Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty)
(398 reviews)
Price: $63.13
Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty)
Our Price: $63.13
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Tow Ready Custom Fit Vehicle Wiring
- Custom Fit
- Trailer Hitch Wiring
- 7 Round - Blade
- 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
Picture of 7-Way Connector.
118243 Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty)
Item # 118243
Installation Details
This Product Fits The Following Vehicles
- 2000 - 2002 Winnebago Adventurer Motorhome with factory Tow Package
- 2000 - 2001 Tiffin Allegro Motorhome with factory Tow Package
- 2000 - 2002 Fleetwood Bounder Motorhome with factory Tow Package
- 2001 - 2001 Winnebago Brave Motorhome with factory Tow Package
- 2000 - 2000 Coachmen Catalina Motorhome with factory Tow Package
- 1999 - 2001 Ford F-250 Super Duty with factory 4-Flat
- 1999 - 2001 Ford F-250 Super Duty with factory 4-flat
- 1999 - 2001 Ford F-350 Super Duty with factory 4-Flat
- 1999 - 2001 Ford F-350 Super Duty with factory 4-flat
- 1999 - 2001 Ford F-350, 450, and 550 Cab and Chassis with factory 4-Flat
- 1999 - 2001 Ford F-350, 450, and 550 Cab and Chassis with factory 4-flat
- 1999 - 2001 Ford F-53 with factory Tow Package
- 2000 - 2002 Fleetwood Flair Motorhome with factory Tow Package
- 2000 - 2002 Coachmen Mirada Motorhome with factory Tow Package
- 2000 - 2001 Fleetwood Pace Arrow Motorhome with factory Tow Package
- 2000 - 2001 Fleetwood Pace Arrow Vision Motorhome with factory Tow Package
- 2000 - 2000 Gulf Stream Palm Breeze Motorhome with factory Tow Package
- 2002 - 2002 Coachmen Pathfinder Motorhome with factory Tow Package
- 2000 - 2001 Coachmen Santara Motorhome with factory Tow Package
- 2000 - 2001 Fleetwood Southwind Motorhome with factory Tow Package
- 2000 - 2000 Fleetwood Southwind Storm Motorhome with factory Tow Package
- 2001 - 2002 Fleetwood Storm Motorhome with factory Tow Package
- 2000 - 2001 Gulf Stream Sun Voyager Motorhome with factory Tow Package
- 2002 - 2002 Itasca Suncruiser Motorhome with factory Tow Package
- 2000 - 2001 Gulf Stream Sunsport Motorhome with factory Tow Package
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Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
- Wrong item was ordered
- etrailer mistake
- Alternate product found
Customer Reviews
Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty) - 118243
Average Customer Rating: 4.8 out of 5 stars (398 Customer Reviews)
by: Tim U.04/05/2012
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: Gordan05/21/2023
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: Earl 04/05/2023
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: Dale07/16/2022
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: Kevin02/02/2018
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: Steve02/25/2019
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: Matthew12/08/2021
Excellent harness for my super duty. After using one year with multiple trailers it's still working great.
Comments
Still working great after one year.
Matthew - 12/12/2022by: Kevin06/01/2022
It worked great, I simply removed the old one and replaced it with yours and everything is working fine. Thank you.
Comments
Great, I have pulled several different trailers all lights work. No problems.
Kevin - 06/02/2023by: Justin E12/17/2022
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: Josh02/15/2023
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: John S.11/07/2020
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.
Comments
One year later and it has performed flawless!
John S - 11/08/2021by: Marvin 10/05/2022
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: Gary06/15/2022
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
Comments
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?
-- 
Jenny N - 06/22/2022Yes ma’am, it came from Ford that way F-450 platinum, all options. Let me know if you carry the dual plug together,please
-- comment by: Gary - 06/22/2022What is the year of your Ford?
-- Jenny N - 06/22/20222016 F-450 Platinum Dually
-- comment by: Gary - 06/22/2022I 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.
-- Jenny N - 06/22/2022by: Dina06/14/2023
Exactly what I needed. Fit perfectly.
by: John 04/25/2023
The parts arrived in an orderly time and were exactly what I ordered. Thank you for your great customer service.
by: Manny 08/12/2022
Ford F-250 Super Duty
2001 Ford F250 wiring tow harness was a perfect fit. Plug n play.
by: Jean03/10/2023
2001 Ford F-250 Super Duty
Did not receive at address listed on or der.
Comments
Well that does not sound good! Lets look into this a bit more. Was it received at a previous address or not at all? You should check with your neighbors to see if they accidentally got it in your place. Our customer service department is looking into this and will be in contact with you shortly.
-- Katrina B - 03/12/2023by: Gary 05/04/2023
2001 Ford F-350 Super Duty
Exactly what was needed.
by: Russell 12/19/2021
Great product and seller.
Comments
Working just fine.
Russell - 12/20/2022by: Ed G.09/15/2014
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!
Comments
Still works fine!
Ed G - 09/18/2015by: Brandon 04/21/2023
1999 Ford F-250 Super Duty
Arrived Quickly
by: Susan 03/09/2023
Fast delivery. Easy ordering for reasonable price. Will buy again.
by: Ryan R.04/15/2019
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: Robert 02/28/2023
Delivery was quick and item exactly what I need.
by: Matt 03/02/2023
Very nice customer service
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398
Show More Reviews
See what our Experts say about this Tow Ready Custom Fit Vehicle Wiring
- No Power to Tow Package Fuses on a 1999 Ford F-250If 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...
view full answer... - How to Determine Where the Fuses and Relays of Ford Replacement Harness # 118243 install on F250You will need to locate the vehicles power distribution box and the trailer tow relay block attached to it. This is under the hood on the driver side. You will need to open the cover to access the fuses. The information for where the fuse locations are will be in the owners manual of your vehicle or even if there is a legend on the fuse box cover you can use that. You will be looking for the trailer tow electric brake and trailer tow battery fuse locations. For the relays you will be looking...
view full answer... - Would the Ford Replacement 7-Way Harness # 118243 fit a 2000 Ford F-250 with HarnessThe 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 than...
view full answer... - What is the Best Way to Check to See if a Relay is Bad on a 2008 Ford F-250The easiest way to check a relay is to pull the relay and then insert a new one. I would say that it is likely a relay issue since you stated you checked all the fuses already. Use the vehicle owners manual to find the locations of the relays related to the tow package wiring. Before you change out a relay and reconnect the trailer you will want to be sure to determine what caused the problem in the first place. A short on the trailer could have caused this issue and unless it is fixed...
view full answer... - Where to Install the Relays and Fuses in a 2001 Ford F-250 to make the 7-Way FunctionalOn your 2001 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... - No Power at Trailer Connector on a 1997 Ford F-250There may be a relay that is bad. Use the owners manual to find the relay locations related to the tow package wiring. To test a relay you basically have to take a known good relay and install it in place of the possible bad one. If the function starts to work then that was the issue. If the fuse and relay are both good but there is still no power getting to the fuse that indicates a problem with the truck wiring somewhere that will have to be checked out by a qualified mechanic or Ford...
view full answer... - Troubleshooting Right and Left Turn Lights and Brake Lights Not Working on a 2003 Ford F-250 7-WayYou have done a great job troubleshooting the problem so far and have isolated the issue to the truck wiring. I have confirmed with my contact at Tekonsha, and another fuse that you might check would be fuse # 6 in the under dash junction box. This is a fuse for the trailer towing light relay. This will be a 20 amp fuse. This sounds like this is the fuse that is most likely causing the issues on your 2003 Ford F-250, since you do not have either brake or turn signals. The # 6 fuse is...
view full answer... - Troubleshooting a Weak Right Stop/Turn Signal Circuit in the Bed of a 2002 Ford Super DutyIt very well could be a dirty connection or a short somewhere on the circuit. I would start at the back of the connector in the bed of your truck checking it for corrosion and then trace the circuit back checking for cut or exposed wire and fix as necessary. I do think its most likely corrosion either on the front of the connector, the back of the connector or where it connects to the 7-way at the bumper. I attached an FAQ article on trailer wiring that you might find informative also.
view full answer... - What Relays Needed in 2001 Ford F-250 Super Duty V10 4x4 to Activate the 12V Circuit on 7-WayThe relays you need to activate the 12V charging circuit for your 5th wheel are not offered separately at etrailer. These should be available from your local Ford dealer or auto parts store. There should be indications in your owners manual and/or labels on the relay boxes to indicate the location and type of relays required to activate your trailer charging circuit. The relays included in the part you referenced, TowReady Ford Replacement OEM Tow Package Wiring Harness # 118243, are...
view full answer... - Running Lights Stopped Working on Horse Trailer Towed by a 2003 Ford F-350Running/tail lights are on the same circuit on your 2003 Ford F-350. The likely problem is a blown fuse or relay associated with the running light circuit. Use the truck owners manual to find all the locations of the fuses and relays used for the tow package wiring. Checking fuses is easy but to check a relay the easiest thing to do is to place a known working relay in place of a possible bad one. If the function then starts working then you know it was a relay. I have linked a help article...
view full answer... - Where to Install the Relays that Come with Tow Package Wiring Harness # 118243 on a 1999 Ford F-250I went over those instructions for the Ford Replacement OEM Tow Package Wiring Harness, # 118243, and other than the statement that they are located in the Power Distribution box, you are correct; it does not state specifically where the relays need to go. The information should be in your 1999 Ford F-250 owners manual. I did a little research and found the locations. The Trailer Tow Backup Lamp Relay is position #38 in the power distribution box. The Trailer Tow Charge is position # 39...
view full answer... - Troubleshooting Tow Ready Custom Fit Vehicle Wiring, # 118243 Not Working on a 2001 Ford Super DutyIf 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...
view full answer... - 12-Volt Accessory Power Feed on 2008 Ford F250 is Not Charging Travel Trailer BatteryIn 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... - Will the Ford Replacement OEM Tow Package Wiring Harness Provide a Fully Functional 7-WayYes, if you install this Ford Replacement OEM Tow Package Wiring Harness # 118243 it will be fully functional and would work to operate the lockout solenoid of your 1999 Ford Super Duty. You will need to install the included relays and fuses to complete all the circuits. Check out the installation instructions I attached for this product.
view full answer... - Location of Back Up Lamp and Battery Charge Relays in 1999 Ford F250 Super DutyIn my research, I managed to download a copy of the Owners Manual for the 1999 F250 SD. I found that the Trailer Tow Back Up Lamp Relay is in position # 38 and the Battery Charge Relay is # 39. According to the diagram of the various locations in the power distribution box, location # 38 and 39 are not shown. The manual goes on to say that 38 and 39 are located in a smaller box that should be found adjacent to the larger box (closer to the brake master cylinder). I also found the same...
view full answer... - Where To Install Fuses and Relays From Tow Ready Wiring Harness # 118243 on 1999 Ford F-250 SDOn 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... - Wiring Harness for 2000 Ford F-250 and F-350 Super DutyYes, as long as your pickup does not have the factory Deep Drop Bumper, and has the factory 4-flat connector, this kit will upgrade your trailer wiring to the 7-way connector and the fuses and relays will activate the brake and accessory functions at the connector.
view full answer... - Why do I need to replace the 7-way on my 1999 Ford F-350?The Ford Replacement OEM Tow Package Wiring Harness, item # 118243, upgrades your vehicle 4-flat OEM wiring to a 7-way connector to fit the plug on your trailer. It will also replace a damaged 7-way OEM wiring harness. So unless you either need to upgrade or replace your plug, you will not need this. To adjust a Voyager brake controller, you can make several slow stops around 25 mph, as if you are coming up to a stop sign, and take notice of how the trailer brakes respond. If the brakes...
view full answer... - Troubleshooting 1995 Ford F-350 that Lost Taillight Circuit After Trailer Wiring ShortOne of two things happened. Either you shorted out the truck's wiring before a fuse was able to blow or there is another fuse on that circuit that could have blown. Fusible links are often found on older vehicles. These can be hard to find but they are on the circuit to act as another fail safe in the event of a short. The best place would be to start where the trailer wiring harness splices into your vehicle's wiring and then work your way back up the circuit looking for fusible links,...
view full answer... - Parts Recommendation to Upgrade 4-Way of 1999 Ford Truck to 7-WayYes, 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.
view full answer... - Trailer Wiring Harness Recommendation for 1999 Ford F-250For 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... - 7-Way Trailer Wiring Harness Recommendation for 1999 Ford F-250Based 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...
- How Long is the Harness of the 7-Way Trailer Harness part # 118243The length of just the harness of the part # 118243 is 28 inches not including the 7-way.
view full answer... - Replacement Tow Package Wiring Harness for 2000 Ford F-250 Super DutyThe 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...
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Video Edited:
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Video by:
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Test Fit:
Nicholas E
Updated by:
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Updated by:
Alexander C
Updated by:
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