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  1. Custom Fit Vehicle Wiring
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  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. No Converter
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 # C56020
Retail:$59.95
Our Price: $37.34
You Save: 38%
Custom Fit Vehicle Wiring

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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 - no cutting, splicing or tapping required. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C56020 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 (138)
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  • Why etrailer?

CURT Custom Fit Vehicle Wiring - C56020

  • 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. T-connector plugs directly into existing wiring - 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
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection points behind tail lights
    • Plug in T-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 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 and interior trim paneling to access this harness.


Once installation is complete, the 4-way connector will be stowed in an out-of-the-way location within your cargo area.


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



56020 CURT T-Connector - 4 Wire

Installation Details C56020 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C56020

Average Customer Rating:  4.7 out of 5 stars   (138 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 - no cutting, splicing or tapping required.

by:

Within 3000 miles the wires came loose from the connections and shorted the light system, unfortunately withing a few minutes of this happening, I was stopped by a office. I could have gotten a ticket but instead was given a warning. Had to re wire on the spot around the connections to be able to move the van.




by:

Item was fine but etrailer was really challenged at providing customer service. The automated system made mistakes and the rep sent two parts on accident and eventually I was able to return but it wasted some of my work time




by:
2007 Ford Van

The product and price is fine. The service by etrailer is terrible and it took a month to receive my order. I called in to cancel the order and they sent me two wiring harnesses (???) and also didn't cancel the order. I have emailed three times trying to return the items and no one follows through. Most of the correspondence is automated with fake human names so the buyer can't tell if they are talking to a human or robot. I will never buy from etrailer again.


Comments
It is unfortunate that you had such a bad experience with us. I have sent this over to our customer service team for them to better assist you.
-- Etrailer Expert Katrina B - 04/11/2022


by:

Very durable and easy installation. I’ve made multiple 400 mile trips with 6x12 uhaul trailer full of custom cabinets (easily a few thousand lbs) and have had no trouble at all. I installed the hitch in about an hour in the dead of winter. Would’ve taken half the time if it wasn’t so cold.




by:
2012 Ford Van

Connectors did not fit through grommeted opening on floor. Wound up cutting the grn/wh wire and fed from top down then spliced them together. Not ideal but better than enlarging opening in floor. Connectors on taillights fit well. Overall happy with item.


Comments
For this harness you would want to remove the grommet and cut a slit large enough to route the custom wiring harness though. I recommend viewing our video install on a 2011 Ford van.
-- Etrailer Expert Jenny N - 02/23/2022


by:

Fit great and no complaints. I would buy again.




by:

Simplified the addition of a towing package. Wires allow electrons to flow effortlessly while creating a warm glow across the resistive lighting elements. Havent been so happy since the day of my wedding, birth of my son! If I had use for them I would purchase like 100! Best financial decision I could have made and a very solid product!




by:

Excellent experience. Customer service person was very knowledgeable. She found the right part for my van quickly. She asked several questions to make sure I was getting the right pat and also everything else I would need for the install. She shipped the hitch and electrical assembly the same day for next day delivery. As soon as it shipped she sent my tracking number and followed up with me a soon as it arrived to make sure everything was good.

My mechanic had no problem with the install - perfect fit. This is my third order with etrailer. I'll ever buy any where else.


Comments
Everything still working flawlessly Thank you
Jay - 11/21/2017


by:
2013 Ford E250

The product is great. It went on a 2013 Ford E250. Loved the factory connections. It made the install easy. I ran the harness down through the opening for the spare tire lock instead of letting it hang out the underside of the rear door. Also, I ran the driver-side line under the plastic molding along the floor as opposed to going over the door frame. I had to do that since I ran the harness out the spare tire lock opening. I wanted this harness to remain in place all of the time without worrying about damaging it during loading and unloading.


Comments
Still good. No problems with this product, at all.
Brian - 02/25/2015


by:
2005 Ford Econoline

I have ordered from this site before and never had any problems. I was disappointed in this purchase though because it describes the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C56020 to fit ANY 04-13 Econoline Van which is not true. It DOES fit any passenger or cargo Econoline Van. If you own a Regency(conversion style) van it does not fit without extreme modifications. Etrailer.com is an amazing company and has always been easy and great to deal with! I love this site and will continue to use them!


Comments
Our hitches and wire kits are designed to fit OEM production vehicles, as they roll off the assembly lines. Aftermarket modifications, including conversions, make changes to the vehicle and some can affect compatibility. A van conversion involves major modifications including changes to the electrical systems.
-- Etrailer Expert Patrick B - 05/30/2014


by:

Easy installation works great!




by:

fairly simple to install and works.




by:
2006 Ford Van

Father put this on his van within minutes. Haven’t tested it out with the trailer yet, but installation was a breeze




by:

Much easier to install than I thought it was going to be. Works great!




by:
2011 Ford Van

fit and worked perfectly. Would be nice if a piece of sheathing to protect the wires where it has to go over pinch welds behind the plastic trim panels were included. Otherwise a dozen wraps with electrical tape takes care of that.


Comments
Works perfectly. Lookig back however I wish Id gone to the trouble of installing a 7-way brake harness
twiisted71 - 09/19/2016


by:
2007 Ford e-350

This harness is truly plug-n-play. Couldn't be any easier. If you know how to use a screwdriver, you can install this. Put it on an '07 E-350 Ford van, and it works great. Karen @ etrailer knew just what I needed & recommended this product, and I'm glad she did. Thank you Karen!!! 1st time ordering from etrailer, and I will certainly order from them again!!


Comments
The plug-n-play wiring harness has been working flawlessly. I couldnt be any more satisfied. I also ordered a custom fit hitch receiver at the same time, and it has been great. Installation instructions were very clear, and installed it in about 10 minutes with no drilling whatsoever. Just what I wanted & needed. The best part... everything was shipped to my doorstep and I saved over $100 from my local auto parts store. Im a very satisfied customer, and have recommended etrailer to all my friends.
James B - 09/20/2018


by:

Fine. The directions and video could be improved since no one mentioned the back up lights really did not need to be involved with the connections. Just the signal and brake and lights are unplugged and replugged. Textbook vs reality.


Comments
Just fine.
Craig D - 07/07/2015


by:
2010 Ford Van

Easy to install, good fit to existing wiring, although the pigtail to the trailer plug could be a little longer (6" more?), but long enough for my trailer wiring to reach the plug. I think I should have bought the unit that had a control box included, because my turn signals flash as if there's a bulb out from the extra draw to the trailer (only turn signals, NOT with the 4-ways . . . ). Not a big deal, gets the job done, the fast signal is a small issue.




by:
2012 Ford Van

this wire harness ws put on 2012 Ford van, it was easy and fast, the quality of the
components' was great, compared to other products that I had purchased at
Harbor tools. Great product and easy instructions.


Comments
Working just fine , and so easy to install, thanks
Daniel P - 10/24/2017


by:
2005 Ford Van

I ordered a Curt trailer hitch receiver and the Curt T connector wiring harness from e-trailer for one of our work vans. It was here in a couple days. I watched an installation video on e-trailers website and had everything installed, including the wiring harness in about 30 minutes. It was a piece on cake. E-trailers website makes it very easy to find what equipment to use on your rig. I will most certainly go through e-trailer again!!!!!!!!!!!




by:
2006 Ford E-250

Customer service was great. Had to call them to discuss my needs, they knew what they were talking about and sold me the right parts. Install was simple when following the instructional video they have on this site. Very nice having that resource, more helpful than a phone call because you can pause it. :) I installed a flat four and a seven pole with a trailer brake controller to my 2006 E-250 van, worked the first time with no blown fuses like the old days.
Peace,
Marc
Alpena, MI




by:

As promised the harness wired up directly to the existing vehicle wiring harness the instructions were clear. Also the trailer hitch was very easy to install, and the video on your website is excellent. I would certainly recommend these products and your company to anyone in search of a trailer hitch.




by:

Really like this harness. It was plug and play just as advertised!




by:
2012 Ford Van

Plugged in easily and worked perfectly. I can't say enough good things about etrailer. Great customer service. Even if things don't go as planned they make it right.


Comments
No problems at all. Functions perfectly
Jason - 08/11/2016


by:
2011 Ford Van

The hitch that i purchased is better looking than i expected, it took me less than 30 minutes to install, no drilling required. The light harness couldnt been more easier to install. Now i can tow my gear every where! With my Ford 2011 E350
Etrailer.com make buying gear for your vehicle easy , even when your not sure what products work best for you. Plenty of information
Love the videos and fotos.



25
138
Show More Reviews

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

  • 4-Way Trailer Wiring Harness Recommendation for 2004 Ford E-450 RV
    The 4-way trailer wiring kit you need for your 2004 Ford E450 RV is the Curt 4-way part # C56020. This is a custom fit, easy to install harness. I attached an install video for this kit for you to check out as well.
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  • Locating Connection Points on a 2007 Ford E-350 Van to Install Custom Fit Vehicle Wiring # C56020
    The connection points to install the Valley Custom Fit Vehicle Wiring, # C56020, on your 2007 Ford E-350 van are located behind each of the taillights. The plugs on the connectors plug in line with those on your vehicle taillights. I have included a link to the installation details for the harness below.
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    When installing the Valley Custom Fit Vehicle Wiring, # C56020, for Ford E-series vans, you will just need to plug in the connectors on the wiring harness to the connectors behind each of the tail lights. The bundle with the yellow, brown, and white wires goes to the left (driver side) tail light. The bundle with the green and white wires goes to the right (passenger side) tail light. I have included a link to the installation details for reference.
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  • Will the Curt T-Connector Vehicle Wiring Harness # C56020 fit a 2004 Ford E-250
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    The correct wiring for your 2006 Ford E-350 Cutaway is the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56020. I've added links to a pair of video reviews on this product for you to take a look at.
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  • Replacement Trailer Wiring Harness on a 2010 Ford Van
    I do have a replacement 4-way option for your 2010 Ford Van, but it doesn't quite install like your factory harness did. You'll need the Curt # C56020 which plugs in inline of your tail light connectors and gives you the functional 4-way connector you're looking for. I have attached an installation video of the # C56020 for you to take a look at.
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  • Troubleshooting Stop/Blinker Not Functioning on a 2007 Ford E 250
    If both the stop/turn signal functions aren't working on the 4-way of your 2007 Ford E-250 the problem is most likely a towing fuse or relay under the hood of the vehicle. Check the fuse/relay boxes for towing related fuses/relays and replace as necessary. I attached a help article on troubleshooting 4-ways for you to check out as well.
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  • Is a Converter Box Needed for Trailer Wiring on a 2008 Ford E-350
    For starters, the Curt Trailer Hitch Receiver part # 14055 is an excellent option for your 2008 Ford E-350 and will work well for you. It is a Class III hitch with a 2" receiver tube opening. I have attached a sample installation video on this hitch for you as well. In regards to trailer wiring, the converter box has nothing to do with the reverse sensors on a 4-way harness. The converter box helps with power drawl on the vehicle's electrical circuit. In some cases the vehicles factory...
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  • 4-Pole Trailer Wiring Harness Options for 2012 Ford E350 Van
    We can help you with a 4-pole flat trailer wiring harness for your 2012 Ford E-350 van. All types of wiring kits are shown on the linked page. These include products for vans equipped with no factory wiring, vans with a factory 4-pole set-up and vans with a factory 7-way. You can use the drop-down menu tool at the top of the page to Select Vehicle Style of your particular van to then see appropriate products. If the van has no type of factory-installed trailer wiring you can use the plug-in...
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  • Ground Wire Problems With 7-way Adapter On 2008 E350 Econoline Van
    You went the right way when you checked the ground wire first. You will need to make sure all of your ground connections are good. The ground connection at the vehicle is especially important because it must travel through the connector to the trailer frame. The connector on the trailer should be secured to a clean surface on the trailer frame and each taillight assembly must be grounded either through the mounting bolts or a separate wire from the taillight to the trailer frame. When...
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  • Trailer Wiring Harness for a 2012 Ford E-250 Van
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  • Replacement 4-Way Trailer Wiring for 2007 Ford E250
    If you are needing to replace the 4-way on your 2007 Ford E250 you can use the Curt T-Connector Vehicle Wiring Harness, # C56020. If you are actually looking to convert the 4-way to a 7-way you will need to use adapter # 37185. Your current 4-way will just plug into the 4-way plug on the adapter and the remaining 4 wires will need to be connected as follows: White - Ground to the vehicle frame. Black - Connect to battery with fuse or breaker for 12V power. Blue - Connect to Brake Controller...
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  • 4-Pole Wiring Harness for 2007 Ford E-450 Shuttle Van Without Factory Tow Package
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  • Trailer Wiring Recommendations to Install Brake Controller on 2007 Ford E250 without Factory Wiring
    The Curt Custom Fit Vehicle Wiring # C56020 that you referenced does not include the wiring to activate trailer brakes. In order to activate the trailer brakes you will need to install the # C56020 and a Brake Controller Installation Kit # ETBC7. This kit comes with everything you would need to install a brake controller which will activate the trailer brakes. I attached some helpful links for you to check out also.
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  • Parts Needed to Add a Trailer Brake Controller to a 2011 Ford E-350
    The power used by a trailer wiring harness like # 118551 only powers the trailer lights and will not have any affect on a brake controller or the 7-Way nor will either of those items affect the 118551. Since the 4-Way only has the lighting functions, when you hardwire the 7-Way you will need to run additional wires for the remaining functions. I have included a link to our wiring FAQ article with diagrams of various trailer connectors that you can use when hardwiring in the 7-Way. I...
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