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CURT

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

Part Number: C56078

93 Reviews | 17 Questions

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$53.11

Retail:$72.95

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Not Confirmed to Fit

2009 Chrysler Sebring

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Product Images

curt custom fit vehicle wiring 4 flat plug-in t-connector harness with 4-pole trailer connector

curt custom fit vehicle wiring end connector 4 flat c56078

curt custom fit vehicle wiring trailer hitch 4 flat t-connector harness with 4-pole connector

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In Use/Installed

2008 hyundai santa-fe custom fit vehicle wiring curt end connector 4 flat on a

2008 hyundai santa-fe custom fit vehicle wiring curt 4 flat plug-in c56078

2008 hyundai santa-fe custom fit vehicle wiring curt trailer hitch 4 flat c56078

2008 hyundai santa-fe custom fit vehicle wiring curt trailer hitch plug-in t-connector harness with 4-pole flat connector

2008 hyundai santa-fe custom fit vehicle wiring curt end connector 4 flat c56078

2008 hyundai santa-fe custom fit vehicle wiring curt trailer hitch plug-in on a

2008 hyundai santa-fe custom fit vehicle wiring curt trailer hitch 4 flat t-connector harness with 4-pole connector

2008 hyundai santa-fe custom fit vehicle wiring curt end connector plug-in c56078

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

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Videos

Trailer Wiring Harness Installation - 2010 Hyundai Santa Fe

Curt Custom Fit Vehicle Wiring - Trailer Hitch Wiring - C56078 Review

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SCHEDULE AN INSTALLATION

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 C56078 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.

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Reviews (93)
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CURT Custom Fit Vehicle Wiring - C56078

Highlights

Custom Fit for Your Vehicle: Works with your vehicle's wiring
Plug-and-Play Install: Connects in line with tail light wiring—no cutting or splicing.
Ready to Tow Lights: 4-pole flat connector powers trailer stop, turn, and running lights.
Reliable Signal Output: Converter regulates power for trailer lights to match vehicle signals.
Supports Safe Loads: Handles up to 2.1 amps per side for stop/turn and 4 amps total for running.
No Factory Tow Needed: Adds full trailer lighting capability to vehicles without a tow package.

Features to know about

Installs Without Cutting or Splicing: Plug-In T-Connector

Wiring a trailer can be a headache when you have to cut and splice wires, but this Curt T-Connector skips all that. The harness plugs in line with the tail light connectors, so there’s no need to tap into any circuits. Just plug it in and it’s ready for a 4-flat connection that handles running, turn, and brake lights.

Delivers Reliable Power to Trailer Lights: Built-In Converter

The integrated converter keeps your trailer lights working right by matching the vehicle’s wiring signals to standard trailer wiring. It’s rated for up to 2.1 amps per side for stop and turn lights and 4 amps total for running lights, giving solid power without overloading the system.

Hassle-Free Setup for Tow-Ready Vehicles: Works Without Factory Tow Package

Even if your vehicle didn’t come with a tow package, this harness makes it easy to add trailer lighting. It’s designed to work independently of factory tow wiring, giving you everything needed for standard trailer light functions without extra adapters or complicated rewiring.

Keeps Lighting Strong and Consistent: Clean Ground Connection

Good grounding is key for dependable signal lights, and this harness is built with that in mind. The ground strap connects to bare metal for a clean contact, preventing flickering or intermittent light problems that can happen with weak grounds or corroded connections.

Specs

Electrical Specifications

Stop and turn lights maximum output: 2.1 amps per side
Running lights maximum output: 4 amps total

Technical comparison chart of Curt T-Connector Vehicle Wiring Harness models showing connector variations and wiring configurations for trailer setups.

56078 CURT T-Connector - Surface Mount Technology - 4 Wire

Similar to Tekonsha 118415 and Hopkins HM11143835

Installation Details C56078 Installation instructions

This Product Fits The Following Vehicles

2010 - 2013 Kia Forte Sedan
2010 - 2013 Kia Forte Sedan
2007 - 2012 Hyundai Santa Fe
2007 - 2012 Hyundai Santa Fe without factory tow package

Customer Satisfaction Score:

95% were satisfied with this product

5% of customers were not satisfied

Arrived Damaged
Wrong item was ordered
Alternate product found

5% of customers were not satisfied

Arrived Damaged
Wrong item was ordered
Alternate product found

4.8

93 reviews

5 Stars		(82)
4 Stars		(10)
3 Stars		(0)
2 Stars		(0)
1 Star		(1)

by: Sidney G. 06/16/2019 One Year Later

2009 Hyundai Santa Fe

Perfect fit for my 2009 Hyundai Santa Fe GLS w/ FWD. I had the hitch assembly installed at the trailer rental place. They wanted me to buy their wiring harness that they would have to cut and splice to my wiring in the rear. I instead bought this as a much better option that plugs right into my taillight assembly. Easy self-installation. I would definitely buy again and highly recommend it.

Click to Enlarge

by: Darren 10/24/2026

Joy was great very helpful

by: Mike C. 08/26/2014

2011 Hyundai Santa Fe

I consider myself an advanced electrician/mechanic but those skills were not necessary . Product installed very easily as per the instructions and video clips I found on their website . Works as designed...excellent product . 2011 Santa Fe . 6 cyl W/O factory tow package .

Click to Enlarge

by: Doug 06/01/2026

So simple to install and works flawlessly

by: Howie K. 12/10/2011

2012 Hyundai Santa Fe

for our 2012 Hyundai Sante Fe. It arrived with the Curt hitch I ordered in excellent condition in a few days.
The wiring harness installed very easy and it is easily well hidden inside the vehicle when not in use (keeping it all clean and servicable).

The instructions are easy to follow but they are a little to general. there are numerous plastic fasteners keeping panels together that can be overlooked and cause cracking of interior panels. extreme care should be used when disconnecting panels from one another or removing them from the vehicle. I fished my wires but the printed directions say you should remove panels....risky.

All in all these products from Curt are very impressive and I'm glad these were my decision.

Mark

12/12/2014

Hi, You were able to install without removing the panels? Im not looking forward to removing the panels.Thanks,Mark

Howie K.

12/15/2014

You have to open some space to do the job neatly, but it isnt hard as long as you move slowly and dont force anything. I store the connection in the left side of the floor box, and lay it out under the hatch to the tow hitch when I need it. The weather strip is flexible enough to seal around it with the hatch closed. Look the job over first and only open up what you must. Its scarier than it really is. Good luck, make it fun

by: Tom 06/12/2020

I have to rate this as excellent at this time of installation. Everything was great with the wiring harness and the fittings were nice and tight and the connections were solid and true. How this will hold up over the long haul we will see.

Tom One Year Later

6/14/2021

The harness does not seem to be functioning correctly. I am having a problem with one of the tail lights on the trailer it will not light. I checked the ground and used the tester at the harness plug to be sure it was not the trailer and it is definitely the wiring on the car and it is the harness since there is no issue with the tail light on the car.

Brooke M.

6/20/2021

Thank you for the follow up review! I attached a link to our help article for troubleshooting with wiring. If you take a look at the article, it sounds like maybe you have a bad fuse. Hopefully this helps!

by: Carlos G. 07/08/2015

2010 Hyundai Santa Fe

I was very pleased with the electrical wiring for my 2010 Hyundai Santa Fe. It was very easy to install just followed the youtube video and it was a breeze. I feel relieved knowing that I didn't have to nip and cut any wires on my own. It was very secure and safe to install. One suggestion I would make would be to give the metal a cook sanding nothing to drastic, it works like a charm. I included a picture hopefully it helps out. I would definitely recommend getting this product.

Carlos G. One Year Later

7/7/2016

Still going strong and have not had any issues at all.

by: Randy Mack 05/11/2015

2012 Hyundai Santa Fe

purchased a couple of weeks ago, and between the video and paper instructions, the installation was a breeze. total time start to finish was about 30 mins, and everything works perfect!
Hassle free with etrailers equipment.
I'm a happy camper!

Randy M. One Year Later

5/11/2016

After one year, wiring harness is fine! Still works perfect

by: Mike W 04/14/2017 One Year Later

2012 Hyundai Santa Fe

I have had my trailer hitch and wiring on my 2012 Hyundai Santa Fe and could not be happier. It works great, and came with excellent instructions to install both the hitch and the wiring. The wiring was pretty much plug and play and the entire install took less than 90 minutes which included retapping the holes for the bolts. Would definitely purchase again from e-trailer!

by: Chris 05/08/2019 One Year Later

2014 Hyundai Santa Fe

This is the second Curt wiring harness I've purchased. The first was for a 2014 Nissan Altima. This one is for a 2011 Hyundai Santa Fe. These harnesses are so easy to install with the connectors. I have mine leading into my rear trunk box. Installation is around a half hour. No issues over the past year.

by: Jeff M 04/11/2016 One Year Later

2012 Hyundai Santa-Fe

Installation and quality is a 5 star. The only reason for the 4 star, which I struggle to give, is the wire harness must hang out the back door/trunk. The only bonus to that is, your harness does not corrode from the elements, but still slightly annoying to have it hanging out like a shirt tag.

by: Shady W. 05/27/2014

2012 Hyundai Santa Fe

I orderd a receiver hitch for my 2012 Sante Fe along with the wiring harness. The price was better than I found anywhere else and the hitch and harness arrived on time just as promised. Kourtney, the sales rep., was very helpful as well as very knowledgeable. She even sent me a link to learn more about the proper drawbar that I needed. Overall, it was a great experience and I highly recommend etrailer.

by: HaroldW. 08/24/2015

2011 Hyundai Santa Fe

Had one of these installed along with a hitch. Worked great until a tail light wire came loose and shorted against the frame. Reinstalled the wire in the tail light and replace the fuse. The tail lights worked, but the turn and brake did not. Checked the output of the module and there was only voltage for the tail lights. Ordered a new module wiring assembly and it arrived 4 days before expected delivery date. Installed it yesterday and it was really easy. The supplied instructions are simple and easy to follow. Watch the installation video before starting or if you have any problems. A flat blade and number 2 phillips screwdrivers minimum are necessary to get the job done.

by: Kevin M 08/03/2022 One Year Later

On year follow-up. Everything still working fine. As I said in my previous post, during the last year I have pulled a number of trailers without problems and the lighting package has worked flawlessly.

by: Stacy 04/24/2018

2010 Hyundai Santa Fe

I mentioned this on my review for the Santa Fe draw tite hitch. These are the best value for the money. Installs in less than 10 min and it never causes issues with the light system and doesn't cause any permanent damage to the wiring if you choose to revert back to stock and sell the vehicle without any problems! Well worth the money!

by: County Boy 08/26/2015

2012 Hyundai Santa Fe

I have not installed yet. However, delivery was good. Everything was in the box as ordered. It appears that all parts needed for installation have been included. Instructions appear to be very easy and understandable (color photos). Videos on website are a life saver. Wonderful Experience. Great website for information, prices, and installation and ease of ordering. Existing picture on site reflects package.

by: County Boy 08/26/2015

2012 Hyundai Santa Fe

by: Ash E. 06/11/2019 One Year Later

Wiring harness went in very well. I don't like the fact that I have to hang the wires and connector over the trunk to use it but this is mostly a car design issue. Good product.

by: Larry Weisman 01/07/2017

2011 Hyundai Santa Fe

The hitch and wiring I ordered were a exactly what I needed. Your website was easy to work through as far as getting the right product needed and everything installed just as easy. Delivery was also within a reasonable time. Will order from etrailer.com again.

Great product!

Larry

by: Kent 03/14/2016

2010 Hyundai Santa Fe

Check to see if your vehicle came equipped with a factory tow package before you order this. My 2010 4 cyl Santa Fe had the tow package and I didn't know or expect that it would. Tow package has a transmission cooler and a dedicated harness connection behind LR fender well.

by: Rafael 10/07/2020

Great service, installed harness in 10 minutes perfect fit!
Besides usps delivering it 2 days late.

Rafael One Year Later

10/8/2021

1 year in NO COMPLAINTS HERE!

by: Donald C 10/24/2016 One Year Later

2012 Hyundai Santa Fe

Good product. Prompt shipping. Highly recommend etrailer for all you trailer needs.

by: John P. 07/23/2013

2007 Hyundai Santa Fe

Shipping was prompt.
I installed the wiring without any problems in record time (for me).
I was able to make the connections without removing the side panels-
just the small covers on each back corner pillar and the floor tray.
Thanks for the great service.

by: Rich 06/10/2017

2010 Hyundai Santa Fe

The video sold the product. However, it was not entirely accurate. You do not have to take the knobs off each side of the panels for a 2010 Hyundai Santa Fe. Also, the sheet metal screw did not work since the metal was quite thick and I could not drive into it. I had to sand the rusteoleum away and then attach the ground into a hole already there.
The rest of it was smooth sailing installation.

by: Nick S 04/15/2015

2010 Hyundai Santa-Fe

Enclosed Instructions somewhat vague however when I viewed the etrailer video the installation took less than 15 minutes.

true

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

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

2009 Hyundai Santa Fe Trailer Wiring Harness Recommendation
The only sure way to know if a vehicle came with a tow package is to contact a Hyundai dealer with your VIN. With that info they will be able to tell if your vehicle came with the tow package. If your vehicle came with a factory hitch there is a good chance you have the tow package. Or if you find the connection point for the Curt Harness part # C56346 and test the pins with a circuit tester like part # 3808 you can verify if this harness would work. It should be right under the rear of...
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Troubleshooting Trailer Turn Signals that Only Work When Brake Pedal is Pressed
Bizzare behavior like what you described is almost always ground related. I would first start at the trailer tail light assemblies and make sure they are grounded to a clean metal surface. A lot of taillight assemblies ground through the mounting hardware, so you should check to make sure the assemblies are connected to a clean metal surface. Next check that the ground strap of the 4-way on the trailer is connected to a clean metal surface of your trailer. Lastly check to make sure the...
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Heavy Duty Flasher Needed for Trailer Turn Signals to Work when Connected to 2012 Hyundai Santa Fe
A flasher is the device that you hear clicking from under the dash when you have a turn signal on. Some vehicles do require a heavy duty flasher in order to have everything work properly. A heavy duty flasher can be obtained at an auto parts store. It will replace the stock flasher that is on the vehicle. A Hyundai dealer may also have a specific flasher for this purpose. Something else that might work, instead of going to a heavy duty flasher, is to switch the trailer over to LED lights....
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Trailer Stop and Turn Lights Not Working with Curt Wiring Harness C56078 on 2009 Hyundai Santa Fe
When there is no rhyme or reason to lights not working it is almost always a ground issue. Ground problems can do all sorts of evil things to trailer lights and what you are describing is pretty much a classic case. Since you have checked the main grounds at the converter and the trailer, we can skip those for now. Take a look at the ground connections at the tail lights themselves. Many times trailer lights ground through the mounting studs unless there is an obvious ground wire. In both...
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Troubleshooting Curt T-Connector Wiring Harness # C56078 Installation on 2010 Hyundai Santa Fe
From the issues that you are describing and the troubleshooting that you have already done, it really sounds like it is a ground issue to me. I recommend taking a piece of sandpaper and sand down the area where your ground is connected. You want bare metal to bare metal contact. Although I am pretty certain that this is the issue, please send me an email if this doesn't correct the problem and we can go over some additional troubleshooting steps.
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Trailer Lights Work Intermittently on a 2010 Hyundai Santa Fe with Curt Trailer Wiring Harness
It could be an issue with the trailer lights drawing more power than the wiring harness is rated for. But it also sounds like a ground issue. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion...
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Troubleshooting Trailer Wiring That Does Not Work with One Vehicle But Does with Other
Typically if trailer wiring works with one vehicle but not another and you know the wiring is working the issue is that there's just weak enough of a ground to cause the lighting to not work on the weaker vehicle wiring. So what you'd need to do is improve the trailer wiring ground on the trailer and you'll see the wiring start working again. I attached a help article on trailer wiring for you to check out too.
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Can I use Full Size Spare Tire 235/65R17 with a Hitch
According to my research, 235/65-17 is a stock tire size for the Hyundai Santa Fe so you should be fine since none of the hitches you reference mention that they'd be incompatible with a full-size spare tire.
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Knowing Which Wiring Harness to Use with a 2008 Hyundai Santa Fe
Either part # 118415 or C56078 will work with all 2008 Hyundai Santa Fe models. They would plug inline with the wiring harness feeding the tail light assemblies on either side of the vehicle. The Tow Ready has a slightly higher amperage rating, but other than that both wiring harnesses are very similar. I have provided links to the install details for both harnesses, as well as an install video showing the # 118415 being installed on a 2008 Santa Fe.
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Which Trailer Wiring Harness should be used for a 2009 Hyundai Santa Fe Limited
There are three wiring harnesses available for the 2009 Santa Fe. If your vehicle is equipped with the tow package, use part # 118258 that would plug into the the existing factory connector under the vehicle. If your Santa Fe was not equipped with the tow package, you can use either the Tow Ready # 118415 or the Curt # C56078. Either of these harnesses would connect inline with the factory harness behind each tail light assembly. I will link you to install instructions, as well as an...
view full answer...
Do You Have the Electrical Hookup/Brake Kit for Trailers for the 2009 Hyundai Sante Fe?
In order to install an electrical hookup with a brake controller kit on your 2009 Hyundai Sante Fe, you will need the following parts: - Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56346 (if your vehicle has the factory tow package) or # C56078 (if your does not have the factory tow package). - Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat # ETBC7 - Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles # 90885...
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Will 4-Way Connector On Curt Wiring Harness # C56078 Fit the Tow Ready Mounting Bracket # 18144
I went out to the warehouse and pull the Curt Wiring Harness, part # C56078, and the Tow Ready Mounting Bracket, part # 18144, to see if they will fit together. The 4-Way connector on the Curt harness will push into the hole of the Tow Ready mounting bracket and fit together nice and snug.
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Trailer Wiring Recommendation for a 2012 Hyundai Santa Fe
Our understanding has been that only the SE model 2012 Hyundai Santa Fe has the tow package and would be compatible with the T-One Vehicle Wiring Harness # 118521. So no, the ports on your GLS would not be active. For a wiring harness for your vehicle without the tow package that will still install pretty easily check out the Curt Wiring Harness part # C56078. These just plug inline with your vehicle taillights to install. I attached install instructions.
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Trailer Wiring Recommendation for 2010 Hyundai Santa Fe
For your 2010 Hyundai Santa Fe all you need to install trailer wiring is the # C56078 which is a confirmed fit. This is a custom fit kit so that means that all you have to do is plug the connectors in line with the taillight wiring and you'd be set. No need to tap into any circuits to activate the wiring. Just plug it in and you'd be set. Check out the install video I attached for more info as well.
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Trailer Turn Signals Work Intermittently with Trailer Connected to a 2010 Hyundai Santa Fe
First, each trailer light should have its own ground. Trailer lights normally ground through the mounting studs unless there is an obvious ground wire. In either case the grounds should be attached to clean and corrosion free bare metal surfaces. Anything between the ground connection and the light, like a plastic license plate holder for example, will cause a bad ground. On aluminum trailers, if the ground is not sufficient then you would need to attach the light grounds to the main trailer...
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Trailer Wiring, Ball Mount and Hitch Lock for 2011 Hyundai Santa Fe
We can help you with trailer wiring, a ball mount and hitch ball, and a lock to secure that ball mount in the 2-inch hitch on your 2011 Hyundai Santa Fe. If the trailer has only lights, but not electric brakes, you will need only a 4-pole type wiring harness. I suggest the Tekonsha # 118415 since we find their electrical products to be very reliable. This installs quite simply, by plugging in at the connectors behind your tail lights. At only 1000-lbs it is likely the trailer does NOT...
view full answer...
What Wiring Harness Fits the 2010 Hyundai Santa Fe Without Factory Tow Package
The Curt Class III Trailer Hitch Receiver # C13073 is indeed a correct fit for your 2010 Hyundai Santa Fe. This 2-inch hitch offers a 350-lb tongue weight rating and a maximum towing capacity of 3500-lbs. It comes complete with all required mounting hardware. I have linked the written installation instructions as well as a video showing this item being installed on your same year/make/model vehicle. Since this hitch does not come with a ball mount, hitch ball or hitch pin and clip, I suggest...
view full answer...

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Info for this part was:

Updated by:

Lindsey S

Updated by:

Wilson B

Updated by:

Kristina F

Updated by:

Isabelle B

Expert Research:

Michael H

Expert Research:

Jameson C

Expert Research:

Adam R

Installed by:

Cole B

Video Edited:

Sue W

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