertised. Videos online made installation a breeze. Highly recommended!
by:
Very good product and easy to install....Plus etrailer.com's pricing beat everybody hands down!! ????
by:
2005 Chevrolet Equinox
easy instructions works great
by:
Quick delivery, easy installation.
by:
A must have product that is an easy plug and play hookup.
by:
Great product. Could not imagine how it could have been any simpler to understand and install.
by:
Perfect fit I ordered one for y 07 Chevy equinox
Too bad it out lasted the pos car I had
by:
Top shelf! Factory fit is perfect. Function is flawless. I Highly recommend this company 7 their products! The product was everything they said it was, no exceptions taken. Thank you!
by:
2005 Chevrolet Equinox
Easy to locate desired product, product delivered quickly, easy to install. Very satisfied with product and service.
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Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Andrew K
Video by:
Andrew K
Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Nicholas E
Test Fit:
Nicholas E
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Zach D
Video Edited:
Zach D

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