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Replacement OEM Wiring Harness for Ford F-150

Replacement OEM Wiring Harness for Ford F-150

Item # C56110
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Replacement OEM Wiring Harness for Ford F-150 Custom Fit C56110
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Call 800-298-8924 to order Curt custom fit vehicle wiring part number C56110 or order online at etrailer.com. Free expert support on all Curt products. Guaranteed Lowest Price and Fastest Shipping for Replacement OEM Wiring Harness for Ford F-150. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (13)
  • Q & A (40)
  • Videos (1)
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Curt Custom Fit Vehicle Wiring - C56110

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


  • Supplies 4-way flat plug
  • Exact replacement for damaged OEM wiring harness
  • Protective cap included

56110 Replacement OEM Wiring Harness for Ford F-150

Installation Details C56110 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Video of Replacement OEM Wiring Harness for Ford F-150

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Curt Custom Fit Vehicle Wiring - Trailer Hitch Wiring - C56110 Review

Today we're going to be taking a look at part number C56110, this is your replacement OEM wiring harness. This product is going to fit certain years of the Ford F150 and the E series vehicles. It's going to supply your 4 way flat plug at the back of the vehicle. Now, this is designed to be an exact replacement for a damaged, or needing to replace OEM wiring harness. Here on the 4 way flat, it's going to come with the protective cap, that way you can protect your connection points when the connector is not being used. Just goes over that area there, and then comes over the connectors.

It's also going to come with your detailed instructions, it's going to come with your cable ties to secure any excess or lose wires that you may have, and it's going to come with self taping screw to make a good ground connection right here with the ring terminal, and white wire. Very easy installation, you do not have to worry about cutting or splicing any of your wires. All you have to do is locate the OEM trailer wiring harness connector on top of the spare tire support, it's usually located on the driver side, it favors the driver side. You're going to insert the new connector. The connector should match up perfectly, make sure it's fully inserted, it's going to lock and secure into place for a nice, tight, secure connection. Then you're going to need to make a good ground connection using an existing screw with the nut, or you can use the supplied self taping screw.

Place that right here through the ring terminal that's attached to our white wire, which is our ground wire. Once you have that connected you can then route the 4 way back to the rear of the vehicle, and then you can secure it in a convenient, out of the way location, near the hitch. Again, detailed instructions, these are going to have pictures that are going to help you through the installation process, very detailed. Once you have that done you can go ahead and use some of the cable ties to secure the wiring, keeping it up and out of the way. That's going to do it for today's look at part number C56110.

Customer Reviews

Replacement OEM Wiring Harness for Ford F-150 - C56110

Average Customer Rating:  4.9 out of 5 stars   (13 Customer Reviews)

- C56110

Great product and excellent fit. 693885

- C56110
2012 Ford F-150

This harness for my Ford F-150 was a perfect fit. When I bought my truck it had a hitch but no light harness and everywhere local wanted $50+ dollars. This was an excellent price and so easy to install. Took me a few minutes. All you need is a power screw driver to screw the ground wire down and plug in the harness and that’s it. Definitely recommend this to anyone! 585997

- C56110

F-150 2011 4 wire plug excellent part no problem on install Would of been 5 star , but ground wire terminal was too small for OEM ground , i had to Replace terminal for correct size to fit my application 680644

- C56110

Everything is doing fine 647839

- C56110

This harness worked great and plugged right in as advertised. I strongly recommend etrailer for all your towing needs. 617746

- C56110
2017 Ford F-150

Great product. 546638

- C56110
2013 Ford F-150

Simple plug and play! 498479

- C56110

I can not be happier with the service and product. I received the Draw Tite Class III trailer hitch on time as expected. From start to finish and by myself, it took me exactly 15 minutes to install. I did not need to lower spare tire and it looks clean and neat on the truck. It took me longer to open the cardboard box. Thank you for your great service and follow up and I will highly recommend you in the future. 448386

- C56110
2016 Ford F-150

Great price. Everything fits as it should. Installation videos are awesome. 368909

- C56110


- C56110

After an long search to find this products ETrailers was the only company I could find to carry this product. I will definitely continue doing business here. Great communication, great product and extremely quick shipping. 254278

- C56110
2014 Ford F-150

I highly recommend this product and company. I actually received a phone call about the status of my part from a real person and you surly don't get that anywhere else. Nice job guys! 211818

- C56110

I was told that I had to go thru Ford to get the part I needed and it was $65. I got the part thru etrailer for a fraction of the price. It was delivered very quickly and was exactly what I needed. Thank you etrailer!!!! 201982


Ask the Experts about this Curt Custom Fit Vehicle Wiring

  • Trailer Hitch, Wiring and Brake Controller Recommendation for 2014 Ford F-150
    First let's start with a hitch for your 2014 Ford F-150. For that the most popular option is the Curt # C14002 which I attached an install video for as well. You will need to start with a 4-way (if you do not have one). For that you would want the # 18252. From there you would need to convert the 4-way to a 7-way so that you can install the brake controller. For that you will want the Brake Controller Install Kit and 7-Way Adapter part # ETBC7. I attached installation instructions...
    view full answer...
  • Recommended 4-Way Flat Trailer Connection Wiring for 2017 Ford F-150 without Factory Tow Package
    The Curt Replacement OEM Wiring Harness for Ford F-150 # C56110 is the correct fit for your 2017 F-150. The OEM wiring your need to connect to is on top of the spare tire support on the driver's side. You will need to remove a cover since there wasn't already a 4-way installed.
    view full answer...
  • Best Way to Convert 4-Pole Trailer Connector on 2014 Ford F-150 to a 7-Way Type
    I do have a solution for you to convert your factory 4-pole trailer connector to a 7-way RV-style type on your 2014 Ford F-150 but there is no plug-in harness that will connect where the 4-pole does. Instead you'll use our kit # ETBC7 which includes the 7-way socket, wiring, connectors, circuit breakers - everything you need to adapt the 4-pole to a 7-way with its additional circuits for brake power, 12V trailer power and reverse light signals. Just for reference, the linked photo shows...
    view full answer...
  • Recommended 7way Trailer Plug for a 2014 Ford F-150 That is Prewired for a 4way
    I can help you convert your 4way to a 7way on your 2014 Ford F-150. Since your vehicle is equipped with a factory 4way plug you will first need the Curt harness # C56110. To get a 7way for your trailer needs I recommend an adapter like the # ETBC7. This will allow the 4 way to plug into the adapter then you will need to run a few more wires to to gain the other functions of the 7way. It may be possible to use your current 7way if you snip off the round connector and use butt connectors...
    view full answer...
  • Trailer Wiring Harness Recommendation for a 2013 Ford Edge
    It would appear as if the Replacement OEM Wiring Harness part # C56110 that you referenced would work on your 2013 Ford Edge since you have what looks like the correct port for it. By the way, thanks for the picture. What you can do to verify that the plug is active is use a circuit tester like our part # PTW2993 and test the different pins you see for voltage when the brakes/blinkers/running lights are on. If the pins carry voltage with the use of your taillight functions then the #...
    view full answer...
  • Wiring Color Code for the 7-Way RV Connector Plug And Installation Details for a 2011 Ford F-150
    For Your 2011 Ford F-150, without factory trailer connector, the 7-Way RV wiring colors will be as follows. Green = Right Turn/Stop Yellow = Left Turn/Stop Brown = Taillight White = Ground Black = 12 Volt Power Blue = Electric Brake Output Purple = Reverse Light Circuit or Auxiliary Power We have an article that details trailer connector wire colors for you to review, see link. If your truck has the tow package installed, and no 4-Way connector attached, you can use the Custom...
    view full answer...
  • Reverse Light Recommendation that Easily Plugs into Trailer Wiring
    We have the Light Buster Backup and Utility Light for 7-Way RV Style Connectors # C8020 which plugs into the 7-way trailer wiring connector you have at the rear of your vehicle and will give you a brighter lighting when backing up at night.
    view full answer...
  • Is there a Specific Wiring Color Code for a 7-Way Trailer Connector on a 2013 Ford F-150
    Factory wiring could be any color since there is no one standard that all manufacturers follow. You will need to test the wires by function using a circuit tester such as # 40376 if you do not already have one. I have included a picture that shows a standard 7-Way and how it is pinned out. That should help if you still have the wires attached to the factory connector.
    view full answer...
  • 7-Way and Brake Controller Recommendation for a 2010 Ford F-150 STX
    Since you have the square trailer wiring connector under the rear of your 2010 Ford F-150 you will want to use a circuit tester like part # PTW2993 to test the pins of if for voltage with different taillight circuits activated. If the circuits are activated you would want to use the part # C56110 as a 4-way and the start of your trailer wiring. If the circuits aren't active you instead would want the # 18252 for a 4-way. From there you would need to convert the 4-way to a 7-way so...
    view full answer...
  • How To Install a 7-Way and Brake Controller on a 2012 Ford F-150 with No Trailer Connector
    In order to install a 7-way trailer connector and brake controller on a 2012 Ford F-150 you will first want to start with a 4-way trailer connector, the Replacement OEM Wiring Harness for Ford F-150 part # C56110 which is plug and play. Once we have the 4-way trailer connector installed we can then convert this to a 7-way with the 7-Way RV and 4-Way Flat Adapter part # ETBC7. The 12 volt power and brake output wires should be tapped off near the spare tire somewhere but if not this kit...
    view full answer...
  • How to Add Second 4-Pole Trailer Connector to 2015 Ford F-150
    If you want to add a separate 4-pole connector to your F-150 to power the lights in your tool box you can use part # 118384. This will simply plug in behind your existing trailer connector, going inline with it. Your existing 4-pole/7-way will remain active but you'll then have a second separate 4-pole for connection to the tool box lighting. If your tool box uses different wiring/connectors than a standard 4-pole, please let me know. You'll want to ensure the total load from all...
    view full answer...
  • No Power To Brake Output Pin On 2014 Ford F-150
    The first thing that I recommend you do to test the brake output circuit on your 2014 Ford F-150 is turn the power settings up to max on the brake controller, have a friend apply the manual override, and test the 1 o'clock pin on the 7-way. If you don't get 12 volts then you will need to sever the brake output behind the brake controller and test again for power with the manual override applied at full power. If you don't get 12 volts then replace the brake controller. If you do get 12...
    view full answer...
  • 4-Way Mounting Bracket Recommendation for Replacement 4-Way for 2015 Ford F-150
    For a 4 way mounting bracket to hold the 4-way connector of the part # C56110 I would recommend the # 18144 and the # C57202. The # 18136 will attach to the crosstube of the hitch and then the # 18144 will attach to it to provide a bracket. I attached an install video for you to check out as well.
    view full answer...
  • Wiring Needed to Install a 7-Pin in a 2014 Ford F-150
    To use a 7-pin with your 2014 Ford F-150, the first thing you will need to add is a 4-pin flat plug, # C56110. From there you would need to add Universal Installation Kit # ETBC7. If you are looking for a new brake controller I recommend checking out the Prodigy P3 # 90195. This is a proportional controller which plugs in via adapter # 22292. I have added links to video installs of the kit and brake controller for you to take a look at.
    view full answer...
  • Boat Trailer Lights Sometimes Work and Sometimes Do Not When Connected to 2010 Ford F-150
    It sounds like the connector on your truck may be corroded or there is a loose connection from the vehicle side connector to the boat trailer. I would begin by checking the vehicle and trailer side connector for corrosion, if there is corrosion you will need to replace the connector. Next, you will want to check to make sure all the lights on the trailer have a good ground to a clean metal surface. If you are using a plastic license plate holder, this make be preventing the left light...
    view full answer...
  • How to Install a 7-Way Trailer Connector On a 2012 Ford F-150
    I do have a way for you to install a 7-way trailer connector on your 2012 Ford F-150 but the plug in the photo you attached does not have all of the circuits needed for a 7-way trailer connector so there is not one that plugs directly into this. Instead, you would first need to install a 4-way trailer connector like the Replacement OEM Wiring Harness part # C56110 which does use that plug and then adapt this 4-way into a 7-way using the 7-Way RV and 4-Way Flat Adapter part # ETBC7. If...
    view full answer...
  • Wiring Harness for 2016 Ford F-150 Without Tow Package
    To help you determine which wiring harness will work on your 2016 Ford F-150 you can look for the connector that's under the truck's bumper. If the connector is round and looks like it will match up with picture # 1 that I've attached then you can use # 74682 and plug it right in to give you both a 7-way and 4-way trailer connector. If you find a connector that is more rectangular like in picture # 2 then you can use # C56110 which will give you a 4-way connector. If this is the...
    view full answer...
  • 4-Pole Wiring for 2018 Ford F-150
    We have 4-pole wiring harnesses for the 2018 Ford F-150 such as Curt # C56110 which is a direct OEM replacement. This item and the similar Hopkins part # HM11140735 plugs in at the rear of the truck with a rectangular plug. Please refer to the linked photo. If instead your truck has a round U.S Car type connector you can use Curt # C55774 which includes both 4-pole and 7-way type connectors on one product.
    view full answer...
  • How to Install a Brake Controller on a 2017 Ford F-150
    Assuming you already have a trailer hitch like the Curt # C14017 and a 4-Way like the Curt # C56110 installed on your 2017 Ford F-150 you just need the Universal Wiring Kit # ETBC7 to use a brake controller. This kit includes an adapter that plugs into an existing 4-Way connector and provides you with both a 7-Way and a 4-Way connector making it easy to switch between towing applications. Everything needed to fully activate your 7-Way for the brakes and a charge line for the battery...
    view full answer...
  • Recommended Best Trailer Hitch Receiver Option For 2015 Ford F-150 XLT
    For your 2015 Ford F-150 XLT, I recommend the Curt Trailer Hitch Receiver - Custom Fit - Class IV - 2" # C14016. This will give you a 2 inch receiver for the most variety of accessories and choices for ball mounts. It has an extremely strong rating of 1000 lbs tongue weight and 10,000 lbs towing, which will exceed your vehicle capacity. You will be limited by the capacities listed in your owners manual and not by the parts attached. For your vehicle wiring, your truck either came...
    view full answer...
  • 7-Way Trailer Connector for 2011 Ford F-150
    The wiring harness you referenced, part # 118242 would not be compatible with your 2011 F150. It is designed for the 1997-2003 model years only. The parts necessary to provide a 7-way for your F150 would depend on how it was equipped when it left the factory. If your F-150 has the factory round plug located along the drivers side frame rail behind the back bumper, you would use part # 74682. The factory plug will have a dust cover that will need to be removed, and the 74682 would...
    view full answer...
  • How to Install 7-Way Trailer Connector on 2011 Ford F150
    The parts necessary to provide a 7-way for your F150 would depend on how it was equipped when it left the factory. If your F-150 has the factory round plug located along the drivers side frame rail behind the back bumper, you would use part # 74682. The factory plug will have a dust cover that will need to be removed, and the 74682 would plug right it. If your F-150 does not have the round plug, but has a 4-pole connector, part # 37185 can be used. It would plug into the existing...
    view full answer...
  • Recommended Wiring for 2016 Ford F-150 to Have 7-Way Trailer Connector
    If you already have the round wiring connector on your 2016 Ford F-150, then you simply need the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Pole Flat Connectors # C55774. If you do not have the round connector and instead have the rectangular connector, then you will need the Replacement OEM Wiring Harness for Ford F-150 # C56110 to give you a 4-way and then add the 7-way wiring kit for brake controller # ETBC7 and connect the brake wire to the blue wire...
    view full answer...
  • Parts Needed to Install 7-Way Trailer Wiring in 2016 Ford F-150 without Tow Package
    You will need to start with a 4-way (if you do not have one). For that you would want the # C56110. 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 have trailer brakes you would need the # ETBC7 instead of the # 37185 and a brake controller. This kit comes with everything needed to wire up the 7-way and install a brake controller. For a brake controller I would recommend the Prodigy P2 Brake...
    view full answer...
  • 4-Pole to 7-Way Wiring Conversion Kit for 2011 Ford F-150
    If your 2011 F-150 has a pre-installed 4-pole harness (which probably has a rectangular connector on the truck side like the one on parts # C56110 and # HM11140735; see the linked photo, please) then you can convert that wiring to a 7-way using kit # ETBC7. This kit has all the parts needed to upgrade the 4-pole setup to a fully functioning 7-way. You will retain your current 4-pole and plug it in to the included 7-way adapter in the kit, then make a few more wiring connections for...
    view full answer...
  • Recommended Installation Kit For 2015 Ford F-150 For a Brake Controller
    I assume you have a 4-way connector at the back of your 2015 F-150. If so you will need part # ETBC7. This plugs into the 4-way connector and with additional wiring will give you a working 7-way and 4-way trailer connector at the back of your truck. I have attached a drawing that shows how the wiring is done for the # ETBC7. When working with electrical connectors I recommend using dielectric grease like part # 11755. This keeps dirt and moisture out of the electrical connections...
    view full answer...
  • Does Installing Curt 4-Way on 2017 Ford F-150 Require Flashing Computer at Dealer
    You would not need to take your 2017 Ford F-150 to a dealer to have the computer flashed when installing the 4-way part # C56110. This plugs into a port that will be active for trailer wiring and once plugged in is totally ready to go without needing anything else!
    view full answer...
  • Hitch Recommendation for a 2015 Ford F-150 to Tow a Boat Trailer
    I noticed that you were looking at the Curt Hitch # C13118 which is a confirmed fit for your 2015 Ford F-150. This would be a good choice and it happens to be the most popular Class III trailer hitch for customers with your F-150. This hitch also has a 6,000 lbs. towing capacity so it will work for your boat and trailer. In addition to the trailer hitch to tow your boat trailer you would need to add a few accessories before hitting the road. I recommend the Curt Wiring Harness # C56110...
    view full answer...

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Info for this part was:

Expert Research:
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Expert Research:
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Video Edited:
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Installed by:
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Updated by:
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Updated by:
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