bing tracking image
  1. Custom Fit Vehicle Wiring
  2. CURT
  3. Trailer Hitch Wiring
  4. Custom Fit
  5. 4 Flat
  6. Converter
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
CURT

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

Part Number: C55513
In Stock
$50.84
Retail:$82.95
You Save: 39%
Custom Fit Vehicle Wiring

Will this fit?

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

Add to cart
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

Customer Photos

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 C55513 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 (363)
  • Q & A (0)
  • Photos

CURT Custom Fit Vehicle Wiring - C55513

  • Trailer Hitch Wiring
  • Custom Fit
  • 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.


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 points at the rear of your truck
    • 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


Specs:

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


Installation

This custom-fit T-connector plugs into your vehicle's wiring harness, which is located either behind the driver's-side and passenger's-side tail light assemblies or behind the rear bumper along the frame rail.


Once installation is complete, the 4-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.


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.



55513 CURT T-Connector - Surface Mount Technology - 4 Wire

Installation Details C55513 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 - C55513

Average Customer Rating:  4.8 out of 5 stars   (363 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.

by:

So easy I did it from the ground. I found it is not necessary to unhook all of the connections and remove the taillights. It took about 30 minutes

Mike

8/28/2024

Still working as expected very high quality



by:
1996 Toyota T100 Pickup

Was purchased for my T100 and it clicked right in to OEM harness. Was able to wrap it to existing harness for a clean look, and trailers now show both running and brake lights.



by:

Super easy install. Was a breeze and didn’t take too much effort wise. Ended up covering the runs of wire with wire loom for added protection. Added this to the 4 way flat adapter and mounting bracket so I didn’t have to leave the connector hanging off the receiver.



by:

could have come with better instructions. Watched you tube for installation instructions.



by:
2010 Toyota Tacoma

Received and installed by my garage within two hours. This harness eliminated the need to cut and splice into tail and brake lights. Have not tested but confident in your products!

Allen

3/19/2024

Excellent. Basically a simple installation.



by:

Fit vehicle perfectly. Good written instructions plus a very helpful video showing the entire install, including how to separate the factory connectors.



by:
2013 Toyota Tacoma

Fairly easy to install the receiver by myself. I cheated and used a motorcycle lift to help get it in place and hold it.



by:

Perfect fit,clear instructions,fast shipping. Return customer for sure.



by:

Easy install, great price and it works wonderfully - thanks George!

Andy

8/2/2024

Ive only had to use it a couple of times, but it works great! The exposed portion of the harness where the connector is has been very resilient to the nasty weather where I live.



by:
2007 Toyota Tacoma

That's my kind of wiring. I shopped around for installing trailer wiring. Prices were as high as $100. ! This kit for my Toyota Tacoma cost $35. I loosened four bolts, drilled in a ground screw. Plug and pull wire and done. I was able to pull the wired to the far side throughout the hollow receiver hitch. Didn't even need the zip ties. Great company. Thanks



by:

Product fit perfectly and took about an hour to install. I purchased 15 feet of wire loom to protect the cables, but everything else was included. I used dialectric grease on all electrical plug-in connectors to ensure years of service.

David

7/12/2023

Wiring has been great. It was a perfect fit.



by:

Quality products, installation was well explained and accurate. Competitive pricing & quality products-- highly recommend ETRAILER!



by:
Ford Flex

Already installed, working great. Used split flex tubing to cover wires.



by:
2010 Toyota Tacoma

Received the package and noticed that the contents had shifted creating a hole through the cardboard. The hitch, hardware and wiring harness appear to be ok. Until the hirch is installed i really won't know if there are any issues.
The hitch and harness look we made.



by:

Everything fit and worked as expected. It was for my Toyota Tacoma. Zero issues as expected from etrailer. Their products, order process and support are very professional so I like dealing with etrailer over the years.

David

7/3/2023

A year later update. No issues when bought and they have been working fine since. The install was easy.



by:

The hitch looks like it will fit. ( it is not installed as of this message)
The wire harness is in and works like it should. Plug and play is wonderful.
Fast shippin good price.
Thanks.



by:
2007 Toyota Tacoma

etrailers is fast and great service!



by:
2005 Toyota Tacoma

My pickup had a new frame installed due to a manufacturer's recall. During the installation the old wiring for the trailer lights was taken out. I didn't want to pay for a commercial company to reinstall a wiring kit after I saw how easy this system was for installation. The Curt custom fit vehicle wiring was as easy to install as claimed. I have limited mechanical experience so I would say anyone who can read directions and has a few tools can do this.

Lee E.

3/5/2018

Im still very pleased with it and would recommend it to others.



by:
2013 Toyota Tacoma

I purchased a wiring harness a year ago for my 2013 Toyota Tacoma Pickup to haul my utility trailer. The installation instructions were very simple and clear. I installed the harness within an hour without any problems. It's working great when I need it and would recommend this product and any other from Etrailer. I have purchased many items from Etrailer thru the years and find the videos and other instructions very helpful with the installation. Great prices, great products and above all great support!

Gary L.

10/21/2017

its still working great. No issues at all



by:
2015 Toyota Tacoma

Wire length was perfect . Plenty of slack . The directions are inside the package and are simple . Vague on a few little parts but if you search out the answers it’s simple . The lights on my truck worked after installing just as they did prior to the job and I will test the u it tomorrow when my tester arrives , or if I just back up to my boat . I loved the included zip ties to get the wires neat , and the whip is long enough to put literally anywhere . I’d buy this again for sure . The connectors snapped in solid as I would expect for a quality product . So far a great purchase .

Scott

1/3/2022

This product failed and it was a pain in the ass to get it all worked out as far as the warranty thing goes … understandable since people scam all the time but man , I wasn’t too happy about the process . The new one works fine and has worked fine and I will for sure be getting a backup unit so if it fails while I’m on the road I’m not stranded because of an easy to fix plug and play part . It was easy to install for me … it seems to be working great at this point and I take my trailer for a drive a few times a month to keep it all working .



by:

Excellent product. I installed trailer hitch and trailer wiring harness by myself 2.25 hours. Etrailer 1st class. Fast shipping. No complaints at all.
.

John G.

4/3/2015

Excellent. Moved from Georgia to SC with truck pulling UHaul. Did Great!



by:

EZ plug and play connections.
So far
so good.
Thanks!



by:
2009 Toyota Tacoma

Could not have been easier!!!!



by:

Product was great and easy to install. As described



by:
2015 Toyota Tacoma

great product and easy to install


25
363
Show More Reviews

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

  • Recommended Hitch for a 2014 Toyota Tacoma w/out a Factory Hitch
    The etrailer Hitch item # e98850 you were looking at, is custom fit so the holes will line up on your 2014 Toyota Tacoma if you do not have a factory hitch installed. This hitch does include all of the necessary mounting hardware to complete the installation. If you have the factory hitch it must be removed and the holes will not line up. All of the aftermarket hitches for the 2014 Toyota Tacoma are the same way. As far as a video goes we only have a video of the Curt item # 13323 being...
    view full answer...
  • Will Prodigy P2 Brake Controller Work on 2012 Toyota Tacoma Without Tow Package
    Brake controllers are not vehicle-specific so the Prodigy P2 # 90885 brake controller will absolutely work with your 2012 Toyota Tacoma. Since you do not have the tow package you will need a 4-way (if you do not have one), the # C55513, and 7-way with the # ETBC7.
    view full answer...
  • What Parts Needed to Equip 2014 Toyota Tacoma to Tow Trailer With Electric Brakes
    The items needed to tow a trailer with electric brakes include the hitch, ball mount and hitch ball (that you already have), wiring harness, and brake controller with install kit. The linked articles on towing and brake controllers will give you some useful detail on these items and on towing techniques. For a hitch I suggest the Curt 2-inch Class III hitch # 13323; this will fit both X-Runner and non-X-Runner models. The installation instructions are attached along with a video and two...
    view full answer...
  • Hitch Recommendation for a 2015 Toyota Tacoma
    Yes, the Curt Hitch part # 13323 that you referenced has been confirmed to fit all models of the 2015 Toyota Tacoma so it would fit yours. I attached an install video for this product for you to check out as well. For trailer wiring you would want the part # C55513. For ball mounts I recommend the etrailer Ball Mount Kit # 989900. It comes with 2 ball mounts, 2 balls, a hitch pin with clip, and a carrying bag.
    view full answer...
  • Adding a 7-Way Trailer Connector and Brake Controller to a 2009 Toyota Tacoma with 4-Way
    Yes, you can use the 4- and 7-Way installation kit # ETBC7 with Curt trailer wiring harness # C55513 to install a brake controller on your 2009 Toyota Tacoma. I have included a couple of links that show and explain the ETBC7 installation for you. For a brake controller I recommend the P2 # 90885 because it is easy to set up and use and it is reliable.
    view full answer...
  • Parts Needed to Install a 7-way Trailer Connector and Tow a Trailer with a 2009 Toyota Tacoma
    Yes, you can install a 7-way trailer connector on your 2009 Toyota Tacoma. There's a couple of options depending on your trailer. First you're going to need to start with a 4-way flat connector like you've already found. I suggest the Curt # C55513 which plugs into your truck's wiring either behind the taillights or the rear bumper. Once you have the 4-way, if your trailer does not have brakes you can use an adapter, # 37185, to go from the 4-way to provide a 7-way. However, installing...
    view full answer...
  • Can a Trailer with a 5-Way Attach to a Vehicle with a 4-Way
    A 5-way from a trailer will attach directly to a 4-way like what is on the part # C55513 that you referenced. The fifth pin will just hang off of the edge of the 4-way and wouldn't be active. If you are looking for an adapter to go from a 4-way on your vehicle to a 5-way you would need the part # 20036.
    view full answer...
  • How To Install a 7-Way Trailer Connector On a 2005 Toyota Tacoma
    In order to install a 7-way trailer wiring harness on your 2005 Toyota Tacoma you are going to need to combine the Curt T-Connector Vehicle Wiring Harness part # C55513 with the Universal Installation Kit for Trailer Brake Controller part # ETBC7. The reason you must combine two harnesses is because they don't offer singular 7-way trailer wiring harness for your 2005 Toyota Tacoma like they do for the newer models. The wiring is not present on your 2005 model for a plug in 7-way. That...
    view full answer...
  • Trailer Hitch Recommendation for a 2009 Toyota Tacoma
    I have a much better solution for you than the Curt Hitch part # E-3S. You would want to go with a custom fit hitch instead like the part # 13323 as it will bolt directly to the frame and provide you with a much stonger and easier to install hitch than the # E-3S that would require you to use all 4 mouning holes. I attached an install video for you to check out as well. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts;...
    view full answer...
  • 4-Way Recommendation for 2015 Tacoma with 7-Way
    For what you are wanting to do the # C55513 will work. It installs by plugging inline with the factory taillight connectors of your 2015 Toyota Tacoma and will give you a 4-way that you can then use for your LED light bar. It's only listed as for "vehicles without a 7-way" because typically if you had a 7-way this wouldn't be the solution you'd be looking for. Since this bypasses all of the factory trailer wiring of your vehicle it will install and work great.
    view full answer...
  • 4-way Trailer Wiring Harness for a 2015 Toyota Tacoma
    It sounds like you are trying to add a 4-way trailer wiring connector at the back of your 2015 Toyota Tacoma that connects behind the tail lights. For that we have the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C55513. This plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail light assemblies and provides you with a 4-way trailer connector at the rear of your Tacoma. You can also add the No-Drill...
    view full answer...
  • Plug-In Trailer Brake Wiring Adapter For A 2007 Toyota Tacoma
    The Tekonsha Plug-In Wiring Adapter 3040-P does not fit your 2007 Toyota Tacoma because this is for vehicles with the factory tow package. Your only option is to hardwire the harness with the Pigtail Wiring Harness for Tekonsha and Draw-Tite Trailer Brake Controller # 20127. You're also going to need to add a 4-way # C55513 and a 7-way # ETBC7 if one is not present. I have attached a couple of videos for you to check out as well.
    view full answer...
  • Will Curt Bumper-Mount 2-Inch Trailer Hitch E-3S Fit Step Bumper on 2011 Toyota Tacoma
    According to my contact at Curt, their Bumper-Mount 2-Inch Trailer Hitch # E-3S will fit the step bumper on your 2011 Toyota Tacoma since this is a general-purpose universal-fit item. Installation hardware is included. The hitch mounting holes are spaced at 6-inches apart on center (the smaller set of holes) and on 8-3/4-inches apart on center (the larger set) as shown in the linked photo. If the spacing of the mounting holes does not match your bumper then you can drill new holes in the...
    view full answer...
    Image 1 for
  • American Made Trailer Wiring Harness Recommendation for a 2006 Toyota Tacoma
    For a similar wiring harness that is made in the USA that has been confirmed to fit your 2006 Toyota Tacoma you would want the part # C55513.
    view full answer...
  • Comparing Tow Ready 118496 & Curt C55513 4-Pole Trailer Wiring Harnesses for 2010 Toyota Tacoma
    The only significant difference between the two is the rated maximum current output on each of the circuits. Tow Ready 118496 can provide up to 2.1-amps for each of the stop/turn circuits and 7.5-amps for the running light circuit. The Curt C55513 offers a 3-amp capacity for the stop/turn circuits and 5-amps for the running lights. The Tow Ready 4-Pole T-One Vehicle Wiring Harness # 118496 and the similar Curt T-Connector Vehicle Wiring Harness # C55513 are both confirmed fits for your...
    view full answer...
  • Trailer Lights Wont Work with Headlights On
    When we have customers tell us that their trailer lights only work when the vehicle's headlights are off then this is usually a ground issue. Did you check both the trailer side and vehicle side connector? If not I would do this first and also, by check I mean you should remove each of them, sand down the surface and then reattach with new mounting hardware. A visual inspection of the ground terminal is not sufficient to check for function. The other potential cause is that the lights...
    view full answer...
  • How to Install a Brake Controller on a Toyota T100 Pickup
    It is possible to install a brake controller on your 1998 Toyota T100 pickup, but there are no custom fit wiring adapters available for that truck. The plug you found under the dash is probably not for a brake controller, but you could test the pins for power to be sure. One pin should have constant 12 volt power and one pin should only have power when the brake pedal is pressed. The other two pins should not have power at all. From the information we have, a brake controller must be hardwired...
    view full answer...
  • Troubleshooting Trailer Lights Not Working Properly with New Lights and Wiring
    While it is very possible for the converter on a Curt T-Connector like part # C55513 or # C56513 for your 2008 Toyota Tacoma to go bad, it is important to do some troubleshooting before replacing parts because if the problem isn't the converter then you're out money and time spent on the new wiring harness. To determine if the converter on your T-Connector is bad or not you need to take a circuit tester like part # PTW2992 and start off by testing the connector for signals (see attached...
    view full answer...
    Image 1 for
  • Troubleshooting Lights Dimming When Brakes are Applied with Trailer Connected 2012 Toyota Tacoma
    There are a couple issues you may be having. You may have a bad ground or short on your trailer wiring and when you hit the brakes the short causes an excessive drain on your vehicle battery and your lights dim. If you see the voltmeter on your dash dive when this happens then you know this is happening. You could have a weak battery or alternator, around here you can have those things tested at local car part stores. You may also just have too many lights on your trailer and there is...
    view full answer...
  • How To Troubleshoot 4-Pole Trailer Wiring When Your Light Functions Don't Properly Operate
    If light functions aren't properly matching up on the trailer either the 4-pole connector on the truck or on the trailer is wired incorrectly. To test the truck side you can use a circuit tester # PTW2993 on the connector and test each function (press the brake pedal, turn on either turn signal, turn on running lights) to ensure that the signal is coming through. Then you can test the trailer side to see if the functions are wired correctly to match up to the vehicle connector. Unfortunately,...
    view full answer...
  • Trailer Wiring Recommendation for a 2011 Toyota Tacoma with LED Taillights
    Since you have LED taillights you are going to want to go with a trailer wiring harness that does not draw amperage from the actual taillight circuits unlike the # C55513. Since a custom wiring kit isn't available for your vehicle you would want the part # 119250KIT.
    view full answer...
  • Parts Needed to Install a Brake Controller and 7-Way in a 2013 Toyota Tacoma
    You are on the right track. To install a brake controller in your 2013 Toyota Tacoma will first require a 4-way like the part # C55513 and then the # ETBC7 to convert it to a 7-way so that you can install the # 90885 brake controller. There isn't an plug in adapter available for your truck. To prevent the trailer from draining your truck battery you can unplug the trailer connector or you can install an isolation solenoid like part # PK5231201.
    view full answer...
  • Recommended Hitch and Wiring for a 2009 Toyota Tacoma Truck
    For the 2009 Toyota Tacoma, I recommend the Curt Trailer Hitch Receiver, # 13323. This hitch is designed to custom-fit both the standard Tacoma model and the X-Runner. This hitch is a Class III rated hitch and will have a 2x2 inch receiver hitch opening. Since your Tacoma was not wired with a towing package, then the Curt T-Connector Vehicle Wiring Harness, # C55513, is the wiring kit I recommend. This harness will connect to your vehicle using already existing wiring plugs located in...
    view full answer...
  • Parts Needed to Re-Wire European Trailer to RV-Style Trailer Wiring
    Thank you for the photo of your trailer's European wiring. You will be best served by replacing the Euro style connectors on your trailer to the RV-type. We do not offer Euro style wiring harness kits for vehicles. The part you referenced, adapter # 118710, adapts a European vehicle to a 4-pole type connector but does not adapt the trailer to match U.S. wiring. Euro wiring has every function on a separate wire; while here in the U.S. trailer wiring combines the stop and turn signals. The...
    view full answer...
    Image 1 for


< Previous
12



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


Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Lindsey S
Written by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jeff D
Installed by:
Jeff D
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video by:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B

At etrailer.com 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.


Product Experts Available Now!
Call 1-800-940-8924