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

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

Part Number: 118243
In Stock
$60.93
Retail:$80.86
You Save: 25%
Custom Fit Vehicle Wiring

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1-800-940-8924 to order Tow Ready custom fit vehicle wiring part number 118243 or order online at etrailer.com. Free expert support on all Tow Ready products. Great prices and Fastest Shipping for Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty). Custom Fit Vehicle Wiring reviews from real customers.
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Tow Ready Custom Fit Vehicle Wiring - 118243

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


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.

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

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   (408 Customer Reviews)


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

Excellant product, fast delivery



by:
2002 Ford F-350

Very good service and fast shipping



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

Perfect fit



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

exact fit. Installed in seconds



by:

recieved order quickly



by:

Great product would buy again.



by:

Plugged right in no issues what so ever. Great Product!



by:
2001 Ford F-250 and F-350 Super Duty

Real easy install and works great! Got it at my PO box in 2 days. A+++



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

Everything I bought was an exact match. No Regrets



by:
2003 Ford F-250 and F-350 Super Duty

Product was exactly what i needed, couldn't find easily any other site.
Was surprised to receive order in 3 days.



by:

Very complete package. This is a replacement for the factory unit that failed after being damaged. Fair price and very fast shipping.



by:

Your product was easy to locate, matching up with the picture was very helpful, and shipping was good timing Thanks Bob



by:
2001 Ford F-250 and F-350 Super Duty

Product hooked up onto the truck perfectly! Everything I needed was included (fuses, plug wires) and in New condition. Everything was shipped right away. Thanks!!



by:

product showed up on time and was very easy to put together will deffinitly use etrailer again



by:

Product was as expected, along with instructions. Arrived right on time and Thank you. Will use etrailer again.



by:
1999 Ford F-350 Super Duty

Worked and fit perfectly with my 1999 F350 Diesel, 4x4, Dually.

Very fast order processing and arrived in 2 days as promised. Made it time so we could go camping.

Thanks for the great service.

Matthew



by:

Product was exactly as described. It shipped fast & arrived safely. I highly recommend etrailer to all my friends!



by:

High quality. Fits like OEM. Works great. My OEM had a 3 prong pigtail and the 7 prong. I wish this had both as well but no big deal. Easy enough to wire in.



by:

It came on time and installed easy! Wonderful tracking there, always knew when it was going to get hear. Thanks etrailer!



by:

FIXED ALL MY PROBLEMS I BOUGHT A WIRING HARNESS FROM AUTO ZONE STATRED TO HAVE PROBLEMS INSTALLED THIS ON MY TRUCK FIXED EVERYTHING THANKS E TRAILER STEVE



by:

Fast, smooth installation!Super fast, and easy installation in under 30 minutes. For the price I think they could have sealed the wiring going into the plug. I still would highly recommend this product. Thanks!



by:

fit like its supposed to and worked like a charm. would be nice if it came with a bracket, but not a big deal. I'm happy with the price and the quality.



by:

great kitgreat kit, plugs right up to factory harness. just need to get bracket to hold plug it doesn't come with one. well worth the money, I will buy from them again.



by:
Ford F-350 Super Duty

Ordered OEM wiring harness for F-350. Arrived quickly, breeze to install,and came with new fuses and relays, nice touch.Much cheaper than from dealer and worked perfectly.Solved all my trailer lighting issues.Thanks!



by:

This was the perfect replacement for thefactory part. After 11 years of service the one in my truck had a couple of issues, so of to the dealer I went. They wanted 180 bucks for the "ford" part.

So glad that I found etrailer.com They saved me a bunch of cash and provided great service.


So glad that I found etrailer.com They saved me a bunch of cash and provided great service." />

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Show More Reviews

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

  • 12-Volt Accessory Power Feed on 2008 Ford F250 is Not Charging Travel Trailer Battery
    In order to activate the 12-volt accessory power feed to the 7-way, there is a fuse and a relay that need to be installed in the fuse box under the hood. Your owners manual or the legend on the fuse box lid will show you the correct location. If the accessory circuit once worked in the past, check for a blown fuse or a bad relay. If the fuse and relay are already in place and are not faulty, please get back with me and will will look into some other less likely possibilities. Keep in...
    view full answer...
  • Where To Install Fuses and Relays From Tow Ready Wiring Harness # 118243 on 1999 Ford F-250 SD
    On your 1999 Ford F-250 Super Duty the two boxes in the engine compartment are the power distribution box (larger box) and the trailer tow relay block (smaller box) which is attached to it. Open the covers to access the relays and fuses. You will need to look in your owners manual and locate the Trailer Tow Electric Brake and Trailer Tow Battery Charge fuse locations and insert the 30 amp maxi-fuses (provided) into them. Also in the owners manual locate the Trailer Tow Backup Lamp Relay...
    view full answer...
  • Weak Trailer Brakes on 5th Wheel Trailer Using Factory Integrated Brake Control on 2015 Ford F-250
    The trailer brakes are probably equally as weak with the brake pedal pressed on your 2015 Ford F-250 it just doesn't feel that way because the truck itself is also braking. Nine times out of ten the issue can be resolved by adjusting the brakes on the trailer. When adjusting trailer brakes you will want to hear a slight but constant drag of the pads on the drums when the wheels are turned. To see how this is done check out the video I attached. Fast forward to the 4:30 mark. To adjust the...
    view full answer...
  • How to Add a 4 and 7-Way Trailer Connector to a 1999 Ford F-250 with Square Plug
    In order to receive a wiring harness for your 1999 Ford F-250 that plugs into the square tow package wiring port and provides you with both 4 and 7-way trailer connectors you are going to want to purchase the Ford Replacement OEM Tow Package Wiring Harness part # 118243 and then swap out the included trailer connector for the Hopkins Endurance Multi-Tow 7-Way RV and 4-Way Flat Trailer Connector part # HM40950. Unfortunately, we do not offer a wiring harness for your 1999 Ford F-250 that...
    view full answer...
  • 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...
    view full answer...
  • 1999 Ford F-250 No Trailer Running Lights Even After Replacing 7-Way Connector
    I know you said you checked the fuses, but on your 1999 Ford F-250, the Power Distribution Box and Trailer Tow Relay Blocks are located in the engine compartment near the brake master cylinder, not to be confused with the Fuse Panel located below and to the left of the steering wheel. There is only one fuse that is tied to your trailer running lights inside the Fuse Panel: Fuse Location 28 - 10 amp - Brake Shift Interlock, DRL Relay Coil, Speed Control Module, Backup Lamps, Trailer Tow...
    view full answer...
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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.
    view full answer...
  • Recommended 5th Wheel to Gooseneck Wiring Adapter on 1999 Ford F-250 & 350 Super Duty w/Factory Plug
    Good news, I can help. Your year and model of Ford truck was made with two styles of connectors when they were being wired in at the factory. This means you will need to look at your factory 7-way under you vehicle and see if the back of the 7-way connector has the round adapter or if it has a molded cable that leads back to a rectangular connector on the drivers frame rail. I've attached an image of the two for you to better see. If you have the factory round connector on the back...
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • Recommended 7-Way Wiring Harness for 1999 Ford F-350
    Assuming you have the factory 4-flat, the easiest solution is the Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty) # 118243. This includes the necessary fuses and relays which will give you all of the functions you have described and the ability to use the Redarc Tow-Pro Liberty Brake Controller # RED24FR. If the 4-way connection on your truck is not the factory 4-way then you would need the # ETBC7 instead. This is a universal kit so the installation is a little more...
    view full answer...
  • Which 7-Way For 2001 Ford F-350 Super Duty
    Based on how you described it, I'm guessing your 2001 Ford F-350 Super Duty needs a different part than the # C55774, but what does the plug look like? The correct 7-way is going to depend on that, as the Curt option you mentioned is a replacement 7-way, and has a round plug, while the other has a more square plug. If you take a look at the accompanying photos, you can see the plugs for the two 7-ways that could work for your '01 F-350: - Square Plug: Ford Replacement OEM Tow Package...
    view full answer...
    Image 1 for Image 2 for
  • 7-Way and 4-Way Combo Recommendation for a 1999 Ford F-250 with 4-Way
    It sounds like your 1999 Ford F-250 has a factory 4-way and you are looking to upgrade it to a 7-way plus a 4-way and you want to do this as simply as possible. The easiest way to do this would be to get the # 118243 as well as the # HM40975, use the harness and fuses relays from the # 118243, and then use the connector of the # HM40975.
    view full answer...
  • Trailer Wiring Harness Recommendation for 1999 Ford F-250
    For your 1999 Ford F-250 the correct 7-way trailer wiring harness you would want is the # 118243 which is a confirmed fit. I attached an install video for you to check out as well that shows this installing in a 1999 F-250 just like yours.
    view full answer...
  • Fifth Wheel Trailer Wiring Harness Recommendation for 2002 Ford F-250
    For your 2002 Ford F-250 we have the Hopkins 7-Way Fifth Wheel Harness part # 40167 which is very similar to the # 118243 except designed to fit your specific vehicle. As long as you have the factory 7-way harness at the rear of your truck this is designed to fit and work well. I attached an install video for this for you to check out too.
    view full answer...
  • Replacement 7-Way/4-Pole Trailer Connector for 2003 Ford F-350
    Assuming your existing factory 7-way has been damaged or has gotten corroded or worn over the years, go with the Hopkins # HM40975 which provides both a 4-pole and a 7-way. Simply unplug the tow package wiring harness from the rear of your existing 7-way, remove the 7-way and its bracket, and install the # HM40975. Using a small amount of dielectric grease like part # 11755. This is actually the same connector used on current model Ford Trucks. You can see an install video by clicking...
    view full answer...
  • Troubleshooting No Running Lights on 7-Way Square Plug for 2000 Ford F-350 Super Duty
    Thank you for all of the details! Troubleshooting trailer lights can be frustrating and it sounds like you've already put in a lot of effort. If the connector sending the signals on the truck side has all of the functions active and operating properly then you can simply replace the factory 7-Way connector on your 2000 Ford F-350 Super Duty with either the Tow Ready # 118243. If the problem is that the square connector for the trailer functions on your F-350 ISN'T sending power then there...
    view full answer...
    Image 1 for
  • Where Does The Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness # 40167 Connect?
    The grey connectors on the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness # 40167 plug in line of the factory 7-Way # 118243 on the 2002-2004 Ford F-250 & F-350. This connector will be behind your rear bumper.
    view full answer...
  • Replacement 7-Way for 2002 Ford Excursion
    There are replacements for the factory 7-way on your 2002 Ford Excursion but part # 118243 will not fit. Instead I recommend the Reese Multi-Plug Wiring Harness for Factory Tow Package # 74682 which will plug directly into the 7-way socket of your '02 Excursion (assuming you have the factory tow package) and provide you with a 7-way and a 4-way. I've added a link to a video review of this harness for you to take a look at.
    view full answer...
  • Troubleshooting Not Being Able to Find Fuse Slot Listed in Owner's Manual of Vehicle
    I am not totally sure what your vehicle is, but sometimes there can be more than one fuse box on a vehicle and you may be looking at the wrong diagram or box. Check to see if there is a fuse box on the interior of your vehicle as well as one under your hood.
    view full answer...
  • Second 7-Way Recommendation for a 2000 Ford F-350
    For a second 7-way you would the part # HM40157. This uses the square connectors like the # 118243 which is what you would have on your 2000 Ford F-350. This will plug inline with your current 7-way harness to provide you with an additional 7-way for you to install at the rear of your truck.
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  • How to Convert Hydraulic Drum Brakes to Electric Over Hydraulic EOH
    In order to convert the hydraulic drum brakes you have on your trailer to electric over hydraulic (EOH) you will need a electric over hydraulic actuator, breakaway kit, brake controller, trailer wiring harness, and trailer coupler. We do have all of these components for you but not in an all inclusive kit. For the electric over hydraulic actuator, breakaway kit, and trailer wiring I recommend the HydraStar Marine Electric Over Hydraulic Actuator part # HS381-9065. This kit contain the...
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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...
    view full answer...
  • Replacement Trailer Connector and Factory Wiring Harness for a 2000 Ford F-250
    The Ford Replacement OEM Tow Package Wiring Harness part # 118243 is indeed a fit for a 2000 Ford F-250. It will replace the 7-way trailer connector as well as part of the trailer wiring harness from the square pigtail onward. I would not have any options to replace any part of the factory trailer wiring harness up to the square pigtail.
    view full answer...
  • Mounting Bracket for a 7-Way Harness on a 2000 Ford F-350 Super Duty
    I would be happy to help you. To install the Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty) item # 118243 on a 2000 Ford F-350 Super Duty you will want to use the Pollack Mounting Bracket and Installation Hardware item # PK12711U. The holes in the mounting bracket are oblong so you will have an easier time getting your 7-way connected.
    view full answer...
  • 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.
    view full answer...
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