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

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

Item # C55502
Our Price: $35.50
You Save: 41%
Custom Fit Vehicle Wiring

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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. Converter is made using SMT to ensure superior performance. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C55502 or order online at 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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  • Reviews (105)
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  • Why etrailer?

CURT Custom Fit Vehicle Wiring - C55502

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • Converter
  • CURT

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. Converter is made using SMT to ensure superior performance.


  • 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 points in rear cargo area
    • Plug in T-connector
  • Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer
  • Constructed using surface-mount technology (SMT) for consistent, reliable performance
    • Maximizes trailer light yield and intensity while producing minimal heat
    • Ensures superior operation in rough road conditions
  • Comes with dust cap for 4-way flat connector


  • Maximum amperage:
    • Stop/turn lights: 3 amps per circuit
    • Tail lights: 5 amps per circuit
  • Limited 1-year warranty


This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the driver's-side interior trim panel in your rear cargo area.

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

Tail Light Converter with Surface-Mount Technology

A tail light converter is built into this T-connector. Because most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your vehicle's three-wire system need to be combined so they are compatible with the wiring system of the trailer. This converter combines the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your vehicle operate.

Curt builds each tail light converter using surface-mount technology (SMT). This method of construction involves soldering electronic components directly to the surface of a printed circuit board. SMT eliminates the need for leads, which are used in older through-hole technology. The result is a circuit board that is smaller yet provides more routing area and that offers superior performance, reliability and durability.

Curt SMT Circuit Boards

Circuit boards constructed using SMT have been shown to perform better under rough conditions with excessive vibration than those made using the through-hole method. And where would vibration be more likely to occur than in towing applications? Curt converters also produce less heat, leading to increased durability and longer life. In addition, lower levels of resistance ensure better performance, especially for parts that operate at higher frequencies.

Each Curt circuit board is made using high-quality components that are pieced together in the most technologically savvy fashion, leading to greater predictability and reliability in functioning.

55502 CURT T-Connector - Surface Mount Technology - 4 Wire

Installation Details C55502 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C55502

Average Customer Rating:  4.9 out of 5 stars   (104 Customer 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. Converter is made using SMT to ensure superior performance.


Awesome and super easy to install - fits and works perfectly in my 2012 Honda Accord and confident that the install is secure. Completely satisfied with this product. Picture shows what the CURT Hitch and T-Connector allowed me to attach to the Honda - trailer has 1720 lb weight capacity - so my reliable honda turns into a 3/4 ton pick up when needed.


The harness truly is plug and play, no splicing or cutting wires, lots of slack in the wiring loom to route it behind the trunk panel neatly and cleanly. It's worked without issue for nearly a year now. I'd recommend this product


I’ve ordered wiring and a hitch off of etrailer and I have nothing to say but great things. Spent a long time looking for a hitch for my car and I was happy to finally find one that bolted on within 20 minutes and couldn’t have been easier to order.

2012 Honda Accord

Hitch and wiring are good quality, shipping was very prompt, pricing best I found searching around...

Additionally instructions were clear and complete.
I am very satisfied with my purchase, and my dealings with eTrailer.

the wiring harness works like a champ. Very tidy, and not asingle issue. I use it several times a year when Im hauling my motorcycle to the track.
Rich. L - 01/18/2018


Takes a little effort and patience. But with good directions I got a great result.

2010 Honda Accord

Great product. This one utilized the reserved tow light connector on my Accord, unlike other products (they have long green wire) that need to take off both liner to access left and right signal wires, I just need to take off the left liner and every socket you need is there.


I searched everywhere. I could find a harness for my car but not one with the plugs. I did not want to cut up a perfectly good harness in my car if I didn’t have to. The manufacture’s website showed they made them but none were available. From now e trailer will be my first stop.

Easy to install. Done in 30 minutes. No problem. Been using it for a year or so. Still no problem.
Charles - 08/18/2021

2010 Honda Accord

I had it installed on our Honda Accord V6 2010. Works great.

2008 Honda Accord

Easy install and works as expected.

2010 Honda Accord

Product worked as expected. I called customer service to ask a question about the part ordered. Blake was able to verify i ordered the correct wiring kit for my hitch. I feel confident each time I do business with etrailer. Great job folks at etrailer!

As expected
Thomas - 05/24/2019


Great product, price, and easy install. Thanks.


Parts were as described and fast delive ry



2010 Honda Accord

This product work exactly like it was supposed to it was easily install with plug-in it took me about 10 minutes to install on my Honda Accord. Thank you etrailer

Stop working 2 weeks after installation
Douglas - 05/03/2021


As outlined in my hitch review I also purchased etrailer's wiring harness. Make sure you find a video on utube that shows you how to remove the back trunk panels. It would be eazy to break the plastic mounting pins. I found one that showed how in a video on attaching a wiring harness. It was a easy as one two three. Just unsnap each of the three tailights from their factory plugs, replug each of the wiring plugs on the wiring harness and replug the factory plugs into the wiring harness.additional leads. You cannot plug into the wrong one as each is unique to its own. Place a couple of tie downs on the harness to anchor it. I placed the end of the harness plug into my spare tire well, replaced the trunk panels and job done. When I need to plug in the harness to my trailer I just lift my spare tire cover, pull out the desired length to reach the traile plug and close the trunk lid.

2012 Honda Accord

the hitch and harness kit fit the car and the cars factory wiring harness flawlessly, much easier than i ever dreamed. shipped quickly and the price was good. I will get my next hitch from e-trailer


Great product and simple instructions.
easily within the time frame suggested.
Works great to hold my bike rack and tow a small trailer.
The wiring harness was easy to install and instructions were great.


Watch the video on eTrailer on the install -- the included paper instructions are pretty confusing, but installation is VERY EASY. Really nice that the connector hides in the spare tire and just hangs out the trunk when you need it (rather than drilling through the floor to store the connector outside the car). No soldering, no cutting wires, just plug in and reattach your trunk panel. The first time doing this took ~15 minutes, but now that I know where everything is you could easily do this in 5 minutes.

2010 Acura TSX

This did not fit my 2010 Acura TSX. 95% of it fit, but I did not have a plug for the right directional (the single green wire) on my car as the instructions said. So, I ended up tapping into the directional wire in the cars wiring harness (also green) with a quick splice wire tap. That worked fine, and only held me up a bit. I don't know what model car this one does fit, but it's not a 2010 Acura TSX.

2008 Honda Accord

Easy to install and shipped quickly! Only disappointing thing is it disables your driver side reverse light if you connect it to the harness. I left it unplugged since my trailer doesn’t have reverse lights.


I received this receiver about 5:00 PM only three days after ordering it. I called the customer and he delivered his car at 7:00 PM. I installed the the receiver, the taillight converter and wiring, called the customer back and He picked it up ready to tow his trailer by 8:15 PM. That is amazing. Flawless fit and function. That is how to satisfy a customer.

2006 Honda Accord

Wiring harness was easy to install, watch the videos on the site, they help. Would recommend to anyone...2 thumbs up!!!

2009 Honda Accord

Good quality,good price, easy to install and works well. Always satisfied with etrailer products.

Holding up just fine after a year of use. Very satisfied!
Russell T - 03/21/2018

2011 Honda Accord

Trailer hitch much easier to install than instructions look like, lights are plug and play!


Hitch and connector arrived in great shape.. Huge box.. thought you sent the wrong one.. It's frozen here in Ohio and I hav'nt installed it yet
I'll let you know .. Laura did a great job for me on the phone.. Give her a raise.. Ty Moore in Ohio

Show More Reviews

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

  • Trailer Wiring Harness Comparison for the 2005 Honda Accord 4 Door Sedan V6
    Both the Tow Ready T-One Wiring Harness, # 118302, and the Curt T-Connector Wiring Harness, # C55502, are essentially the same wiring harness and will provide the same function. I normally recommend the Tow Ready Harness because we sell these the most and do not have any issues with this harness, we also have a video installation of this harness for you to review.
    view full answer...
  • Wire Length and Connection Points for TowReady Trailer Wiring Harnesses # 118302 and # C55502
    Both the Tow Ready # 118302 and the Curt # C55502 trailer wiring harnesses that fit your 2004 Honda Accord Sedan will make all three required plug-in connections at the drivers-side tail light. You can see the installation process in a 2006 Accord in the linked video. None of these wires needs to reach over to the passenger side which is sometimes the case with wiring for other vehicles. Each of the three connectors' wiring is approximately 15-inches long, plenty to make the necessary connection...
    view full answer...
  • Comparing Curt Trailer Wiring Harnesses for a 2008 Honda Accord LXP Sedan
    For your 2008 Honda Accord sedan if it has LED tail lights then harness # C56175 is not recommended. Plus it is a hardwire harness that requires cutting and splicing into the vehicle tail light wiring. Harness # C55502 is a much better option. It will work with your Accord and just plugs in line with the vehicle tail light wiring.
    view full answer...
  • Correct Curt T-Connector Vehicle Wiring Harness for a 2003 Honda Accord
    The correct Curt T-Connector Vehicle Wiring Harness for a 2003 Honda Accord Sedan is part # C55502. The correct Curt T-Connector Vehicle Wiring Harness for a 2003 Honda Accord Coupe is part # C56053.
    view full answer...
  • Trailer Wiring Harness for a 2013 Honda Accord Sedan with LED Tail Lights
    For your 2013 Honda Accord sedan with LED tail lights, the correct trailer wiring harness is Tow Ready harness # 119147KIT. I have included a link to the installation instructions for you to view. I have also included a link to an FAQ article with tips on routing the power wire.
    view full answer...
  • Troubleshooting Wiring Harness Installation for a 2005 Honda Accord
    First manually test the 4-Way on the Accord with a circuit tester like # PTW2993. Test each pin on the 4-Way individually, one at a time, while you have a buddy activate the corresponding function in the Accord. Make sure you get power at the appropriate pin and that you aren't getting power on the others. You will want to inspect the 4-Way itself for any debris or corrosion that might be built up around and inside the pins, cleaning out as needed. Also try and inspect any wiring that...
    view full answer...
  • Will Trailer Tow Wiring Harness Work As Flat-Tow Wiring Harness for 2003 Honda Accord
    It sounds like you are looking for a flat-tow wiring harness for a 2003 Honda Accord and if that is the case we have plenty of options but trailer tow wiring harnesses like the Curt T-Connector Vehicle Wiring Harness won't work. Instead, I recommend the Roadmaster Universal Hy-Power Diode Wiring Kit part # RM-154. There are unfortunately no plug-in-play options. If you already have a trailer wiring harness installed, this won't cause any issues for the flat-tow wiring harness but it won't...
    view full answer...
  • Where Does a Tail Light Trailer Wiring Harness Install on a 2013 Honda Accord
    For a 2013 Honda Accord you should be using Curt wiring harness # C56011 or Tow Ready harness # 118420. I have included a link to the installation instructions for you to view. The connectors on the right side should be directly behind the trunk panels and trim that you have to pull out of the way just like on the drivers side. The Curt harness # C55502 only goes up to the 2012 Honda Accord.
    view full answer...
  • Curt Trailer Hitch for a 2010 Acura TSX Sedan
    There seems to be some sort of mix up because trailer hitch # C11085 is designed to fit the 2011 to 2014 Acura TSX Sport Wagon, not the sedan. The proper hitch for a 2010 Acura TSX sedan is # C11496. And it does appear to stick out a bit as you can see in the video I have linked. If you plan on doing some towing the correct ball mount is # C45521. For a 1-7/8 inch ball use # 19256 and for a 2 inch ball use # 19258. For trailer wiring you can use # C55502.
    view full answer...
  • Needing a Draw Bar to Fit the Curt Trailer Hitch # C 11327 on a 2004 Honda Accord
    The Curt Draw Bar # C45520 is an 1-1/4 inch draw bar that will fit the 1-1/4 inch receiver opening on he Curt Trailer Hitch, # C11327 that fits the 2004 Honda Accord. The Curt draw bar will hold a ball that has a 3/4 inch shank diameter. if you need a ball that has a 3/4 inch shank, then for an 1-7/8 inch ball use # C40001 and for a 2 inch ball use # C40018. The Curt T-One Connector # C55502 is the confirmed trailer wiring harness for he 2004 Honda Accord Sedan. I recommend when installing...
    view full answer...
  • Recommended Curt Class I Trailer Hitch Receiver for 2005 Honda Accord
    You are correct in how the Curt Trailer Hitch Receiver -Class I - 1-1/4" # C11290 is mounted. This hitch has been tested to hold a maximum tongue weight of 200 lbs and a maximum trailer towing weight of 2,000 lbs when loaded. A riding lawn mower on a small trailer is probably at close to the maximum capacity of this hitch, so I recommend calculating the weights before doing this as your owners manual states 1000 lbs towing max and 100 lbs tongue weight. For your trailer wiring, I recommend...
    view full answer...
  • Recommended Trailer Hitch Receiver and Wiring for 2011 Honda Accord Sedan
    The Curt Trailer Hitch Receiver - Class I - 1-1/4" # C11085 is a fit for the 2008-2012 Honda Accord Sedan or Coupe models. For a ball mount I recommend # C45521 along with pin and clip # F-4. Then you simply need to add the hitch ball like # A-82 for a 2 inch option or # A-80 for a 1-7/8 inch diameter option. Then for your trailer wiring, I recommend the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C55502. This custom-fit T-connector plugs into your Honda...
    view full answer...
  • Class I Trailer Hitch Installation on 2007 Honda Accord Sedan
    The Curt Class I hitch # C11327 is a confirmed fit on the 2007 Honda Accord Sedan. It also fits the 2-door Coupe for model years 2003 through 2007. It will require some drilling and minor heat shield modification. I have linked an installation video as well as a helpful article to aid your hitch installation. In this hitch you can use Class I accessories like a 2-bike rack such as # S64670 or a cargo carrier like # C18145. If you plan to tow you'll also need a wiring harness # C55502...
    view full answer...
  • Correct Towing Products for a 2011 Honda Accord
    The part 116813-56173-40001 can be broken down into a few different parts. The first 6 digits (116813) are the same as a Class I Curt trailer hitch and it will only fit a 2013 - 2017 Honda Accord. The next 5 digits, same as part # C56173, is a wiring harness that fits a 2013 - 2017 Honda Accord. And the last 5, same as part # C40001, is only a 1-7/8" hitch ball but it would fit the ball mount that comes with the trailer hitch mentioned above. If you have a Sedan or Coupe then the Curt...
    view full answer...
  • Parts Needed to Flat Tow a 2006 Honda Accord Behind a Motor Home
    Regular trailer wiring harnesses will not work in reverse. they are designed to fail if that is done to protect the vehicle wiring from damage if there were a short circuit on the trailer. You will need a kit specifically designed for flat towing. You can use a diode kit such as # 154-792-118158. You will also want to consult your vehicle owners manual on the proper procedure for towing the vehicle. If you need base plates on your 2006 Accord use # 1545-1 if it is not a Hybrid. For...
    view full answer...

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