bing tracking image
  1. Custom Fit Vehicle Wiring
  2. CURT
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. No Converter
Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

Item # C55515
Retail:$29.53
Our Price: $15.66
You Save: 47%
Custom Fit Vehicle Wiring

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Shipping Weight: 0.52 lbs
Add to cart
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. Connector plugs directly into OEM tow package port - no cutting, splicing or tapping required. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C55515 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 for Factory Tow Package - 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
  • All Info
  • Reviews (171)
  • Q & A (0)
  • Photos

CURT Custom Fit Vehicle Wiring - C55515

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • No Converter
  • CURT

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. Connector plugs directly into OEM tow package port - no cutting, splicing or tapping required.


Features:

  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Designed for use with a factory tow package
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection point behind rear bumper
    • Plug in connector
  • Comes with dust cap for 4-way flat connector
  • Limited 1-year warranty


Installation

This custom-fit T-connector plugs into your vehicle's factory tow package wiring harness, which is located behind the rear bumper, along the driver's-side frame rail.


Once installation is complete, the 4-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.


It is recommended that you use a small amount of grease on all electrical connections - the plug on your automobile and the 4-pole connector itself - to help prevent corrosion.



55515 Curt T-Connector - OE Replacement 4-Flat

Installation Details C55515 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector - C55515

Average Customer Rating:  4.8 out of 5 stars   (171 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. Connector plugs directly into OEM tow package port - no cutting, splicing or tapping required.

by:
2004 Chevrolet Tahoe

Connected to my 04 tahoe (base model) just like it should



by:

This was a quarter of the price that Jeep wanted to sell it to me for and with some personal modifications/additional wiring I now have two versatile means of hooking up my trailer lights!



by:

Easy install, great product - no issues yet. Recommended.



by:
2014 Jeep Grand Cherokee

Excellent product and very straightforward to install. Opted for the Curt T-Connector C55515 and will have my dealer flash computer to recognize new configuration. Already used hitch with trailer to haul several heavy items up to about 2000lbs with no trouble whatsoever. Should have got this years ago!



by:

Good Quality!

James

7/20/2023

Very good, No problems!



by:

Great product/fantastic service



by:

Plug and play is all I need to say.



by:
2014 Jeep Grand Cherokee

Fast shipping, easy install, product as described. The only complaint was the need to take the vehicle (2014 Jeep Grand Cherokee) to dealer for ECU flash. I know this is not Etrailer's fault so not knocking them. I just hope to save other people time in the future if they think they are just able to plug in and tow.

Timothy B.

8/2/2016

8/02/2016 Update - replaced the 2014 Grand Cherokee with a 2016 Grand Cherokee, forced dealer to swap the hitch and wiring from old jeep to new jeep as part of the deal. Item still working as described, no complaints.



by:

avalanche owners,easy too install i highly suggest when installing pull the cable through the hitch its open at the end less wire being exposed,(this is from my experience) other than that i am very happy with an troop,Patrick B,an everyone at etrailer.com provided great costumer service i will be buying from them soon.

Jason G.

8/8/2014

Still working after the harsh new England weather we had still works I highly recommend there products also I willing be putting in an order for a new Chevy light up logo so get ready



by:
2013 Jeep Grand Cherokee

Item was great and worked like a charm. Only problem was the vehicle. I used it on a 2013 Jeep Grand Cherokee. The vehicle came standard with the 7 pin connecter but since it didn't come with the "towing package", the dealer had to reprogram the system to start sending voltage to the vehicle connector.

Jim

11/23/2014

What was the cost to have the grand cherokee reprogrammed, and how long did the reprogram take?

Burt

11/26/2014

Jim the dealer charged $50 and it only took about 10 minutes once they figured out the problem. They spent about 4 hours figure it out tho.



by:

I was not aware at the time i purchased this item that it was not what i needed. The page told me i needed this item to complete my set up so i bought it. little did i know that my vehicle does not have a factory wiring harness so what i bought was useless. I am going to have to return this item. The page should also make it more clear of what you may need before you purchase something and you wait almost 2 weeks for it to arrive. I had to order what i needed else ware to be here when I need it to be.

Etrailer Expert

Heather A.

1/15/2021

Thank you for your review. The 2019 Dodge Durango does need a factory towing package to use this wiring harness. Since the 2019 Dodge Durango does not have the factory towing package you will need part Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part C56336.



by:

Plug n Play once you turn on the trailer functions in the computer... dealer wanted $175 to enable the lights. It can be done DIY for around $20.



by:
2014 Jeep Grand Cherokee

Question for you please. The hitch itself has been great, but I can't get the wiring harness for the lights to work on the trailer. I'm reading different things online, sounds like my Grand Cherokee may have to be programmed for the lights to work? Are you familiar with that? Is that the case?

Thanks in advance!



by:

I chose the Draw tight Max Frame Trailer Hitch for its known quality, i like it comes powder coated to reduce unsightly rust and to keep that fresh look.
I chose the this hitch for my all around light and heavy duty needs.
The Draw Tight Ball Mount is a quality enhancement to this hitch.
I chose the 2" chrome ball for its quality and appearance.
The Curt C55515 wire connector was the best choice for my lighting needs.



by:
2014 Jeep Grand Cherokee

Works perfectly! Pulled the cover off the existing plug on my 2014 Grand Cherokee (up under the rear of the vehicle) and this plugged right in.

NOTE: You may have to have the computer flashed by the dealer to enable trailer lighting. This cost me about $45 at a local Dodge dealer.



by:
GMC Terrain

The connector was as described ,no splice and simple. Also i ordered one for my Terrain and a class 2 hitch. Although the harness for the car was the wrong part,the customer service dept. took care of it immediately and it fit and installed with ease. The hitch went on with no problems and their videos showed everything you need to do. These guys will get my business from now on. a+++



by:
2017 Dodge Durango

Installation of the T-Connector was extremely easy once I released the lock that held the factory cover in place, however, I don't recall seeing mention of the fact that the dealer has to "flash the ECU" [computer] to enable and turn on the factory wiring harness. I spent quite a bit of time troubleshooting no lights before finding mention of this on the internet and confirmed with a dealership that wanted $160 to do this work.



by:
2006 Ford Ranger

Decent looking product. Would have been even better if it worked as advertised. Does not plug into my 2006 Ranger with tow package. Etrailer.com offered to refund the purchase price minus the original shipping cost, plus I had to foot the bill to ship it back. It would have cost more than it's worth. No thanks, I'll just use the pigtail and hard wire it.

Etrailer customer service was very prompt in responding, not that it did me any good.



by:
2014 Jeep Grand Cherokee

Trailer hitch fit like a glove and looks great. The wiring harness was exact fit and will have to go to the dealer and have the vehicle part of the wiring turned on. Instruction and video on e-trailer helped a lot to determine my needs and installation.



by:
2017 Dodge Durango

Installation went well. You will need to cut the spare tire splash cover. Its made of plastic and was easy to cut in place with a, multi tool saw.
Also the Curt T- wiring harness # C55515 plugged in easy as well.
I would also recommend the mounting bracket # 18144 for a nice clean job.
On the 2017 Durango you will have to have the dealer activate the tow plug (flashing the computer ).



by:
2003 Chevrolet TrailBlazer

Bought this to use on my '03 Trailblazer. Still works good after 1 year of use towing the boat. It even got road tested once since I hadn't plugged it in all the way and it fell out and drug on the ground for a mile or so. :-)



by:

No lights after installation. Don't think it was product's fault. Dealer told me vehicle did not have module for trailer lights, even though it had the connection for your harness. Ugh!



by:

After going to many auto stores trying to track down this wiring harness I finally found it at Etrailer. Had the part in my hands before they said it would arrive. Could not beat the price. Thanks again Etrailer.



by:
2003 Chevrolet Silverado

Product was easy to install into the Chev Silverado's existing wire harness. The provided zip ties allowed me to route the 4-wire unit beside existing wiring to the hitch receiver area. Be sure to review the provided videos on simple installation.



by:
Jeep

PERFECT ! What a pleasant experience from the friendly folks i talked to and on to package being deliveried as said by ups to my door step , a perfect fit i put in on by myself about 25 minutes wiring harness work just like a factory installed one.
I did have to take my Jeep back to dealer for a computer program feature update by working fine.
Will rate 100% Great job to all


25
171
Show More Reviews

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

  • Recommended 4-Way Wiring Harnesses for a 2007 Ford Ranger w/ and w/out the Tow Package
    Installing the Curt T-Connector Vehicle Wiring Harness item # C55515 will not require you to flash the ecu on your 2007 Ford Ranger. This harness installs on the Ford Ranger's with the factory tow package. If your truck didn't come with a 4-way or 7-way connector you will need the Hopkins Plug-In Simple Vehicle Wiring Harness item # HM40655. This harness does not require the ecu to be flashed either.
    view full answer...
  • Trailer Wiring Does Not Work On My 2014 Jeep Grand Cherokee
    The dealership is correct in a sense. Even though your 2014 Jeep Grand Cherokee has the factory tow package wiring, the wiring may not be activated. You may have to take the vehicle to the dealership so they can program the computer to activate the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector Item # C55515. Should only take about 10 minutes. It is not uncommon on some vehicles that have factory tow package wiring and it not be activated....
    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
  • Does Trailer Wiring for 2014 Jeep Cherokee Require Dealership Computer Programming
    If you are using any of the trailer wiring harnesses we offer like the # C55515 or # C56208 which fit your 2014 Jeep Cherokee you would not be required to reprogram anything.
    view full answer...
  • Recommended 4-Way Wiring Harness for Towing With 2013 Buick Enclave
    It sounds like you do not have a factory trailer connector on your 2013 Buick Enclave. If that is correct, I recommend the T-One Vehicle Wiring Harness # 118270. I would choose the Tekonsha wiring over other options since we have found them to be the most reliable. This wiring harness plugs into the connection point beneath your vehicle along the frame rail. It also includes the necessary fuses and relays for installing. If you do have the factory tow package and OEM tow package port...
    view full answer...
  • Is the Curt T-Connector part # C55515 Compatible with a 2002 Chevy Silverado
    As long as you have a factory 7-way at the rear of your 2002 Chevy Silverado yes, the Curt T-Connector part # C55515 that you referenced would work for you.
    view full answer...
  • Will the Carpod Walled Cargo Carrier Fit a 2014 Buick Enclave
    The Carpod Walled Cargo Carrier part # M2200-01-02 requires that you have 4" or fewer from the center of your hitch pin hole to the rear edge of your bumper. The trailer hitch options we have like the Draw-Tite Max-Frame Trailer Hitch Receiver part # 75528 do not meet this requirement (5") which means the Carpod Walled Cargo Carrier may not work for you depending on the above measurement for your 2014 Buick Enclave. If the Carpod Walled Cargo Carrier will not work then the GearDeck 17...
    view full answer...
  • No Trailer Running Lights on a 2012 Jeep Grand Cherokee
    If all of the trailer lights are working except the running lights then there could be a few potential causes. For starters, I would check that the trailer running light fuse on your 2012 Jeep Grand Cherokee to make sure it is intact. If this is not the problem then you will want to check the pins inside each trailer connector in addition to the wires leading into the back of them. The wires need to be tight without much play while pulling them and the pins need to be straight and free...
    view full answer...
  • Recommended 4-Way for a 2004 Chevrolet Silverado Without Tow Package
    The 2004 Chevrolet Silverados should all come with the US Car Connector under the bumper near the spare tire. It is a round plug that will match up to the Curt T-Connector Vehicle Wiring Harness part # C55515. If you are saying you don't have this only option would be a splice-in one, the Curt Upgraded Circuit Protected Powered Tail Light Converter part # C56496.
    view full answer...
  • Recommended Trailer hitch Receiver For a 2008 Ford Ranger 4x4
    I recommend installing our etrailer Trailer Hitch Receiver # e29AR on your 2008 Ford Ranger 4x4 with the 4.0L 6 cylinder engine. The frame mounted receiver may require the drilling of 2 additional holes as Ford did not drill these holes in every Ford ranger. There is also not a bolt on receiver for your bumper. I have linked the installation instructions below so you can see where the holes are ahead of time to determine if you will need to drill. If you will need a 4-way flat connector...
    view full answer...
  • Right Brake Light on 4-Pole Trailer Connector Not Working on 2004 GMC Sierra
    If your 2004 GMC Sierra uses a 4-pole flat trailer connector like the Tow Ready # 118384 that you referenced the right turn and right brake light signals both will be carried on the green wire. Please refer to the linked photo. The most common cause for one light function (the right turn light) to work while another carried on the same wire (the right brake light) does NOT work is a bad ground connection. Turn signals do not pull as much current as a brake light signal, since turn signals...
    view full answer...
    Image 1 for
  • Is There a Completely Hidden Hitch Available for the 2020 Dodge Durango?
    I have a great solution for you to mount a hitch behind the bumper on your 2020 Dodge Durango; have a look at the Draw-Tite Class III Max Frame # DT38MR. This hitch mounts behind the bumper and is accessible via the removable panel on the rear bumper so that it stays hidden when it's not in use. When it comes to wiring, you'll want to use the Tekonsha # 118617 which plugs in behind the driver and passenger side tail lights to provide you with a 4 way connector on the rear of your vehicle....
    view full answer...
    Image 1 for Image 2 for
  • Troubleshooting No Trailer Wiring Turn Signals on 2012 Jeep Grand Cherokee Factory Trailer Wiring
    Most likely it's a blown fuse under the hood of your 2012 Jeep Grand Cherokee for the trailer wiring turn signals. You can check there and replace as needed. The other possibility is that the trailer wiring connector is damaged and is in need of being replaced. I'd first check all of the pins on the connector for corrosion and clean as needed with sandpaper though. But if when you are there you see that the connector is overall in bad shape it's probably just better and easier to replace...
    view full answer...
  • 4-Pole Trailer Wiring Harness Options for 2017 Audi Q7 Prestige
    The Curt hitch # C13277 is a confirmed fit on your 2017 Audi Q7 but the wiring harness # C55515 is not confirmed at this time. This harness does not fit any Audi models; it fits only U.S. vehicles that have an industry-standard round U.S. Car type connector, which is usually found under the rear bumper or tucked away behind the spare tire. The correct 4-pole wiring harness options for your 2017 Q7 are Curt part # C59236 and Tekonsha # 119250KIT. The Curt is a hard-wired installation and...
    view full answer...
  • 7 Way Trailer Wiring Recommendation for 2015 Ford Expedition
    If you trace the 4-way harness back does it end with a round connector like the part # C55515? If so, then what you can do is replace that assembly with the # HM40975 and you'll have a 7 and 4-way. Or you can look to see if you can find that round connector tucked up somewhere behind the bumper area. It SHOULD be there but if not we can still help. Now if your trailer does not have brakes all you would need is the part # 37185 as an adapter to convert the 4-way to a 7-way. If you do...
    view full answer...
  • Troubleshooting Trailer Connectors That Do Not Pass Running Lights or Turn Signals
    The best way to troubleshoot trailer wiring is to first test your Acadia's 4-pole WITHOUT the Curt adapter. This will let you know if the signals are reaching the adapter. Even though the LED test lights may come on, since these take so little power to light up it could be that there is a small residual voltage in the system that is causing them to illuminate even when no actual running light or turn signal is reaching the adapter. You can use a tester like the # PTW2993 to check the Acadia's...
    view full answer...
    Image 1 for
  • Troubleshooting Trailer Wiring on 2012 Ford Expedition
    Your 2012 Ford Expedition should have a factory 7-way harness. There is a round connector called a US CAR connector that will allow you to have the wiring functions you need. If you need a 4-way, use # C55515 or if you want to add a 4-way in addition to your 7-way you can use # C55384. If you want a replacement 7-way use # C55774 which will give you both options. If you are having issues with function, check your owners manual for fuse or relay issues if it is just a single function...
    view full answer...
    Image 1 for
  • Recommended Trailer Wiring Harness for a 2002 Chevy Silverado 1500 To Connect a Boat Trailer
    If you just need the socket portion I recommend the Hopkins # HM40975 and it will allow you to tow your boat trailer with either a 7- or 4-pole plug. It will come with the mounting bracket too. If you need the harness to plug into the frame wiring then use # C55515. The connector plugs directly into your factory tow package port. The wiring configuration is as follows: Red - Left Turn and Stop - 14 gauge White - Ground - 10 gauge Blue - Electric Brakes - 12 gauge Green - Right Turn...
    view full answer...
  • Recommended 4-Way Flat and Bracket for Factory Car Wiring
    The end you described of the # HM40975-11998 is the standard factory wiring for most vehicles and is called a US car connector. If that is what you have, then you can use the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector # C55515. If you want a bracket you can use # 18144 and # C57202. Another alternative is the Curt Easy Mount Bracket for 4- or 5-Way Flat Trailer Connector # C58001.
    view full answer...
  • Will the Bumper Fascia Panel Need to be Removed When Installing Hitch on a 2017 Buick Enclave
    At the rear of many Buick Enclave models, there is a cover that is in the center of the bumper fascia. If you view the attached video and at the 0:25 second mark you will see our tech removing the panel. The removal of this panel may not be applicable to your model vehicle. For your 2017 Buick Enclave, I recommend the Curt Class III Trailer Receiver Hitch, # 13424. This hitch have the 2 x 2 inch receiver opening that will give up more choices of hitch accessories like bike racks and...
    view full answer...
  • Fuse and Relay Locations for Trailer Lights on a 2008 Ford Super Duty
    Starting on page 303 of the owner's manual for a 2008 Ford Super Duty it looks like there are relays in positions 20 and 21 for the left and right stop/turn trailer signals. Then on page 305 there is a fuse in position 34 for the stop/turn relay and in position 42 there is a fuse for the park lamp (running lights) relay. Page 306 shows a relay in position 55 for the park lamps and a fuse in position 63 for the back-up lamps as well. Let me know if you are still having problems and I can...
    view full answer...
  • Troubleshooting 2014 Jeep Grand Cherokee Trailer Lights that No Longer Work
    The Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector # C55515 is a confirmed fit for your 2014 Jeep Grand Cherokee with a tow package. Since the lights worked and don't work any longer, I recommend disconnecting the Curt harness from the factory harness, and checking the pins of the factory harness with a circuit tester like # PTW2993. Also check for bent pins as this can be the cause of a poor connection. If the functions work correctly...
    view full answer...
  • Troubleshooting Trailer Wiring of 2015 Grand Cherokee That Stopped Working
    If your factory trailer wiring stopped working it's most likely due to blown fuses or relays under the hood of your 2015 Jeep Grand Cherokee. That's what I would check first. From there if everything looks good it would be time to go to a dealer to see if anything needs to be reflashed. Older Ram trucks used to require their TIPM to be reset if the trailer wiring ever experienced a short.
    view full answer...
  • Turn Signals and Brake Lights Not Working On 2004 Nissan Titan Factory Tow Package Wiring
    If you are testing that actual trailer connector on your 2004 Nissan Titan with a circuit tester, such as # PTW2993, then the likely culprit causing the brake and turn signals not to work is a bad or missing fuse or relay. Consult the trucks owner's manual and/or power distribution box lid to determine the locations of the fuses/relays related to the tow package wiring. Fuses are easy to check but relays are a little harder. Basically, to test a relay you need a known good relay that...
    view full answer...


< Previous



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


Info for this part was:

Employee Andrew K
Video by:
Andrew K
Employee Kathleen M
Video by:
Kathleen M
Employee Dustin K
Video by:
Dustin K
Employee Lindsey S
Written by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Zach D
Video Edited:
Zach D
Employee John S
Video Edited:
John S
Employee Nicholas E
Test Fit:
Nicholas E
Employee Randy B
Test Fit:
Randy B
Employee Brent H
Test Fit:
Brent H
Employee Matthew B
Test Fit:
Matthew B
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee David F
Installed by:
David F

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.