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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 # C55513
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Custom Fit Vehicle Wiring

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Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector 4 Flat C55513
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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. Call 800-298-8924 to order Curt custom fit vehicle wiring part number C55513 or order online at etrailer.com. Free expert support on all Curt products. Guaranteed Lowest Price 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 (207)
  • Q & A (28)
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Curt Custom Fit Vehicle Wiring - C55513

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

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 Reviews

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C55513

Average Customer Rating:  4.9 out of 5 stars   (207 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.

- C55513
by:

All good 698765



- C55513
by:
2009 Toyota Tacoma

Great quality and made in America. 693665



- C55513
by:
2015 Toyota Tacoma

could'nt have been easier, I had wired my 92 toyota pick up and with solder and splicing wires it took me about 2 hours, with this kit for the 06 tacoma I was done in 15 min if you got the money buy it!!! 615907



- C55513
by:
2010 Toyota Tacoma

Arrived in just a few days and easy to hookup on my Tacoma 883020



- C55513
by:

877009



- C55513
by:

Perfect fit, perfect product 871747



- C55513
by:
2012 Toyota Tacoma

Arrived on time, was super easy to install, and works great. I'm extremely pleased. 870895



- C55513
by:

Great product and very easy to install. 864492



- C55513
by:
2009 Toyota Tacoma

Very easy install and works perfect 859569



- C55513
by:

Excellent. Was installed in less then an hour and works great. 845016



- C55513
by:
1997 Toyota T100 Pickup

just received product hope to install tomorrow. happy so far 844602



- C55513
by:

A super straightforward way to add trailer wiring to my truck. Great product at a great price. 830197



- C55513
by:

This wiring harness was easy to install and the instructions provided took all the guess work out of the installation process. I would highly recommend this product if you are installing a hitch and need the wiring. 809772



- C55513
by:

Great product! 809291



- C55513
by:

Product was good and easy to install, might mention in a new video that in older Tacoma's the lower bolts on the tail light assembly break trying to remove them, it's the plastic that breaks. Possibly carefully loosen and oil the bolts first 800078



- C55513
by:

Exactly what I needed! Still going strong a year later and almost daily use!! 779216



- C55513
by:

Great kit made installing hooking up at the wiring a simple job on my 09 Tacoma. 773567



- C55513
by:

Hitch and wiring kit arrived quickly and was very easy to install. Who knew my Tacoma's frame was pre-drilled with bolts in place. I took my sweet time and got it installed in about 3/4 of a cigar. Fit and finish was perfect and it looked very sturdy and nice - like it came with the truck. A year later everything is rock solid and performing perfectly. I see no corrosion on the hitch framework and have had no issues with the light harness. If you need a hitch - you've come to the right place. 770065



- C55513
by:

The products that I purchased from you were exactly what you advertised,it was shipped promptly and packaged professsionaly. The trailer hitch went on perfectly, easily, it looks and works great. The wiring harness was the same way. I just watched your video that you have online and followed the instructions. I had no problems what so ever. The video"s were the biggest help. I would without a doubt buy for you people again. Thank you very much! P.S. I would send pictures but we are having a blizzard right now. 761872



- C55513
by:

great product, easy install 737663



- C55513
by:

everything with the order came through in great shape! now we just have to put it the truck. will order again with confidence. thank you 714645



- C55513
by:

Excellent purchase. Installed easily, fitted to my truck perfectly. I would purchase this product again. Well designed and high quality. 703871



- C55513
by:

This hitch fit like a glove, delivery was fast installation was easy. The electrical hook up worked great. Very good products, I will buy more from etrailer.com 698529



- C55513
by:
Toyota

I installed the item on a 2017 Toyota Hilux. All the connectors worked perfectly. The length of the wires to the right tail light were just a little short, so I extended them. This may not have been necessary, as I decided to route the wiring high in the frame and very out of the way of everything. Great Product.... All is working well after a year.. 697115



- C55513
by:

Very happy with my etrailer, trailer harness Easy to use information and instruction. Light duty install. Works great. 681401


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Show More Reviews

Ask the Experts about this Curt Custom Fit Vehicle Wiring

  • 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...
  • 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...
  • Trailer Lights Don't Work When Headlights are On
    The problem you are having is a classic ground issue. If the ground wire to the trailer frame or the tail light grounds are not connected securely to clean, rust and paint free surfaces then when the headlights are turned the extra amperage draw for the running lights will cause all sorts of lighting issues. I would start by removing the ground wire at the trailer coupler and cleaning up the connection point and re-securing it to the trailer frame. Next I would check the ground connection...
    view full answer...
  • Troubleshooting 4-way Flashers on Trailer
    Most likely the problem is a weak ground on the trailer wiring. When your hazards are on all of the trailer and vehicle turn signals will be activated at the same time so a bad ground could prevent the lights from working. Check the condition of the grounds of each trailer light assembly and the condition of the main ground from the trailer wiring harness to the trailer frame. Make sure all grounds are made to a clean bare metal surface. Also check that the white ground wires on Curt...
    view full answer...
  • 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...
    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 # 119190KIT.
    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...
  • Dash Lights Flashing with Turn Signals Using Curt Trailer Wiring harnes # C55513
    This sounds like a bad ground problem. Make sure that the wiring harness converter box is attached to a non-painted clean and corrosion free bare metal surface. Also make sure that the 4-Way on the vehicle and trailer sides are free of corrosion. To determine if there is something wrong in the converter box you will need a circuit tester like # PTW2979. You will need to test the wiring going into the converter first. If it is not correct then you know there is a problem with the vehicle...
    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...
    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...
  • 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...
  • 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...
  • 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 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...
    view full answer...
  • Recommended Trailer Brake Controller for 2015 Toyota Tacoma Towing 13-Foot Scamp Trailer
    Our customers have told us again and again with their purchase decisions and product reviews that the Tekonsha Prodigy P2 trailer brake controller, part # 90885, is easy to set-up and operate and is supremely reliable. This is a superbly engineered brake controller that is a snap to use. Installation method will depend on whether or not your Tacoma has a factory-installed 7-way trailer connector at the rear bumper. If you do have a 7-way then installation will require only the controller...
    view full answer...
  • Trailer Hitch Recommendation for a 2015 Toyota Tacoma
    Yes, the Curt Hitch part # 13323 that you referenced has been confirmed to fit your 2015 Toyota Tacoma so I would recommend it for you. I attached an install video for you to check out as well. If you plan on doing some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also includes a 1-7/8 inch ball, 2 inch ball, hitch pin with clip, and a storage...
    view full answer...
  • 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...
  • Will the Reese Multi-Tow 7-Way and 4-Way Trailer Connector Fit a 2012 Toyota Tacoma
    The Reese Custom Fit Replacement 7-Way and 4-Way Trailer Connector, # 74682, will fit your 2012 Toyota Tacoma if it came with a factory 7-way. This is a replacement for the OEM 7-way trailer connector for the Tacoma. If your Tacoma did not come with a factory installed 7-way trailer connector, then we will need to go a different route. If your truck does not have any trailer wiring installed, then you will first want to install a 4-way flat trailer connector. For this, I recommend the...
    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...
  • Using Optronics # TLL9RK Trailer Light Kit on Trailer Towed by 2005 Toyota Tacoma
    The # TLL9RK kit you mentioned is designed to be used to replace rear stop/turn/ taillights and the wiring on a small trailer. The kit features a 4-pole flat trailer connector designed for use with a 4-pole connector installed on a vehicle. If your Tacoma has a factory installed 4-pole connector, it should be converted already. If not, the Curt # C55513 trailer wiring harness would be a plug and play option that would plug inline with the factory connections behind the drivers and passenger...
    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...
    view full answer...
  • Trailer Hitch, Wiring & Related Towing Items for 2012 Toyota Tacoma
    Curt 2-inch Class III hitch # 13323 is a confirmed no-drill hitch fit for your 2012 Toyota Tacoma. This hitch fits both X-Runner and non-X-Runner versions and it includes the hardware you'll use for its bolt-on installation into the truck's existing frame weld nuts. An installation video is linked for you. For a 4-pole trailer wiring harness you can use Curt # C55513 which is a simple plug-and-play installation with no cutting or splicing of wires required, as shown in the linked video. You...
    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 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 # TR118665.
    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...
  • Wiring Compatability Of Stainless Steel Trailer Hitch Step LED With 2014 Toyota Tacoma
    The Pilot Stainless Steel Trailer Hitch Receiver Step with LED Lights for 1-1/4" and 2" Hitches, # CR-605LED, is a fit for your hitch and will direcly plug into a 4-Way flat trailer connector. If you truck doesn't have the factory 4-way, but has a factory 7-way, you would use an adapter like the Pollak 7 Pole to 4 Way Connector Adapter # PK12716. If you do not have a factory trailer connector, you can add a 4-way very easily with the Curt T-Connector Vehicle Wiring Harness with 4-Pole...
    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...




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Info for this part was:

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

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