1. Custom Fit Vehicle Wiring
  2. Tow Ready
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 7 Blade
  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)

Item # 118243
lowest price pledge
Retail:$75.72
Our Price: $44.92
You Save: 41%
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.

Orders above $99 qualify for Free Shipping
Shipping Weight: 1.12 lbs
Quantity: 
In Stock
118243 - Custom Fit Tow Ready Trailer Hitch Wiring
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

Call 800-298-8924 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. Guaranteed Lowest Price and Fastest Shipping for Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty). Custom Fit Vehicle Wiring reviews from real customers.
  • All Info
  • Reviews (268)
  • Q & A (182)
  • Photos
  • Why etrailer?

Tow Ready Custom Fit Vehicle Wiring - 118243

  • Custom Fit
  • Trailer Hitch Wiring
  • Tow Ready
  • 7 Blade
  • 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.

Product detail
Product detail

Product detail

Product detailProduct detail


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 Reviews

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

Average Customer Rating:  4.8 out of 5 stars   (268 Customer Reviews)


- 118243
by:

I haven't had time to install it yet but it looks like a good quality part and the buying experience was great and a good price. 766248



- 118243
by:

Perfeect for damaged factory wiring! 747394



- 118243
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! 150980


Comments
Still works fine!
Ed G - 09/18/2015

15082

- 118243
by:
1999 Ford F-250 and F-350 Super Duty

Direct replacement for your F250-SD. Made the Job so easy it wasn't funny! Plug-N-Play. Great Product, Price, and Customer Service. 575639


Comments
Great
Thomas - 10/19/2019

62917

- 118243
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. 608007



- 118243
by:
2000 Ford F-250 Super Duty

Fits my 2000 F250 Superduty perfectly. I ordered this with the 7 and 4 pole trailer connector HM40975 since my boat trailer has the 4 pin. Too bad they don't sell the wire harness without the 7 pole if you go that route. Had to shim 3/4" for the bracket or the plug would be obstructed by the bumper. I'm very pleased with the result and service. 404065



- 118243
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. 187315



- 118243
by:

Perfect replacement for the broken original. Also added a gooseneck ball and wiring on 2nd truck.Also perfect 940538



- 118243
by:
1999 Ford F-250 and F-350 Super Duty

Easy plug and play. Great product. 936601



- 118243
by:
1999 Ford F-250 and F-350 Super Duty

Just what I ordered and worked perfect. Always a good experience dealing with Etrailer! 934952



- 118243
by:

919786



- 118243
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. 909339



- 118243
by:

Perfect fit and exactly what I need for the truck. Great purchase experience customer service was outstanding 908682



- 118243
by:

This harness was plug and play into my factory harness. It's worked well for a year. 905161



- 118243
by:
1999 Ford F-350 Super Duty

Perfect fit on my 1999 F350 Super Duty 7.3 904376



- 118243
by:

I worked exactly as expected 897680



- 118243
by:

Good price. Fast ship. Looking forward to Additional business. 897316



- 118243
by:

893541



- 118243
by:
1999 Ford F-250 and F-350 Super Duty

Perfect fit for my 1999 F350 893243



- 118243
by:
1999 Ford F-250 and F-350 Super Duty

892292



- 118243
by:
1999 Ford F-250 and F-350 Super Duty

Amazingly simple. The overview videos are a definate confidence booster. 872070



- 118243
by:

869430



- 118243
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! 822991



- 118243
by:

Works good 822788



- 118243
by:

Fast and easy installation took 30 minutes and was ready to go great item 820597


33
280
Show More Reviews

Ask the Experts about this Tow Ready Custom Fit Vehicle Wiring

  • 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 us usually a green wire...
    view full answer...
  • How to Add Bumper and In-Bed 7-Way Connectors to 1999 Ford F-350 with Factory 4-Way
    If your 1999 Ford F-350 Super Duty came with a factory 4-Way then all you need to add a 7-Way to your bumper and in the bed is the Tow Ready part # 118243 which plugs into the square/rectangular connector you're talking about and then a connector like the Bargman # 50-97-410. The Bargman just tees in to the US Car Connector on the Tow Ready part prior to connecting the Tow Ready 7-Way. I have attached sample installation videos that you can check out as well.
    view full answer...
  • Would the Ford Replacement 7-Way Harness # 118243 fit a 2000 Ford F-250 with Harness
    The Ford Replacement OEM Tow Package Wiring Harness # 118243 that you referenced is designed to work as a replacement for vehicles that came with a factory harness. So if you had a trailer wiring harness on there at one point and it got damaged you could simply just plug in the # 118243 and you would be ready to go. If your vehicle did come originally with a 4-way you would just need to install the two included fuses and it would be fully functional. This route would be much easier...
    view full answer...
  • Troubleshooting Brake Controller Install Where Turn Signal Stays On All the Time When Connected
    The brake controller install wiring of your van somehow is not wired correctly. Best option we have to get you on the road quickly is going to be to bypass all of the factory wiring and then hardwire the controller in. Most likely you can leave the power and ground wires of the controller connected to the factory wiring (black and white wires) but first try severing the red wire of the controller leaving enough room to reconnect it to see if the turn signal issue goes away. If so, then...
    view full answer...
  • 7-Way Trailer Wiring Harness Recommendation for 1999 Ford F-250
    Based on the picture you send in the correct 7-way trailer wiring harness you are looking for is the part # 118243 which matches the connector and is a confirmed fit for your 1999 Ford F-250. I attached an install video for this harness below for you to check out as well.
    view full answer...
  • 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...
  • Replacement Tow Package Wiring Harness for 2000 Ford F-250 Super Duty
    The Tow Ready Replacement OEM Tow Package Wiring Harness # 118243 can absolutely be used to replace the 7-way harness on your 2000 Ford F-250 Super Duty, as long as the square connector under your vehicle has not been damaged. The harness can be quickly installed by simply connecting it directly to the OEM connector under your vehicle. I have included the installation details for your review.
    view full answer...
  • 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.
    view full answer...
  • Trailer Running Lights Come on Even When Vehicle Lights Are Off After Re-Wiring Trailer Connector
    It sounds like you may still have a mis-wired trailer connector or that there could be a corrosion problem in the vehicle's trailer socket or on the trailer's plug. If your trailer's running lights are coming on as soon as you plug in the trailer connector (even when the truck lights are off) this tells us that power from another circuit is reaching the wiring for the running light circuit on the trailer. If you look at the photo I linked for you you'll see that the adjacent socket...
    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...
  • Adding a Functioning 7-Way Trailer Connector to a 1999 Ford F-350 with or without Factory Connector
    It sounds like your 1999 Ford F-350 either came with a factory 4-Way or no trailer connector at all. A dealership might be able to tell you what equipment the truck had based on the VIN so that is one thing you can try. Even if it came with a factory 4-Way you can still install a 7-Way with relative ease. First, follow those 4 wires you mentioned forward under the truck. If they plug into another square/rectangular connector then you can use 7-Way # 118243 which comes with the fuses...
    view full answer...
  • Parts Needed to Install 7-Way RV Trailer Wiring and Connector on a 2000 Ford Expedition XLT
    The Ford Replacement OEM Tow Package Wiring Harness, # 118243, is only designed to work as a replacement for Ford vehicles that came with the OEM wiring originally installed at the manufacturing plant, and is not designed to work with your Expedition. To make sure you have all the parts to install a working 7-Way wiring harness on your Expedition you will need a couple of items. First, if your 2000 Expedition does not have a working 4-Way flat trailer wiring harness, you will need...
    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...
  • Replacement 7-Way and 4-Way Trailer Connector for a 2005 Ford F-250 Super Duty King Ranch
    For a replacement 7-Way trailer connector for your 2005 Ford F-250 King Ranch you have a couple of options. You can use 7- and 4-Way # HM40975. Or 7- and 4-Way # C55774. Either of these replacement connectors comes with a mounting bracket and hardware. I have included a video on each connector for you. If you are looking for an exact match to the factory harness though you would need to get one from a Ford dealership.
    view full answer...
  • Recommended 7-Way Wiring for 1999 Ford F-350 Diesel Without Any Trailer Wiring Harness
    The Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty) # 118243 is for vehicles that had a factory 4-way connector, so the harness was present near the spare tire. Since you have no harness, you will need to first add the hardwired 4-way # 18252 which is easy to install. This will give you the 4-way flat trailer connector and then you will use # ETBC7 to add the 7-way connecting the other functions. This kit will utilize your new 4-way flat and then give you the wire,...
    view full answer...
  • Wiring Diagram that the Ford Replacement OEM Tow Package Wiring Harness # 118243 Uses
    If you check out the picture I attached the middle set of 7-ways is the wiring diagram/colors you'll need to use for the Ford Replacement OEM Tow Package Wiring Harness # 118243 that you referenced. The harness is already wired up correctly though so there wouldn't need to be any additional wiring.
    view full answer...
  • Replacement 7-Way Trailer Connector for a 2002 Ford F-250 Super Duty
    I can only confirm 7-Way trailer connector # 118243 as a fit for up to 2001 Ford Super Duty trucks. For a 2002 what you can do is use harness # 40167 which is designed as in-bed wiring for a 5th wheel or gooseneck trailer but would work just as well to add a 7-Way at the back of your truck.
    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...
  • Correct Trailer Wiring Harness for 2002 Ford F250 or F350
    The # 118243 harness you referrred to is compatible with 1999-2001 F250 and F350 models, and is not compatible with a 2002 model, which would explain why it's not working. Part # 74682 is shown as being the proper 7-way for a 2002 Ford F250 or F350. The 74682 would plug into the existing US Car connector under the vehicle, typically located on the driver's side frame rail.
    view full answer...
  • 2000 Ford F250 Super Duty with 7-Way Replacement Recommendation with 4-Way Adapter
    The 7-way harness part # 118243 is a confirmed fit for your 2000 Ford F-250 Super Duty so it would be a great option for a new 7-way and then to convert it to a 4-way the part # PK12716 would be a great fit. For just a 7-way bracket the part # PK12711U would work well too.
    view full answer...
  • Parts Needed to Install a 7-Way Trailer Connector on a 2011 Lincoln Navigator with Factory 4-Way
    What you will need in order to add a 7-Way to your 2011 Lincoln Navigator is the Adapter 4 Pole to 7 Pole and 4 Pole, # 37185. The # 118243 harness is actually for Ford Super Duty trucks. In order to install the adapter on your Navigator you will first plug the 4-Way you have into the back of the adapter. That will leave just 4 wires to hardwire to the vehicle. The white wire will need to be grounded to the frame of the vehicle. Yellow goes to the reverse light wire behind one of the...
    view full answer...
  • Replacement 7-Way Trailer Connector for 2001 Ford Excursion
    I'm not entirely sure what you're needing. The # 74682 is listed as a fit for your Excursion. It is designed to plug into the round US car connector that plugs into the back of the OEM 7-way. Further back on the wiring harness is a rectangular connector that resembles that shown on the # 118243. We don't offer that portion of the harness, if that's what you're needing, you'd probably need to obtain that from your Ford dealer. Another option would be the # HM40975-11998. You could...
    view full answer...
  • 7-Way Trailer Connector for 2000 Ford F250
    By 'square end', I'm assuming that the plug that connects to the factory harness is rectangular in shape? If that's the case, we offer a solution that would provide a 7-way, part # 118243. You could then use an adapter like # PK12716. If you didn't care to bother with an adapter, you could remove the 7-way included with the # 118243 and use # HM40975 which would provide both a 4-pole and a 7-way. You'd have the extra 7-way connector lying around, but you could always use it for a spare...
    view full answer...
  • Solution for Needing Just Harness of Ford OEM Tow Package Wiring Harness 118243
    The only way we offer a way to get the intermediate harness of the Ford Replacement OEM Tow Package Wiring Harness # 118243 is with the entire kit. I wish we had just the part you need but we do not. At least with this you'd have a backup 7-way, fuses, and relays. Other option might be to contact a Ford dealer.
    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.
    view full answer...
  • Parts Needed to Add a 7-Way Trailer Connector to a 1994 Ford F-350
    From what I was able to find, you will need to hardwire in a 7-Way using a 4 and 7 Way Installation Kit, # ETBC7. The Replacement OEM Tow Package Wiring Harness, # 118243, does not fit the 1994 Ford F-350. I have included a link to an FAQ and a link to a video showing a typical installation of the ETBC7 for you.
    view full answer...
  • Recommended Tow Package Wiring Harness for 2003 Ford F-250 Super Duty
    For your 2003 Ford F-250 Super Duty, the Tow Ready Replacement OEM Tow Package Wiring Harness # 118243 is not a compatible fit as it only fits the 1999-2001 models of the F-250. If you are looking to replace an existing connector, I recommend the Tekonsha Replacement Multi-Tow Connector # 74682. If your vehicle has an existing 4 pole connecter, you can use the Hopkins Pollak 7-Pole and 4-Pole Trailer Connector Sockets # HM40975-11998. You can unplug your existing 4-pole and wire the...
    view full answer...
  • Adding a 4- and 7-Way Trailer Connector on a 2004 Ford F-350
    In order to install a 4- and 7-Way on your 2004 Ford F-350 you will first need to install # C55265. This will plug right into the port in the picture you sent. It does look like there are some loose wires there that you will need to hardwire to a 7-Way. For a 4/7-Way I recommend # 37185. the 4-Way will plug into it and then you will need to hardwire the remaining wires. White is ground and should attach to the truck frame. Blue is output to electric brakes. Black is 12 volt power. Purple...
    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...
    view full answer...
  • 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 # 40376. 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...
    view full answer...




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality custom fit vehicle wiring for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate custom fit vehicle wiring information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Expert Research:
Jackie C
Expert Research:
Mike L
Expert Research:
DeAnne T
Expert Research:
Robert G
Expert Research:
Michael H
Expert Research:
Jeff D
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Brandon M
Expert Research:
Adam R
Expert Research:
Lori W
Expert Research:
Rachael H
Expert Research:
Jeffrey L
Video Edited:
Zack K
Video by:
Joshua S
Test Fit:
Nicholas E
Updated by:
Laura H
Updated by:
Alexander C
Updated by:
Isabelle B

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.