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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 # C56336
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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. 1-636-306-4830 to order CURT custom fit vehicle wiring part number C56336 or order online at 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 (102)
  • Q & A (0)
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  • Why etrailer?

CURT Custom Fit Vehicle Wiring - C56336

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • Powered 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. Powered converter reduces strain on wiring system and 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
    • Locate connection points behind tail lights
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes a powered tail light converter that connects directly to your battery to avoid overloading your 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


  • Maximum amperage:
    • Stop/turn lights: 3 amps per circuit
    • Tail lights: 6 amps per circuit
  • 1-Year limited warranty


This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. You will have to remove the tail light assemblies to access this harness. Once you've plugged in the T-connector, run the hot lead 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 rear 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.

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.

56336 Curt T-Connector Vehicle Wiring Harness with 4 Pole Trailer Connector

Replaces 56198

Installation Details C56336 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 - C56336

Average Customer Rating:  4.8 out of 5 stars   (102 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.


Installed on 2016 Durango, it went well, nice product, I really liked the positive wire gauge, and quality! I added a small mounting bracket to an existing 13mm stud to mount the controller for a solid mount location. Thank you


Well unit works. The Hoppkins unit which was like 5 months old did not.

One thing to note is every other one I have installed runs the power wire down the drivers side to the unit. This means the green wire to the right rear directional is long to reach.

I reused the power wire from the Hoppkins which was on the drivers side but now the green wire is too short and the yellow and brown for the left side was really long.

No biggie just made the green wire longer snd coiled the yellow/brown and secured it. Just be aware of this. If installing the first time just run the power wire down the pass side and you are hood to go.

Dodge Durango

Generally not that difficult to install on my Dodge Durango. It helps to first watch the how to video on the etrailer web site and give yourself at least a couple of hours to do the work. There was just enough length from the right side tail light connectors to the power module. So - It's important to make sure the right side connections are securely done BEFORE anchoring the power module with the adhesive. Everything else is pretty clearly explained in the video. The overall quality of the parts seems OK.

2020 Dodge Durango

Just finished installing this morning. Read the instructions and watched the video. Those were very helpful. Although the vehicle in the video was the same as mine, 2020 Dodge Durango GT, some of the features on that vehicle were different. I did not have to lower the spare tire or the exhaust. Everything was accessible without doing so. Also did not have to trim the bumper facia. The wiring harness hooked up just as well. Instead of running the wiring on the outside of the tow hitch, I ran the wires to the left side of the vehicle through the hitch bar itself. Also was able to mount the controller up much higher and future away from the exhaust. Figured I would install the wiring harness at the same time as the hitch. Took a total of 3 hours to complete.

2018 Dodge Durango

Great product. Easy to Install, not done yet on the Durango but I installed one just like it on my Nitro. Easy install check out e trailers videos for step by step instructions!

No issues going stong.
Jonathan - 03/31/2022


Great fit and easy to install. Was able to install the stock hitch cover which is exactly what I wanted.

by: 07/26/2021

Loved the installation of this. So easy, took me 30 minutes from start to finish. Includes everything you need. I used the installation video they send you in your purchase email instead of the paper. Clean install, works great so far. Highly recommend


Easy to install. PLUG AND PLAY!

2016 Dodge Durango

The receiver was super easy to install. The light kit was a little more involved but I didn’t have to go to the dealer to “flash” the system so that was a plus. Each kit only took roughly 20-30 minutes.


works great easy to follow diretions i am vary satisfide.

2018 Dodge Durango

Hitch installed perfectly. Video was very helpful.

2019 Dodge Durango

The wiring was straight forward it was a no-brainer easy hook up


Excellent product. Fits like an OEM. Installation instructions were not very clear, but the product is wonderful.


Everything worked perfect!


Very fast shipping. Product was exactly what I needed.


Received my trailer wire harness on a Sunday USPS priority delivery. Product had clear directions and I installed it on my own in 1.5 hours. Thanks ETrailer for the fast shipping. Love your website and coustomer service. Thanks Kevin


Easy install


Exactly like the description said. Easy to use. Would buy again.

2015 Dodge Durango

I ordered the Draw Tite hitch for my 2015 Durango and the installation could not have been easier, less than 30 minutes! I also ordered a wiring harness to go along with it and as I was watching the installation video I realized I had gotten the wrong one because my vehicle came with a trailer tow prep package from the factory. I immediately called etrailer and let them know. They sent me out the correct harness and sent me the shipping label to return the other. Within 4 days I had the correct harness installed and all is good. Absolutely fantastic customer service, the way all businesses should be run. Will be recommending you to all my friends. Thanks!


Very easy to install. Zip-ties are included but you will need more. Check with your dealer/service manager before installing.

2019 Dodge Durango

I thought this would be a tedious install. Honestly routing the wires was the hardest part as I tried doing it at night. I went back out in the morning and 15 minutes later this was complete. The video for this item is very well done and shows you how to route the wire without hitting any hot spots.


fast shipping good pricing

2019 Dodge Durango

I bought A trailer hitch and A wire harness. They were shipped together and when I received the shipment the box was torn and the wire harness was nowhere to be seen and I got in touch with etrailer and they replaced it with no problem at all. I have purchased things from them in the past and if the need arises in the future I will again.


Very simple to install.

2021 Dodge Durango

Hitch fit great easy install fast shipm ent

Show More Reviews

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

  • Does 2018 Dodge Durango Need to be Flashed After Installing Curt T-Connector Wiring Harness
    The Curt T-Connector Vehicle Wiring Harness # C56336 that you referenced is designed for your 2018 Dodge Durango if it did not come with the factory tow package, but it can certainly still be installed and used on your Durango if it does have the factory tow package and wiring. Because the harness will simply connect in line with the vehicle's tail light circuits (and not with any of the factory tow package wiring) there is no need to have the computer flashed. This will work great as soon...
    view full answer...
  • Troubleshooting Trailer Wiring Harness Thats Only Putting Out 4-Volts on Running Light Circuit
    As a first step, you'll want to use your multimeter and check the voltage entering the black converter box on the input side to make sure there's 12-volts going in while the running lights are switched on. If you have the correct voltage entering, but not leaving the converter, then the converter bad and the wiring harness would need to be replaced. The most likely cause of this is a short in the running light circuit on the trailer. Before installing a new trailer wiring harness, you'll...
    view full answer...
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  • Recommended Vehicle Wiring Harness for 2014 Dodge Durango without Factory Tow Package
    The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56336 you referenced in your question is a great harness and is what I recommend for your 2014 Dodge Durango. The T-connector will plug directly into existing wiring behind the vehicle tail lights and will provide a 4-way flat trailer connector to power your trailer's signal lights. Because you are just plugging into the tail lights behind your vehicle, you should not need to have the computer reset or flashed...
    view full answer...
  • Does The Curt T-Connector C56336 Work With LED Tail Lights On 2021 Dodge Durango?
    It sure will! The Curt T-Connector Vehicle Wiring Harness # C56336 you were looking at is compatible with your 2021 Dodge Durango with LED tail lights. I included a video of the # C56336 being installed for you to take a look at.
    view full answer...
  • Does Curt Trailer Wiring Harness for 2014 Dodge Durango Have to Run to Battery
    When installing trailer wiring on your 2014 Dodge Durango like with the Curt harness part # C56336 you do need to run a power wire up to the vehicle battery. There isn't a power circuit at the rear of your vehicle you can use in place of this connection. The reason is this circuit is what powers the taillights of your trailer, and if there was a short on the trailer wiring it wouldn't damage the vehicle wiring since it draws straight from the battery instead.
    view full answer...
  • 2014 Dodge Durango Tail Lights Stay Lit with Curt Trailer Wiring Harness Installed
    The vehicle tail lights should not be lighting up with trailer wiring harness # C56336 installed on a 2014 Dodge Durango. That indicates that there is a short or power is somehow back feeding through the converter. I recommend replacing the wiring harness with # 118617 since we hear about less issues with the Tekonsha/Tow Ready wiring harnesses. I have linked a video showing how it installs for you.
    view full answer...
  • Best 4-Pole Trailer Wiring For 2018 Dodge Durango Without Factory Wiring
    Great question Fred. I recommend to use the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat part # 118617 for the 2018 Dodge Durango without a factory wiring package. The Tekonsha can handle over 1 more amp per circuit of power compared to the Curt wiring harness part # C56336 so you don't overload the vehicle's electrical system. The Tekonsha converters are also known to last longer compared to the other brands. Although both wiring harnesses will work for the 2018 Dodge Durango,...
    view full answer...
  • Trailer Wiring Harness for a 2014 Dodge Durango and Curt Class III Trailer Hitch
    The Curt trailer hitch # C13182 does fit your 2014 Dodge Durango. I have linked the isntructions and a video showing an installation on a 2012 model. Installation will be nearly identical on your 2014. For a plug-in trailer wiring harness for your 2014 Durango you can use # C56336. This harness does plug in line with the vehicle tail lights but also requires a connection to the vehicle battery. This connection powers the trailer lights and adds another level of circuit protection between...
    view full answer...
  • Will Curt Trailer Hitch Fit a 2014 Dodge Durango with Rallye Package
    The Curt trailer hitch # C13182 is listed as a fit for all models of the 2014 Dodge Durango so your Durango with the Rallye Package should not be a problem. I have linked the instructions and a video showing a typical isntallation for you. If you plan on doing some towing I also recommend etrailer ball mount kit # 989900. It comes with 2 ball mounts, 2 balls, a hitch pin with clip, and a storage bag. For trailer wiring use # C56336. This style harness plugs in line with the vehicle tail...
    view full answer...
  • Hitch and Trailer Wiring Recommendation for a 2014 Dodge Durango
    For a hitch for your 2014 Dodge Durango you would want the Curt Class III hitch part # C13182. This hitch will be largely out of plain sight on your vehicle when installed and would do a great job for towing. If you wanted to do 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...
    view full answer...
  • 2015 Dodge Durango R\T Trailer Hitch Recommendation
    The Curt Hitch part # C13182 that you referenced has been confirmed as a fit for all models of the 2015 Dodge Durango so it would work well on your R/T model. It will fit with your factory spare as well. It is recommended that you lower it temporarily to install the hitch though. If you wanted to do 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....
    view full answer...
  • How Long Does Trailer Hitch For 2017 Dodge Durango Citadel Take
    The Curt hitch part # C13182 that you referenced is a confirmed fit for your 2017 Dodge Durango Citadel. Install should only take about 30 minutes for a shop who knows what they are doing so half their hourly rate would be right. $250 would be waaaaaay too much, but maybe the Dodge hitch is much harder to install. For trailer wiring you then would want the part # C56336 which is a confirmed fit for your vehicle that does not have the tow package. If you wanted to do some towing you might...
    view full answer...
  • Towing Capacities for a 2015 Dodge Durango V6
    I checked the owners manual of your 2015 Dodge Durango V6 and the towing capacities depend on the transmission style. For light duty RWD models and AWD light duty models the capacity is 3,500 lbs trailer 350 lbs tongue weight. For standard RWD and AWD models the capacity is 6,200 lbs with 620 lbs tongue weight. For a hitch for your vehicle you would want the Curt Class III part # C13182 that has been confirmed as a fit and has more towing capacity than the vehicle would. This means that...
    view full answer...
  • Recommended 4-Way and 7-Way Wiring for 2022 Dodge Durango
    In order to get a 7-way connection on your 2022 Dodge Durango you will need to start by adding a 4-way. I recommend the Tekonsha T-One Vehicle Wiring Harness # 118617. We have found the Tekonsha wiring harness to be the most reliable. This will plug into existing wiring and give you a 4-way for trailer signal lights. Once you have installed the 4-way, you will need the Universal Installation Kit # ETBC7. This kit comes with an adapter, wiring, and everything else you need to get your...
    view full answer...
  • Least Visible Hitch Recommendation for a 2014 Dodge Durango
    In my opinion the Curt Hitch part # C13182 would be less visible than the Draw-Tite part # 75713. If you look at the picture I attached you will see that the Hidden Hitch has a more of the cross tube visible as well as the mounting brackets. The Curt only has the curved cross tube that comes down and is visible. For trailer wiring you would want the Curt Harness part # C56336. For ball mounts I recommend the etrailer Ball Mount Kit # 989900. It comes with 2 ball mounts, 2 balls, a hitch...
    view full answer...
    Image 1 for
  • Trailer Hitch and Wiring Recommendations for a 2015 Dodge Durango
    I will be happy to compare the wiring harnesses for you. Tekonsha wiring harness # 118617 and Curt harness # C56336 both install and function the same way on your 2015 Dodge Durango. The Tekonsha harnesses have proven to be the most reliable but Curt recently redesigned theirs so I would say they are on par with each other. If it were me I would use the Tekonsha harness. I have linked a video showing an example installation for you. Hitch 87608 is actually a discontinued Hidden Hitch brand...
    view full answer...
  • Is Drilling Required to Install Trailer Hitch on 2017 Dodge Durango
    Nope, you sure won't. There is absolutely no drilling required to install a trailer hitch on your 2017 Dodge Durango, it is a complete bolt-on installation. I recommend the Draw-Tite # 75713 because it will fit even if you have a full-sized spare tire under your vehicle, unlike the option from Curt. For wiring which will give you a 4-way connector and allow you to power your trailer's lights you need Wiring Harness # C56336 if your Durango does NOT have the factory towing package. If...
    view full answer...
    Image 1 for
  • Best Option for Trailer Wiring Harness on 2021 Dodge Durango
    The Curt Class III hitch, part # C13182 would be an excellent choice for your 2021 Dodge Durango. For a wiring harness, I'd recommend the Tekonsha # 118617 as they seem to be a bit more reliable in the long term compared to the Curt # C56336 harness. For a ball mount, I'd recommend part # 2753 and # 19260 for a 1-7/8 or # 63845 for a 2 inch trailer ball. I've linked to installation videos for the hitch and wiring I recommended.
    view full answer...
  • Will Draw-Tite Max-Frame Trailer Hitch 75162 Fit 2018 Dodge Durango
    The Draw-Tite Max-Frame Trailer Hitch Receiver # 75162 fits the 2004-2009 Dodge Durango. It is not confirmed to fit the 2018 Durango like yours. For a hitch that fits your 2018 Dodge Durango I recommend the Draw-Tite Max-Frame Trailer Hitch Receiver # DT38MR. This is a Class IV hitch with a 2" receiver. It installs behind the rear bumper so it will be completely hidden with the bumper panel in place. If you plan on doing some towing, you can use the Curt T-Connector Vehicle Wiring Harness...
    view full answer...
  • Curt T-Connector Wiring for 2018 Dodge Durango Without Factory Towing Package
    Yes, the Curt T-Connector # C56336 that you referenced is exactly what you want for your 2018 Dodge Durango without the tow package. If you don't already have a trailer hitch then I recommend going with the Curt Class III # C13182 which is easy to install and will allow you to keep your spare tire installed under the vehicle if it is the 18" size. We also have the Draw-Tite # DT84MR which looks much more sleek when it is installed but this is a pretty difficult installation and actually...
    view full answer...
    Image 1 for
  • Does Curt Hitch Fit 2018 Dodge Durango?
    Yes, the Curt # C13182 is a confirmed fit for the 2018 Dodge Durango. It is a class III hitch with a 5,000 lb towing capacity and 750 lb tongue weight capacity. If you are looking to tow and need to add a 4-flat the correct harness is # C56336; for a ball mount you would want # C45030 along with either 2" hitch ball # 63845 or 2-5/16" ball # 63847. The pin can clip you need is # C21500. I've added links to video reviews of these products for you to take a look at.
    view full answer...
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  • How to Install Prodigy P3 on a 2015 Dodge Durango Without Tow Package
    That is a bit confusing as to why Dodge would have the plug installed on your 2015 Durango for the Adapter # TK93VR if your model didn't come with the tow package. Since it didn't come with the tow package you need to hardwire everything. Basically just plug the Universal Wiring Kit # ETBC7 into your Curt T-Connector 56198 (replaced by part # C56336) and then route the wiring to your battery and cab for your Tekonsha Prodigy P3 # 90195 brake controller. Unless Dodge has already run the...
    view full answer...
  • Parts Needed to Install 7-Way on 2021 Dodge Durango
    We can help you install a 7-way on your 2021 Dodge Durango but since your vehicle did not come with the factory tow package you will need to start with a 4-way like the # C56336 which is a confirmed fit and then use a 7-way adapter like the part # 37185 if the trailer does not have trailer brakes or part # ETBC7. Then for a brake controller the Brake EVN # TK63VR would be a great option. Your trailer hitch from the 2017 Durango would also fit your 2021 like the part # e98901.
    view full answer...
  • Which Hitch and 7 Way Wiring Harness for a 2021 Dodge Durango GT
    I have a solution for you, but there is not a package with all of these parts offered so you'll need to get the individual parts. I'm also skeptical that there is room to fit a 7 way trailer plug in the opening left by removing the knockout panel; the 4 way fits without issue, but you'll likely need to find a mounting location below the bumper for the 7 way connector because of its' size. With that said, you can use the Draw-Tite # DT38MR and it will fit right behind the knockout panel,...
    view full answer...

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Info for this part was:

Employee Mike L
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Expert Research:
Jameson C
Employee Lindsey S
Edited by:
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Employee Jeff D
Installed by:
Jeff D
Employee Joshua S
Video Edited:
Joshua S
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Employee Wilson B
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