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  1. Custom Fit Vehicle Wiring
  2. Tow Ready
  3. Custom Fit
  4. 7 Round - Blade
  5. Trailer Hitch Wiring
  6. No Converter
Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty)

Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty)

Retail:$88.15
Our Price: $66.56
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Custom Fit Vehicle Wiring

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Tow Ready 7 Round - Blade Custom Fit Vehicle Wiring - 118243
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Tow Ready Custom Fit Vehicle Wiring

  • Custom Fit
  • 7 Round - Blade
  • Trailer Hitch Wiring
  • Tow Ready
  • No Converter


Replacement OEM Tow Package 7-Way Wiring Harness for 99-01 SuperDuty Trucks with OEM 4-Flat Connector
  • Exact Replacement for Damaged OEM Wiring Harness
  • Installs in Seconds
  • Upgrades Vehicles From 4-Flat OEM Wiring to 7-Way Connectors
  • Connects Directly to Standard OEM Connector
  • Fuses and Relays Included

Product detail
Picture of 7-Way Connector.

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118243 Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty)

Item # 118243

Installation Details 118243 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty) - 118243

Average Customer Rating:  4.8 out of 5 stars   (400 Customer Reviews)


by:
Ford F-250 Super Duty

I purchased the 90° 7-pole wiring harness for the bed of my F250 and the OEM replacement 7-pin harness for the rear bumper. I'm the 2nd owner and for a long time I left the plastic bed-liner in it. When I removed it recently I discovered there was a hole in the bedside from the previous owner. I use my truck to pull a fifth-wheel camper too, and the bumper wiring harness pretty much maxes out my trailer's pigtail. Both wiring harnesses were very easy to install, and I was even able to trim the spacer provided with the kit to fit the contour of the bed where the previous owner had drilled the hole. It looks like it came installed from the factory!



by:
1999 Ford F-250 Super Duty

Attached are images of the installation in a 1999 Ford F250 Super Duty 4WD 4 Door 8' bed. I left the 4 prong connection mounted, and tied and bagged the connection for future use if needed.



by:
1999 Ford F-250 Super Duty

I have a 1999 F250 4x4 and wanted to upgrade from 6 round to 7 round to match the car trailer I had just bought. I had almost given up on finding a plug and play up grade and was preparing myself to start cutting wires. I'm so thankful that I found this web sight. They have a very large selection including the one that I needed. On top of that the video of how to install was spot on. I would not have thought of having to add a fuse and upgrade another under the hood.
They were very helpful, great turnaround time and great product. I will definitely buy from them again.



by:

I got this 7 way plug for my 99 f350 because the old one was corroded and didn't work properly. This unit was priced right arrived in a timely manner and was very simple to install. I just had to find where on the harness the old one plugged in and plug the new one in.

John S.

11/8/2021

One year later and it has performed flawless!



by:

Customer service is a joke. Attempted to return an unopened item and they wanted to charge a fee of more than half what the item cost. Never doing business with them again!



by:

Right part right plug on both end . 1 st pick is old harness 2nd is new harness. 3 rd is howl will use it .



by:
1999 Ford F-350, 450, and 550 Cab and Chassis

Showed in stock when purchased, it was not in stock, and I am now waiting for a ship date to be determined.



by:
2001 Ford F-350, 450, and 550 Cab and Chassis

the parts fit, brake controller is now working, just confused which relay was 38 and 39. I guessed and was right. thank you for the fast service. Yes I will order again.



by:

Excellent harness for my super duty. After using one year with multiple trailers it's still working great.

Matthew

12/12/2022

Still working great after one year.



by:

Plugged right into my original wire harness everything went together just fine
Done what it said and said what it did all the wires were spot on



by:

It worked great, I simply removed the old one and replaced it with yours and everything is working fine. Thank you.

Kevin

6/2/2023

Great, I have pulled several different trailers all lights work. No problems.



by:

I replaced my 22 year old factory plug with this and it works perfectly. Would highly recommend if you are looking for the OEM replacement plug.



by:
1999 Ford F-250 and F-350 Super Duty

Great plug and play product. The factory option costs (depending upon the source) 3-4 times what etrailer offers, so this was the clear and wise choice. Fit the factory harness with no modifications.

Nick P.

8/17/2018

Still seems to be working well. Thanks for the check up.



by:

Part was just as described, it plugged right in to my vehicles wire harness and now provides trailer lighting. I would recommend etrailer to anyone!



by:
1999 Ford F-250-and-F-350-Super-Duty

Yup, that's right even if you voted for Hillary you can install this wiring in your truck. Get a good hole saw, cut hole, plug and play!

John W.

12/1/2017

Works great, idiot proof.



by:
1999 Ford F-350 Super Duty

I utilized this product on my 1999, Ford, F-350 Super Duty to replace the OEM factory harness and it worked exactly as promised. Within several minutes the installation was completed and I was ready to tow. e-trailer customer service is excellent!

Ed G.

9/18/2015

Still works fine!



by:
1999 Ford F-250 Super Duty

I upgraded the tow package wiring on a "new to me" 1999 F250 Superduty from the jerry-rigged mess the previous owner had gobbed together to one utilizing the truck's existing trailer tow package, both for the rear of the truck and inside the box for the gooseneck ball hitch. The wiring harness, receptacles, et. al. from etrailer plugged right into the truck's wiring harness with ease, and I would highly recommend their products.
Customer service was impeccable...assisted with an order mix-up on my part, helped me locate the truck's wiring harness plug under the dash, and provided help with finding the correct harness for an older model trailer brake that I already possessed.
To the staff at etrailer---thanks and keep up the great work! When I need trailer parts again, you will be the first I contact!



by:
2002 Ford F-250 and F-350 Super Duty

Should have bought the factory end. The wiring harness on my truck didn't match. I had to cutoff my old end and re-terminated to the new plug in order to make it work. Kind of defeated the purpose of having factory made ends.

Etrailer Expert

Patrick B.

11/19/2012

This connector is only compatible with 1999-2001 F-250F-350 Super Duties. It will also work with 1999-2001 F-450/550 Cab and Chassis with factory 4 connectors and 2001 F-350 Cab and Chassis with factory 4 connector.



by:
1999 Ford F-250 and F-350 Super Duty

Product was need for a time sensitive job. Prompt fast service. Was delivered a day early. Quick easy hook-up. Completed the job and everyone was happy. I recommend this product.



by:

Well , first, I thought it was a ford replacement part , when it came in , not 1 but 2 of them serparate packages , then when I go to install, I see it’s not the double with regular plug also, so this part is useless for me. The one on my truck has 7 pin and 5 pin together. You can not take 7 pin out and switch with new one. Not sure why you sent two kits

Etrailer Expert

Jenny N.

6/22/2022

You mentioned that you wanted to have a harness that would have both the 7- and 4-way connection. I am happy to see if we have what you are looking for. What is the year, make, and model of your truck? Did it come with a factory 7 way?

Gary

6/22/2022

Yes ma’am, it came from Ford that way F-450 platinum, all options. Let me know if you carry the dual plug together,please

Etrailer Expert

Jenny N.

6/22/2022

What is the year of your Ford?

Gary

6/22/2022

2016 F-450 Platinum Dually

Etrailer Expert

Jenny N.

6/22/2022

I looked at everything that we have for the 2016 Ford 450 Platinum Dually and we do not have a seven way to offer that also comes with the four way. I had wanted to offer part HM40975 as a solution because it works with the Ford 350 however it will not. I am guessing it is because the F 450 does not have the round US Carr connection. That is my best guess.



by:
1999 Ford F-350 Super Duty

I have a 1999 Ford F350 Superduty. Fit perfect to the old ford bracket and the wiring harness was an exact fit. Works like a charm.



by:
2000 Ford F-250 and F-350 Super Duty

It is great that it comes with the relays and fuses and instructions for me to take off my 4-way factory plug and install the 7-way with the factory connector. It is plug and play easy. The only thing lacking is a bracket to mount the 7-way connector. I also fit this one because it has the round sealed plug to be able to change out the 7-way easily should it become damaged or if I want to change the style.



by:

Awesome direct replacement fit . Plug and play replacement. I did have to drill a hole in my trucks mounting location as not all the holes lined up exactly but that was a minor inconvenience for the ease of replacement!

Don D.

6/29/2021

A year later its still working great



by:
2000 Ford F-250 Super Duty

I bought the 118243 replacement 7 way trailer connector for my 2000 Ford F250 7.3 Super Duty. Hooked it up in less than an hour. I also needed the adapter bracket 11840. Without this bracket, the 118243 connector would not mount correctly to my truck. It would not clear the bottom of my bumper in the original mounting position on the bumper. I also bought the Pollak 7 plus 4 way connector because I have multiple trailers with different connectors. This product is HM40975 and I highly recommend that it be purchased with the other two products.

The guys at eTrailer really know their products and are so helpful. They know what exceptional customer service is all about. Also, I love all of their online videos and information on the website that allows you to make informed decisions. Their prices are very competitive too. With free shipping over $99, they can't be beat.. For those reasons, I will not buy trailer gear anywhere else.



by:
Ford

I ordered a replacement for my 7 contact trailer socket because all the ones I tried from local parts stores, the mounting holes didn’t line up. I didn’t want to have to change the bracket because they didn’t fit either. And I wasn’t going to pay $280 for one from Ford. Etrailer sent me an email saying that the one I ordered was on back order, but they might have one in stock that would fit. I explained to them that I actually only needed the socket with mounting holes like the factory ones. And even though they all come with the wiring harness, I didn’t need it . They promptly sent me a replacement & it fit perfectly. Thank you so much


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Show More Reviews

See what our Experts say about this Tow Ready Custom Fit Vehicle Wiring

  • Parts Recommendation to Upgrade 4-Way of 1999 Ford Truck to 7-Way
    Yes, the Tow Ready Custom Fit Vehicle Wiring # 118243 is exactly what you need to convert the 4-way on your 1999 Ford truck to a 7-way and comes with everything needed.
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  • Replacement 7-Way Trailer Connector for a 2003 Ford F-250 Super Duty
    Ford Replacement OEM Tow Package Wiring Harness # 118243 is not confirmed to fit the 2003 Ford F-250 Super Duty. But what you could do is use # 40167 which is a fit. It is basically an in-bed 5th wheel/gooseneck 7-Way that Tees in with the factory trailer wiring. I have linked a video showing how it tees in.
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  • 7-Way Trailer Connector for 2000 Ford F550 Flatbed
    We've got just what you're looking for. I'd recommend the Hopkins part # HM40975-11998. The included pigtail will wire up to the tow package harness under the truck as follows: -Red Pigtail Wire to Left turn/stop which is typically a yellow wire in the vehicle harness -White Pigtail harness wire is a ground connection -Blue Pigtail wire carries output from brake controller, usually a blue wire in vehicle harness -Green Pigtail wire to Right turn/stop which is usually a green wire in the...
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  • Cannot Get Constant Green Light on Tekonsha Voyager Brake Controller on 1999 Ford F-250 Super Duty
    The first thing I would check is the wiring on the truck with the 20260 harness connected. Use a circuit tester like # PTW2993 to test the wires for function. The wire that carries a constant signal is your 12-volt power wire and it connects to the black brake controller wire. Next, find the wire that carries a signal only when the brake pedal is pressed. It should not have a signal at any other time (like if the turn signals are engaged or the headlights are on). That wire connects to...
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  • Parts Needed to Add 7-Way and Brake Controller to 2000 Ford F-350
    First thing your 2000 Ford F-350 needs is the correct 7-way adapter confirmed as a fit for your truck. For that you'd want the part # 118243 which plugs into the factory wiring of the truck and comes with all of the needed relays and fuses. Next you'll need the install wiring adapter as well as a brake controller. For a brake controller I would recommend the Prodigy P3 Brake Controller part # 90195. This is our best selling brake controller because of how well it works and how easy it...
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  • Left Turn Signal Not Working on 7-Way Trailer Connector at Rear of 2005 F-250 Super Duty
    On your 2005 Ford F-250 you'll want to start by testing the 3 O'clock and 9 O'clock pins on the truck side connector with a circuit tester like # PTW2993. Clean the pins free of any corrosion. if you're not getting signal there, use the tester and test the wires coming out of the back of the 7-way along the harness. Keep an eye out for any kinked or damaged places on the wiring that could be causing the issue. If you're still not getting anything, then you'll want to check for a blown...
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  • Is There a Plug-and-Play Replacement OEM 7-Way Harness for the 2003 Ford F-350 6.0 Diesel
    I confirmed with TowReady that their OEM replacement 7-way harness, part # 118243, fits the Ford F350 for model years 1999 through 2001. They do not offer a replacement plug-and-play harness with 7-way that will directly mate with your gray Ford OEM connector. They indicated that this is available only from Ford. We do offer a TowReady combination 7-way/4-way trailer connector with round plug, part # HM40975, which is a confirmed fit for the 2003 F350 Super Duty. You can use this in conjunction...
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  • Will the Ford Replacement OEM Tow Package Wiring Harness # 118243 Fit a 2002 Ford F350 SD
    I spoke with my contact at Tow Ready and he said that the Ford Replacement OEM Tow Package Wiring Harness, # 118243, is for use on the 1999 to 2001 model super duty trucks. This harness may plug into the factory connector, but the pin layout changed between the 2001 and 2002 model years. I read the review by JB350 that you referenced and the harness may very well plug in, but due to the pin configuration, there could be issues with the functions. We have not performed testing nor has...
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  • Only Running Light Circuit Works on 1999 Ford Expedition 7-Way Trailer Connector
    The problem that you have with the 7-Way on your 1999 Ford Expedition could be a dirty or corroded trailer connector. Make sure that the connector is clean and free of corrosion inside, where the wires attach, and outside on the pins themselves. Also check for loose or damaged wires and fix as needed. If you still have problems then it could be a fuse or relay related to the tow package wiring. There are several on your Expedition: In-cab fuse box: Location 23 for trailer tow battery...
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  • Setting Up a 1999 Ford F-350 To Tow Trailers with 4-, 5-, 6-, and 7-Way Connectors
    There are adapters for stepping trailer connectors down like going from a 7-Way to a 6-Way, but going the other way requires extra wiring. The simplest way for you to set up your truck to be able to tow 7,6,5 and 4-Way trailer connectors is to start with a 7-Way and use adapters when necessary. Fortunately, the 99-01 Super Duty trucks from Ford are pre-wired to support all 7 functions and there is a simple plug and play 7-Way that will get your truck set up with a fully functional 7-Way...
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  • Adding a 4- and 7-Way Connector to a 2003 Ford F-250 with Missing Factory Connector
    I have a solution to add a 4- and 7-Way connector to the back of your 2003 Ford F-250 with the missing factory connector. It will require 2 parts. First, I recommend harness # 40167. You will just use the wiring harness part of this kit and not the 7-Way. Then, instead of using the included 7-Way, I recommend # HM40975 to add a 4- and 7-Way to the back of the truck. I have included links to review videos for these parts for you.
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  • Parts Needed To Install Tekonsha Primus IQ Brake Controller # TK90160 On 2000 Ford F-350
    If your 2000 Ford F-350 has a factory 7-way, all you will need is the Tekonsha Wire, part # 3035-P, to install the Tekonsha Primus IQ Brake Controller, part # TK90160. One end will plug into the back of the brake controller, the other to the brake controller port located underneath the dash towards the center. The brake controller port will be tucked up and out of the way and may be hidden by wires (see video). If your F-350 just has a factory 4-flat connector, in addition to part # 3035-P,...
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  • Troubleshooting Trailer Wring Problem on Trailer towed by 2000 Ford F250
    The first thing you'll want to do is determine if the problem lies with the vehicle or trailer. Use a circuit tester like part # PTW2993 to test each pin on the trailer connector as its function is activated. I've linked you to an FAQ article that shows what the function of each pin is. If the trailer connector isn't showing power, keep in mind that there can be more than one fuse box on a vehicle. The main box under the hood usually has the tow package fuses, but on certain models of...
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  • Need OEM Rectangular Socket to 7 Way Adapter for 2001 Ford F-250 Super Duty
    For your 2001 Ford F-250 Super Duty you will need the Ford OEM Tow Package Wiring Harness, # 118243. This harness plugs directly into the standard OEM connector shown in your picture and fuses and relays are included. I have attached an installation video for you.
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    Image 1 for
  • Recommended Wiring Harness for 2005 Ford Escape Towing a Trailer with Lights
    It sounds like you are trying to install a 7-way onto your 2005 Ford Escape. I have a solution for you but the # 118243 you were looking at is not a confirmed fit for your vehicle. For your 2005 Ford Escape, if you do not have the tow package you will need the # 118426 and # ETBC7 to adapt your 4-way to the 7-way connector. I have linked an installation video of the Tow Ready harness to this page for you to check out. If you do have the tow package on your Escape you will need # 40455...
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  • Replacement 7-Way and 4-Way Recommendation for 1999 Ford F-250
    For a 7-way harness that will plug into the square trailer wiring connector of your 1999 Ford F-250. You would want the part # 118243 which is a confirmed fit. I attached an install video for you to check out as well. If you wanted to swap out the 7-way with one that includes a 4-way as well you could use the part # HM40950 to get both.
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  • Installation Video for Tekonsha Prodigy P2 Trailer Brake Controller # 90885 on 2001 Ford F-250
    Yes, the same installation process shown in our video for the Tekonsha Prodigy P2 Trailer Brake Controller # 90885 on a 2000 Ford F-250 will also apply to your 2001 Ford F-250. Our local customers that come in for installations allow us to record the process and this is where our videos come from. We haven't had the chance to install a Prodigy P2 on a 2001 Ford F-250 as of yet. When installing the P2 on your F-250, I recommend using the Tekonsha Plug-In Wiring Adapter for Electric Brake...
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  • No Power to Tow Package Fuses on a 1999 Ford F-250
    If there is no power to the tow package fuses then it either means that the relays associated with the tow package wiring are bad or missing or that the contacts in the power distribution box for those fuses are not present. The best way to test a relay is to use a known good one in place of a bad one. If the function starts working then you know that was the issue. We do not carry the relays by themselves so you would need to get them from a Ford dealer. Fuses and relays get fed power...
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  • Replacement 7-Way Harness for 2004 Ford F-350
    It sounds like you have the factory 7-way and while there is a replacement wiring harness available the part you mentioned, the Ford Replacement OEM Tow Package Wiring Harness # 118243, is not a fit for your 2004 Ford F-350. This harness is only a fit for F-250 and F-350's from 1999 to 2001 that have a factory 4-way. Instead you will need the Reese Multi-Plug Wiring Harness for Factory Tow Package # 74682 which does have a round plug and fits an' 04 Ford F-350 so long as you have the factory...
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  • Troubleshooting Tow Ready Custom Fit Vehicle Wiring, # 118243 Not Working on a 2001 Ford Super Duty
    If you are not getting any power or signals, or limited signals to the 7-Way on the Tow Ready Custom Fit Vehicle Wiring, # 118243, then the problem could be with the fuses and/or relays that came with it. If not installed, they will need to be. If the truck already had some and you did not replace the factory ones with the replacements, the old ones may be bad and need to be replaced. According to the installation details, which I have linked for reference, you will need to consult your...
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  • How Can I Replace The OEM 7-Way Plug On A 1997 Ford F-250 HD?
    I do have a potential solution for you, but I do not have a 7 way harness that will plug in to the round plugs you described. I recommend using a pre-wired connector like part # 20023. You will have to do a bit of cutting and splicing, and this kit comes with everything needed to do so. This comes with a 7' wire lead, so you may have to cut it down to size. Wire colors are not universal, so using a wire probe like part # PTW2993 can make determining wire function much easier. I have included...
    view full answer...
  • 7-way/4-Way Trailer Wiring Recommendation for 1999 Ford F-250 with Factory 4-Way
    For what you are trying to do the only option is to use the part # HM40975 for the 7-way/4-way and bracket and then use the part # 118243 for the relays, fuses and harness. Most of what you are paying for with the part # 118243 is everything but the 7-way connector. Just the harnesses and relays/fuses are available separately. But even if they were the price wouldn't be that much different.
    view full answer...
  • 7-Way Trailer Wiring Recommendation for a 1999 Ford F-250
    Sounds like you are looking for a connector like the part # 118243 which includes the portion of the harness that has the square connectors. The # 20119 does fit your truck, but the round connector of this product plugs into the round connector that plugs directly into the back of your 7-way socket. I attached install videos for both products for you to check out as well.
    view full answer...
  • 7-Way Trailer Wiring Connector Recommendation for a 1999 Ford F-250 with Factory 4-Way
    To wire in the # HM40975-11998 would require a couple fuses and relays. Your best option is going to be to get the # 118243 instead as it comes with the fuses and relays needed. It also has a square connector that will mate right up to the trailer wiring connector you have on your truck already. Trying to install the harness you have would be quite a headache. I would strongly recommend you get the part # 118243. I attached an install video for this harness for you to check out as well.
    view full answer...


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