Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
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Curt/
Custom Fit/
Trailer Hitch Wiring/
4 Flat/
Powered ConverterItem # C56181
Retail:$91.09
Our Price: $59.95
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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.
Features:
Specs:
Note: This wiring cannot be installed if your vehicle has a rear air conditioning unit.
Installation
This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind your tail lights. To access these connection points, you will have to remove your rear scuff panel. 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 in 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.
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.
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.
Installation Details 
2013 - 2017 Chevrolet Traverse
2018 - 2018 Chevrolet Traverse Limited
2013 - 2017 Chevrolet Traverse without factory connector
2018 - 2018 Chevrolet Traverse Limited without factory connector
California residents: click here
Video of Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today we're going to be taking a look at part number C56181. This is the Curt T-Connector Vehicle Wiring Harness with a 4-Pole Flat Trailer Connector. This product is going to fit certain years of the Chevrolet Traverse. It's going to provide the your 4 way flat trailer connector to power your trailer's signal lights. The benefit of a system like this is that it's going to connect quickly and easily. All you have to do is locate the connection points in the rear cargo area.
Then you're going to have these snap lock T-connectors to plug into place. You just plug them into the other ends of the connections. They're going to snap into place for nice, tight, secure fit. Your white wire is going to have a ring terminal attached to it. This is going to be your grounding wire. It's going to come with a self tapping screw that way you can secure it in a nice, clean out of the way area.
Once you have your T-connectors plugged in, then you'll need to run the hot lead to the vehicle battery. The hot lead's going to be this black wire here. It's going to connect to the bundle of black wire. It's going to give you plenty of length of wiring to run all the way up to the vehicle battery. All the necessary butt connectors are included to make those connections.
Then the other end of the black wire gets connected to the fuse holder. Fuse holder's, excuse me, included as well. That's going to get connected with a butt connector. Then other end of the fuse holder's going to get a ring terminal attached to it and then that's going to get connected to the positive post on the vehicle battery. Then you take the included fuse and put it inside the fuse holder. The block box right here, this is going to be your power tail light converter.
This is going to connect directly to the battery through the wiring and that's going to avoid overloading the vehicle's electrical system. It's going to be constructed using surface mount technology for consistent, reliable performance. What that does is it maximizes the trailer light yield and intensity while producing minimal heat. It's also going to ensure superior operation, even in rough road conditions. Here on the 4 ways connector, you can see we've got plenty of wiring. It's also going to come with the dust cap that way we can protect the connection points when they connector's not being used. The overall unit's going to be constructed in the USA. When it comes to the maximum amperage for the stop and turn lights, we're looking at 3 amps per circuit and for the tail lights we're looking at 6 amps per circuit. To get the converter box mounted in an out of the way location, it's going to come with some double sided adhesive tape. That's all going to be included in this little packet right here. You're also going to get some very detailed instructions. These are going to walk you through the installations process step by step. Very detailed, they've also got some pictures in there to help you know exactly where your connection points are. You're also going to notice in the package it's going to include some zip ties. That's going to be to secure and excess or slack in your wiring. It's going to really clean up the installation. A special note we need to mention is that this wiring cannot be installed if your vehicle has a rear air conditioning unit. The custom T-connector is going to plug into the vehicle's wiring harness. That's going to be located behind your tail lights. One you plug in the T-connectors, again, you're going to need to run the hot lead to the vehicle battery. Once you have everything complete, once your installation is done, the 4 way flat connector is going to be stowed in an out of the way location in the rear cargo area. Then we're always going to recommend to use a small amount of grease on all electrical connections like the 4 way flat connector on the plug and on the automobile plug. That's going to help prevent any type of corrosion from settling in to the connection points. That's going to do it for our review of part number C56181. This is the Curt T-Connector Vehicle Wiring Harness with a 4-Pole Flat Trailer connector. .
Average Customer Rating: 4.7 out of 5 stars (47 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.by: Bill C06/02/2015
Very easy to install in less than 20 mi nutes 199990
I am very pleased and is why I continue to come back to your company and refer as much as possible..
Bill C - 06/17/2016by: M-squared10/01/2015
As with all tasks around my house, I have to do things myself. Installing this 13424 receiver hitch on a 2015 Chevy Traverse LTZ was no exception. The biggest challenge was loosening the dual muffler rubber hangers, 2 per side. The other issue was how to hold this 25-50lb receiver hitch with one hand while screwing in the bolts. By creating a third hand, the whole process took me about an hour. Fit beautifully, well made and solid. Fun part - the carriage bolt fish wires. Just need to have the wiring harness installed by a professional. Did that myself on an old vehicle and some years later sent my dashboard lights into a tizzy because the device got wet and shorted. I would buy a CURT product again. 228646
by: CLYDE WHITE03/19/2017
THE HITCH WAS VERY TO INSTALL TOOK MAYBE 15 MINUTES THE WIRING ON THE OTHER HAND WAS NOT TOOK IT OUT OF THE BOX AND TRIED TO FOLLOW THE INSTRUCTIONS IT WOULD HAVE TAKEN QUITE SOME TIME TO INSTALL. SO I GOT A HARNESS FROM THE GM DEALER AND IT TOOK 5 MINUTES TO INSTALL. SO NOW I HAVE A HARNESS I CAN NOT USE. THE HARNESS THAT WAS SENT I WOULD HAVE TO TIE RIGHT AND LEFT SIDE TOGETHER GLUE SOME MODULE TO PANEL AND THEN RUN A WIRE UNDER THE CAR ALL THE WAY TO THE ENGINE COMPARTMENT. THE HARNESS FROM THE GM DEALER WSA PLUG AND PLAY . LIKE I SAID IT TOOK MAYBE 5 MINUTES 355628
by: Richard N.12/14/2016
I bought this wiring harness after watching the installation video on the Etrailer website. I installed this in my driveway with the use of my floor jack. It took about an hour for me to install it. It was easy to install and it worked without flaw the first time. Great product! Great company! Thanks! 325006
by: Justin T.04/19/2015
Almost easy to install. Pictures and instructions were easy to follow except when running wire to right hand light assembly. Directions tell you to do the same as left side but I was unable to because of the blower unit. Ended up running wire out the same hole as the right side and under truck to other light assembly. Also would have been nice to know that the battery wasn't in the engine compartment (on me not manufacturer). Once in worked great. Took me about 1.5hrs to install. 186226
by: BW09/07/2018
Easy install 2013 LS FWD. I had no issues after following the video. The only thing they did not show was having to unbolt part of the battery box heat shield to gain access to the battery vent. I went the extra mile by installing 1/4 harness wrap on the green wire through the bumper rail and the positive all the way to the battery box. There are some sharp edges under the body that could cause a short over time with no protection. I also purchased the 4 plug tester. All is good. 562358
by: John01/21/2019
Exactly as pictured and what I ordered. Arrived early very satisfied. 599306
by: Zak01/20/2019
I started with a "this will work kit" from my local parts store...turns out it was only for a Traverse that comes with towing package, which I do not have...out $40. Next I stumble across this harness from etrailer... exactly what I needed! Quick shipping and super great instructions with photos specific to install to my traverse...all the way down to which screws to turn. Plugs into the taillights plus a hot wire from the battery. 599059
by: Joseph10/30/2018
Curt makes great trailering products and etrailer.com makes customer service a breeze. Installation was simple and took less time than I guessed. The available installation video was spot on for how to get the job done. Well done to etrailer. 578645
by: David07/11/2018
These guys are really good. 540350
by: William06/19/2018
The functionality of this unit is great! The installation video and instructions are lacking. Several direction steps were not hard they simply were impossible. If the part about most vehicles have the trailer wiring tucked up the side would have been great to know before we purchased. Also a description of what to look for would have been a help also. 523985
by: John06/06/2018
The wiring harness itself it really great. My vehicle did not have a factory trailer wiring harness. This one did take about 4 hours to install. I have no lift, so I used my jack to lift the right rear off the ground to crawl under the car to run the power wire to the battery. My vehicle also has the rear AC and ventilation controls which makes the right rear side too difficult to access the wiring grommet, so I routed all the wires out the left side and spliced the right directional wire (green) going to the right side to gain the extra length I needed. Beyond that I would suggest using some plastic spiral insulation around the wires to protect them against sharp edges of the metal body. 518065
by: Kevin06/01/2018
After I removed the crap that the trailer rental place installed, my trailer lights worked perfectly. Took me about 30 minutes to install. 515589
by: Kent06/01/2018
Easy install, however my first wire harness the control box stopped working after 2 months of use. Just installed my new harness. too early to tell if this will fail as well. 515100
The most common reason a converter box fails is a short circuit in the trailer wiring. Youll want to closely examine the wiring on your trailer, beginning at the trailer connector and working backwards tracing each circuit until you reach each lamp. Look for loose connections or pinched wires. Closely examine the plastic insulation on the wire, looking for cracked or worn insulation that would allow the copper wire to short out on the trailer frame. If there is a short somewhere in the trailer wiring, youll continue to fry converter boxes until the short is located and repaired. Ill link you to a help article that contains lots of good information about troubleshooting trailer wiring systems.
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Mike L - 06/01/2018by: Scott03/13/2018
Takes a little time to install, but works great. Online installation videos are very helpful, easy to do. 484426
by: Jody02/27/2018
Super videos on etrailer's YT page. Product installed very easy. 479381
by: Stanley02/01/2018
A perfect fit for my 2013 Traverse. No modifications were necessary. Thanks again to CrystalS for all her help. Give that girl a raise. 471834
by: Bruce01/05/2018
I bought a trailer hitch for my Chevy Traverse and it went on easily and works well, however the trailer light package burned out in November 2017. It blew fuses and I could smell hot plastic. I did not find any shorts in the wires, it may have been the plastic "black box" part of the wiring harness. I have since replaced it with the type of harness that plugs into the plug by the left rear fender. I also purchased that from etrailer. Hope it works. 464978
The majority of the time when a converter box shorts out, the cause is a short circuit somewhere in the wiring on the trailer. Begin by checking the trailer connector, look for damage or corrosion. Trace each circuit rearward looking for pinched or broken wires. Check that all connections are secure and protected from the weather. Carefully examine the wire insulation, look for worn or cracked spots that would allow the copper wire to contact the trailer frame or other metal and cause a short. Youll want to located and repair the short before replacing the taillight converter, or youll continue to blow out converter boxes.
-- Mike L - 01/05/2018by: Easy install09/16/2017
Vary good product. I wish I would have seen the factory connection on the vehicle first. Watch all the videos etrailer puts up on their page first. My fault. 432940
by: Joseph v09/15/2017
fast and great product 432728
by: L Phil Hunt07/23/2017
Installation not too difficult and it works great! 409714
by: Chris06/26/2017
The wireing harness was super simple to install. The online video gave me the confidence I needed! 399167
by: Timmy A06/01/2017
The sales person was helpful. The product works great. 387282
by: Tom H05/11/2017
Everything fit as expected. 379164
Still working fine.
Tom H - 05/11/2018by: Ken p05/01/2017
The curt wiring harness lasted one year then the left side shorted out and blew the fuse for my left running lights on the car.had to buy another one.i hope it lasts longer or i will have to go another way. 375009
by: Jeff04/05/2017
order and deliver items in 3 days as promised. Great service 363370
by: Jerry03/30/2017
I am 82 years old, it took me a little longer to get it done but went in an tested fine. The hardest was to get the wire into the battery box. 360566
by: Robert01/26/2017
Super fast delivery, and excellent quality. Customer service cannot be any better. Could not ask for more from a business. 335565
by: Jk01/11/2017
Installed easy as pie and as usual etrailer is an amazing site. Easy to find things and, support is great, and staff is super helpful and friendly. I won't go anywhere else for my towing accessory. needs 334760
by: Uhv12/14/2016
Good. Exactly has detalied works great 325061
by: Larry N12/02/2016
I am very satisfied with this product and have not had any problems with it for over a year of using it, good product at a good price. thanks etrailer 321670
by: Joe D11/28/2016
Fit perfectly. Well within manufacturing specs. No challenge by the Chevy Dealer garage on installation and since this is a plug in/bolt on with no cutting no warranty is broken. 320130
by: Scotta11/17/2016
Excellent fit and finish, coupled with ease of installation (a lift would have made life a lot easier). 317631
by: Steve R.11/06/2016
We installed a tow package on our 2001 Jeep and our 2014 Chevy Traverse. Both were easy to install and have worked flawlessly as advertised. I personally would purchase from E-trailer again. 314349
by: Mark B08/31/2016
Product arrived as promised. Perfect transaction and GREAT communication with fast, easy delivery. Will continue to buy from in the future!!! 289513
by: Paul T08/16/2016
Seeing as I leaped (and ordered) before I looked, my new Traverse was equipped with a hitch. etrailer's customer service rep Lisa guided me through the process of making a return. She was so very helpful. I give etrailer a 5 star rating, because this is my third order from them and they always supply the best products, at best prices, and now I applaud there customer service. I will return again when ever a need arises. They are the first I turn to. 284318
by: Jmartini08/07/2016
I bought the draw tite trailer hitch and the t connector 4 way flat wiring harness for our 2014 traverse. It was very simple and easy to install. No issues as of now and I will be using it to tow our camper in a few days. 281066
by: Brad07/20/2016
Great product, installation was a breeze. I changed a few things like running the green passenger side wire through the rear bumper tube and instead of running a wire all the way to the battery I was able to splice into the power going to the rear power outlet. This outlet has 20 amp fuse feeding it under the hood so the 10 amps needed for the trailer wiring should never be a problem. Use only a few tools to install(knife, wire stripper/cutter, small screw driver, and a nut driver). Very high quality kit with online videos to walk you through the process. Took me an hour to install on my garage floor. 273965
by: Bill P06/28/2016
Exactly what I wanted, but some of the wires were short. I had to splice in extensions. 266044
by: Alonzo P.06/02/2016
Everything I needed was provided in the wiring kit. Installation instructions were easy to follow. The only thing I found in error was the location of the battery which was shown to be under the hood, it is located in the floor behind the passenger seat. 255813
by: Joci T04/13/2016
This hitch system was so spot on to install easily onto my 2013 Chevy Traverse. I did most of it by myself. The holes all lined up perfectly. The only worry I have is with the very basic brake wire that runs under the chassis to the front end. We get a lot of extreme weather elements in Minnesota and chemical spray from the roads. It maybe could have been offered with a protective sleeve. 244029
by: Bob Weist02/18/2016
thank you 238123
by: Glen10/21/2015
Web site works well. You tube videos are great for installation instructions. Thanks, Glen 230428
by: Dean08/10/2015
Good prices, quick delivery 218336
by: Cody B05/18/2015
I bought products:C56181,TM75127, D13035, D/3503, 39523, PS49903, ETBC7, from E Trailer, and installed them on my wife's 2015 Chevy Traverse. Over all the products were pretty easy to install, but it still took a while to do it right. When installing the Brake controller, and connecting to the brake petal switch connect to the white wire in plug taped back on the left side under drivers side dash, and do so on the plug prong, with a female spade crimp terminal, not the inline crimp connector provided, they aren't very reliable I my experiences. Also soder all your but joints and heat shrink, or tape, I've had too many problems with crimp terminals corroding. On the Transmission cooler get some very light gauge 1 1/2 x3" angle iron and mount your cooler to it on the 3" side suspending down from at least 3 front grill torx headed screw ran through the 1 1/2 side of angle, I didn't like the idea of shoving the chess plastic mounting kit through my radiator, plus it eliminates the need of removing electric fans and this way you only hafta take top screws out of front grill and slide cooler and bracket down through. Thanks E trailer for compiling all videos these were very helpful? 194226
by: Paul k04/21/2015
Everything as expected. Good directions specific to my vehicle. It took me 3 hours to install which was longer than I expected, but fun DIY project. 186887
by: Devin Fink02/26/2015
keep up good work 176229
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