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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 # C55567
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Custom Fit Vehicle Wiring

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Curt Custom Fit Vehicle Wiring - C55567
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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. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance. Call 800-298-8924 to order Curt custom fit vehicle wiring part number C55567 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 (76)
  • Q & A (18)
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  • Why etrailer?

Curt Custom Fit Vehicle Wiring - C55567

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

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system and 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
    • Locate connection points in rear cargo area
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer
    • Powered module connects directly to battery to avoid overloading vehicle's electrical system
  • 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: 6 amps per circuit
  • Limited 1-year warranty


Installation

This custom-fit T-connector plugs into your vehicle's wiring harness, which is located in your rear cargo area. You will have to remove interior trim paneling to access these connection points. Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery.


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.


Powered Tail Light Converter with Surface-Mount Technology

A tail light converter is built into this T-connector. This converter is a circuit-protected, battery-powered unit that bypasses the electrical routes that are used by a basic wiring harness. As a result, there is virtually no draw on your tail light circuits.


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.



55567 CURT T-Connector - Surface Mount Technology - 4 Wire

Replaces Curt C56204

Installation Details C55567 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 - C55567

Average Customer Rating:  4.7 out of 5 stars   (76 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. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.

- C55567
by:

Broke after a few months 744842



- C55567
by:

Prompt delivery and easy install. Lights operate perfectly. Thanks 914888



- C55567
by:

Satisfied about the product and the quality of it , the instructions and the videos In the website made it easy to install, The only thing I suggest is to extend the wire connection cables because it was short. 896809



- C55567
by:

I have always been very satisfied dealing with e-trailer. Ordering is easy, delivery is quick and the product is as advertised. The staff is knowledgeable, helpful and sticks with you through installation. 862105



- C55567
by:
2015 Toyota Camry

Plug and play! How could it be easier? 858083



- C55567
by:

The custom trailer wiring kit C55567 is absolutely one the best products i've ever bought for my car. It was super easy to install works great with my jet ski trailer. will definitely recommend this product!! 850363



- C55567
by:

Worked well, easy to install, appears well made. 830258



- C55567
by:

No review on the product just yet , the box was damaged and need to determine if there are missing parts or other damage ... Will circle back to etrailer with appropriate pictures updates etc... 816021



- C55567
by:
2014 Toyota Corolla

Product installed exactly as described by etrailer.com. difficulty level was spot on, videos helped, and notes on requirements were accurate. I have ordered fom them before and their website makes it very easy. Product was packed very well and shipping was quick. 807888



- C55567
by:

Wiring kit installed OK. Works fine. 802371



- C55567
by:
2018 Toyota Corolla

I just installed in my 2018 Toyota Corolla. Plugging it into the tail lights was very easy, but having to run the power wire up to the battery was a bit of a pain. The kit came with everything needed to install it and the YouTube video was very helpful also. I tested it after install and everything works but I haven’t towed a trailer yet. -Mark G. 796684



- C55567
by:
2014 Toyota Corolla

Fantastic product! So simple even a child could install. 795885



- C55567
by:
2015 Toyota Corolla

Very easy installation took me less than 25 minutes. Note to people installing it them selfs. Just run a power cord inside the vehicle along the side wall underneath all of the molding. There’s enough room for a small screwdriver to lift the molding to hide the wires. I ran mine through the firewall were there were already wires going to the front of the car. I did not like the idea of poking a hole through the rubber grommet especially being in New York that’s just a recipe for water moisture and disaster for your spare tire wheel well. But very well constructed 783110



- C55567
by:

UPS lost my order. I talked with someone from E Trailer, they got to the bottom of the situation, got another shipped, got it this morning. Great Job!! 727693



- C55567
by:

Awesome product. I have had it for a year and I have been very happy and satisfied with its performance. I definitely recommend it. 715304



- C55567
by:

Easy to install, work perfect 715193



- C55567
by:

Very happy with purchase. Looks great and is functional. I am using it with a bicycle carrier and a small utility trailer. 696310



- C55567
by:

Works as advertised first try. 675003



- C55567
by:

Quality harness at a very reasonable price and fairly simple to install. I highly recommend etrailer.com. 665699


Comments
Perfect! Never had a problem with my setup. Works like a charm!
Sheryl C - 07/03/2020

85882

- C55567
by:

Easy to install with great instructions and video. Was daunting when I learned I needed to run the power wire to the front of the car but was a lot easier than I thought it would be. Works great and hides easily by the spare tire. Thanks! 665180



- C55567
by:
Mazda

Installing the Draw-tite hitch on my girlfriend's cute 2014 Mazda 3 was a breeze after studying the videos. No need to remove the muffler or raise up the car at all. After having the mounting bolts in place using the handy wires and resting the hitch on about 8" of wood blocks, my girlfriend helped in keeping the hitch steady while I bolted it onto the car. It took us about 25 minutes in all. Then came the wiring nightmare. The first part involving the connectors to the car's tail lights was fast and simple. The second part which involved sneaking the included power wire out of the trunk, through the car, then through the engine firewall and into the engine compartment was enough to drive a good man bad. Honestly, especially when meaning to only tow a small trailer with about four lights on it, is it really necessary to go directly to the battery as a power source??? And I wasn't about to run the power wire along the underside of the car. Anyway, after spending about an hour trying to figure out how I was going to sneak the supplied power wire through the engine compartment firewall, I got out my drill, picked a drill bit slightly wider that the wire, bore a hole on the driver's side and into the engine compartment, hooked the wire to the battery using the supplied wired fuse, sealed the drilled hole with the supplied black silicone sealant, put the car back together, and finally was done. As I wrote, installing the hitch took 25 minutes to complete. Installing the wiring was a four hour drama I'm so relieved to be done with I'm having a double shot of rum in my rum punch, and after that I'm having another one. I'm giving this four stars because after all that install time the trailer lights work just fine. I just wish the install hadn't wound up being such a nightmare. 661289



- C55567
by:
2018 BMW M6

This wiring harness was a fairly easy install on a 2018 Mazda 3 HB Sport. Wiring to the lights is very simple with only removing 3 panels in the hatch and easily hidden. Running 12 volts to the unit is the hardest part. Although the instructions indicate it must be connected directly to the battery I did not like the idea of having a hot wire running on the outside of the car or making a hole through the firewall. For a Mazda 3 a simple way to provide power is running the positive wire to the fuse box in the driver's side foot well. There is a 10 amp fuse for the sun roof and I just used a low profile mini Add-A-Circuit product to provide power. My model does not have a sun roof so there is no overload issue but it is easy enough to not open/close the sun roof with trailer lights on. The added bonus here is that it is only powered when in ACC or ON so any trailer wiring issues will not drain your battery. This probably voids some warranty but since the circuit is fused at 10 amps it is identical to the instructions and just as safe. For ground I just used the already tapped M6 point that is there for factory hooks. Installed this way no permanent modifications have been made to the vehicle. 635980


Comments
The primary reason why the wiring harness is set up to pull the power for the trailer taillights directly from the vehicles battery is to protect the vehicle from short circuits that might occur in the wiring on the trailer. Connecting the harness according to the instructions serves to keep the trailer wiring fully isolated from the delicate and expensive to repair vehicle wiring. The fuse in the power wire itself is designed to protect the taillight converter from a short in the power wire, not to protect the vehicle from shorts.
-- Mike L - 05/01/2019

54743

- C55567
by:

Easy to install and works well 635534



- C55567
by:

Works great, directions were easy to follow, I just wish my hands were smaller! Ha Ha. I’ve used it a dozen times and when not in use it stores easily in the side panel and you don’t have to worry about it dangling behind and getting torn off. Great product. Thanks! 606972



- C55567
by:
2018 Mazda 3

The hitch and brake light harness installed without issue and works flawlessly. 604333


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Ask the Experts about this Curt Custom Fit Vehicle Wiring

  • Correct Curt 4-Pole Trailer Wiring Harness for a 2008 Toyota FJ Cruiser
    The correct Curt T-Connector Vehicle Wiring Harness for a 2008 Toyota FJ Cruiser is part # C55567, there are no other types of trailer wiring harness options for this vehicle such as ones that plug into a single port. I confirmed this with Curt for you.
    view full answer...
  • Installation of Power Wire for Curt T-Connector Wiring Harness on 2014 Mazda 3
    The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C55567 uses an in line fuse that is 10 amp max. It is recommended to install power wire directly to battery, so any installation even though it may work as you referenced would void the manufacturer's warranty. I've attached the installation details to assist.
    view full answer...
  • Routing the Power Wire for Trailer Wiring on a 2007 Toyota Camry XLE
    In a situation where there is no obvious or easily accessible route through the firewall into the engine compartment on a vehicle, you will have to drill a hole. You have to be careful not to drill through anything that is on the other side of the firewall. After you drill and route the wire through, make sure to seal up the hole using silicone to keep out moisture and fumes. I have included a link to an FAQ article with tips on routing the power wire that you might find useful.
    view full answer...
  • Troubleshooting Potential Overload on Curt Wiring Harness for Taillights Not Working
    If the draw of your taillights and side clearance lights combined exceeds the 6 amp maximum, it is quite possible the converter box did short circuit. Short circuiting at the box is the way the harness protects from overload. It is also important to note that the harness' 12V power wire must be connected directly to the vehicle's battery, through the supplied fuse holder, not to an auxiliary 12V power source elsewhere on the car. If you find that the taillights and clearance lights...
    view full answer...
  • Does Curt Trailer Wiring Harness part # C55567 Fit 2014 Mazda 3 Hatchback
    The trailer wiring harness part # C55567 fits a number of vehicles actually. One of them is the 2014 Mazda 3 like what you have so it will work well for you.
    view full answer...
  • Brake Controller Recommendation for a 2011 Toyota FJ Cruiser with 4-Way Installed
    The Curt Wiring harness part # C55567 that you have in your 2011 Toyota FJ Cruiser will provide the trailer lighting functions, but to activate the trailer's brakes you will need a brake controller and the part # ETBC7 that comes with everything needed to wire up and install a brake controller plus convert the 4-way to a 7-way. For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works...
    view full answer...
  • Both Turn Signals Blink & Running Lights Not Working w/Curt Wiring Harness on 2007 Toyota FJ Cruiser
    Let's first make sure everything is in the right spot and none of the pins are damaged on both your 2007 Toyota FJ Cruiser and Curt wiring harness # C55567. Unplug the harness and check both its connectors and the vehicle connectors. Look for any broken or bent pins because these can cause a short. If all the pins look good then make sure the connectors with the yellow, red, and brown wires are plugged in behind the driver's side tail light and the green on the passenger's side. If any...
    view full answer...
  • Curt Wiring Harness for 2016 Toyota Camry Hybrid
    According to Curt the wiring harness # C55567 does fit your hybrid model of the 2016 Toyota Camry. I've linked a video of the install on a 2012 Camry which is a similar process. The install details are also linked. If you need a trailer hitch as well part # C12107 is the correct fit for your Camry and the recommended ball mount is part # C45017. The ball mount fits hitch balls with a 3/4 inch shank so part # A-82 is the correct 2 inch ball and part # is the correct 1-7/8 inch. ...
    view full answer...
  • Trailer Hitch and Wiring Harness for a 2012 Toyota Camry Hybrid
    For a 2012 Toyota Camry Hybrid you can use Curt trailer hitch # C12107. I have included a link to the instructions for you. This hitch comes with the proper ball mount, pin and clip. For a 1-7/8 inch ball use # 19256 and for a 2 inch ball use # 19258. For trailer wiring use # C55567 that you have referenced. I have linked instructions for it as well.
    view full answer...
  • Is Curt Trailer Wiring Harness # C55567 Compatible with LED Trailer Taillights
    The Curt trailer wiring harness part # C55567 is perfectly compatible with LED trailer lights!
    view full answer...
  • Can Dirt Bike Carrier be Used on a 2014 Toyota Corolla LE
    Since dirt bike carriers are designed to carry heavier loads all of them have 2" shanks. All of the trailer hitches available for your 2014 Toyota Corolla have a 1-1/4" receiver and so the only way you'll be able to transport your '95 Honda CR125 with your Corolla is to use a small trailer. It is worth noting though that the online owner's manual for your vehicle states that Toyota doesn't recommend towing a trailer. If you don't have any other vehicles to accomplish this with and you...
    view full answer...
  • Hitch Recommendation for a 2007 Toyota Camry XLE
    There are 2 hitches available for your 2007 Toyota Camry XLE with a V6 and dual exhaust, the Curt hitch part # C12343 and the Draw Tite hitch part # 36416. I would recommend the Draw-Tite part # 36416. For trailer wiring you would want the Curt wiring harness part # C55567 and then for a hitch ball I would recommend the 1-7/8 inch ball part # 19256 or 2 inch ball # 19258.
    view full answer...
  • Trailer Wiring Harness Recommendation for a 2014 Toyota FJ Cruiser
    For trailer wiring to go along with the Curt Hitch part # 13367 that you installed on your 2014 Toyota FJ Cruiser I would recommend the Curt Wiring harness part C55567. I attached installation instructions for this harness for you to check out as well. For how to pick out the correct ball mount check out the FAQ article I attached to right.
    view full answer...
  • Parts Needed to Pull a Utility Trailer with a 2016 Toyota Corolla SE
    The least expensive trailer hitch receiver for your 2016 Toyota Corolla is the Curt part # C11265. It's a custom designed hitch that bolts right onto your car without any drilling. All of the installation hardware is included and I've linked an install video for you. The ball mount recommended for your Corolla with the Curt hitch is part # C45521 with pin and clip # F-4 to secure it to the hitch. It takes a hitch ball with a 3/4 inch diameter shaft like part # A-80 if you need a 1-7/8...
    view full answer...
  • Hitch Recommendation for a 2015 Toyota Camry
    A hitch that came off of a 1999 Toyota Camry would not also fit a 2015 Toyota Camry. The vehicles are different enough that a new hitch design would be required. The hitch you will want is the Curt Hitch part # C12107. The correct trailer wiring would be part # C55567. If you also need a ball mount you would want the # C45017 and then for hitch balls # 19256 and # 19258.
    view full answer...
  • Installing Curt Class I # C11377 on 2014 Mazda 3
    We have not yet had the opportunity to install a hitch on a 2013 or 2014 Mazda 3, so we don't have any video footage of a hitch install. If you click on the provided link, you can see a copy of the instructions that includes some full-color photos. I've looked over the install procedure, and it doesn't look too involved. I'll link you to some help articles that will assist with the installation, including how to use a fish wire, and how to lower the exhaust from the exhaust hangers. If...
    view full answer...
  • Trailer Hitch and Wiring Harness for Towing Small Utility Trailer With 2014 Toyota Corolla
    The Curt Class I hitch, part # C11265 does not require removal of the appearance panel on the bottom of the vehicle or trimming or other alteration of the bumper fascia. It will require that the tow hooks be removed. The recommended ball mount is # C45521 and the pin and clip is # F-4. Both the 1-7/8 inch trailer ball # 19256 and the 2 inch ball # 19258 are sold separately. Curt offers a plug and play trailer wiring harness that's compatible with your Corolla, part # C55567. You can...
    view full answer...
  • Curt Wiring Harness Recommendation for a 2013 Toyota Camry Hybird
    I just spoke with the technical department of Curt and they recommend the Curt T-Connector Vehicle Wiring Harness # C55567 for your 2013 Toyota Camry. The Curt Upgraded Circuit Protected Tail Light w Converter Hardwire Kit # C56496 is a universal style trailer wiring harness that you could probably make work, but you would be much better off going with the # C55567 as it is more of a plug and play harness. I attached installation instructions for this product for you to check out...
    view full answer...

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Info for this part was:

Expert Research:
Michael H
Expert Research:
Jameson C
Video Edited:
Jeff D
Video Edited:
Jacob T
Video Edited:
Dustin K
Video by:
Joshua S
Video by:
Chris R
Test Fit:
Randy B
Test Fit:
Ryan G
Updated by:
Sarah W
Updated by:
Kristina F
Updated by:
Isabelle B

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