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

Ford Replacement OEM Tow Package Wiring Harness, 7-Way

Item # 118242
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Custom Fit Vehicle Wiring

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Tekonsha 7 Round - Blade Custom Fit Vehicle Wiring - 118242
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Tekonsha Custom Fit Vehicle Wiring - 118242

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

  • Exact Replacement for Damaged OEM Wiring Harness
  • Installs in Seconds on Vehicles not Factory Pre-Wired
  • Upgrades Vehicles From 4-Flat OEM Wiring to 7-Way Connectors
  • Connects Directly to Standard OEM Connector
  • Fits mounting bracket PK-12711U (sold separately)
  • Fuses and Relays Included
  • Can only be used with a factory 4-pole harness
    • This will not work with a factory 7-pole harness

Product detail

Picture of OEM Connector. The plug is usually located on the driver's side between the back tires and the end of the truck bed.

Product detail

Picture of the 7-Way Connector

118242 Ford Replacement OEM Tow Package Wiring Harness, 7-Way

Installation Details 118242 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Video of Ford Replacement OEM Tow Package Wiring Harness, 7-Way

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

Video Transcript for Tekonsha Custom Fit Vehicle Wiring - Trailer Hitch Wiring - 118242 Review

Today we're going to be taking a look at the Ford Replacement OEM Tow Package Wiring Harness with a seven way connector. This product fits numerous vehicles, so to make sure it works with your particular year and model, you can use the vehicle fit guide located on our website at This is an exact replacement for your damaged OEM wiring harness. It's going to install quickly and easily, and it upgrades vehicles from a four flat OEM wiring to a seven way connector. The existing four way flat harness on your vehicle will still be functional. The unit's designed to connect directly to the standard OEM connector, you can see right here everything that it comes with. Your going to get the actual harness, your going to get your new seven way connector, plugs into this port right here on the harness.

Your going to get a hardware kit that's going to include two zip ties, detailed instructions, and your going to get the necessary fuses and relays. The connector right here, to make sure this is easily accessible at the back of your vehicle, we recommend using a mounting bracket. This is going to fit mounting bracket PK-12711U. That item is sold separate if your wanting to add a bracket to the vehicle for your seven way connector. You can find it here at Now when it comes to installing the unit, you'll need to disconnect the vehicles negative battery cable, install the included fuses and relays according to the detailed instructions, locate the vehicles wiring plug that's going to be located in the rear underneath the vehicle, inside the driver's side frame rail.

Separate the plugs on the vehicle, and then install the trailer tow harness between mating plugs. These connectors are going to match up perfectly, they're going to snap lock together for a nice tight secure fit. Once you have those connected, make your ground connection, that's going to be you white wire with the inaudible 00:01:37 attached to it. That's going to get connected by using the existing ground stud on your frame rail, and then plug the seven way socket into the harness on this side. Push it in until it snaps together. It's got the locking tabs on it as well for a secure fit.

Once you have that done, you can reconnect the battery cables, test your installation, you can secure all your loose wires with the included zip ties or cable ties. Then you can mount the tow harness in an accessible location using the mounting bracket like I mentioned earlier. Please keep in mind, the unit can only be used with a factory four pole harness. This will not work with the factory seven pole harness. The instructions are detailed, they include some images in there to help with the installation process. A couple more things that I want to mention before we wrap up the video, here on the seven way connector, you can see it has a nice spring loaded lid, has a little tab right there so you can easily get that open, and get everything connected as you need to.

Really nice design. I just want you to know that your wiring is going to be protected. It's got the nice wire loom that goes around there to protect the wires. Again, when installing this, I do recommend going ahead and using the zip ties, to secure the wires up and out of the way, and keeping them safe. Especially during travel, and when a lot of grim builds up under the vehicle, having them tucked up and out of the way. Maybe even along the existing wiring harness is really going to help extend the life of this wiring harness, and just the wires. That wiring loom is going to help as well. That's going to do it for today's look at the Ford Replacement OEM Tow Package Wiring Harness with a seven way connector.

Customer Reviews

Ford Replacement OEM Tow Package Wiring Harness, 7-Way - 118242

Average Customer Rating:  4.8 out of 5 stars   (260 Customer Reviews)

2003 Ford F-150

I have a 2003 F-150 and wiring parts I needed were a perfect fit. The videos were very helpful and informative. Now i know that there are relays and fuses that control trailer lights even through the truck lights are working fine.


Products are great and the customer service is even better! I recently purchased some things from etrailer for my 1998 Ford F-150. Delivery was on time like promised but when it arrived the box was heavily damaged. To top it off four out of the five products that I ordered were not even in the box. UPS driver told me that’s all that he had for me and also told me to reject the delivery and he loaded the damaged box back into the truck.
I called customer service at etrailer and explained what had happened. They gave me the option of my money back or re-shipping. I chose the re-shipping. The delivery was made again and this time everything was there and no damage! Thank you etrailer for your excellent customer service. I will never go anywhere else for my trailer/towing needs.

2003 Ford F-150

This is exactly what I needed. It plugged directly into the factory harness and my existing 7way/4way factory receptacle.


The product was exactly what I ordered.... great instructions.....easy to follow instructions....product has been working awesome.....

awesome....plug and play
Wayne D - 03/16/2022

2000 Ford F-150

Excellent product. High quality and easy installation. Made better than a factory harness I have on a different vehicle. I also purchased the mounting bracket and hardware kit. The bracket is wonderful and most of the hardware was good too. The self tapping screws both got the heads broke off, but it was my fault, not the screws.

Still working flawlessly, the factory 4 flat isnt working but this one still works like it did when brand new. Highly recommended.
Austin J - 06/18/2014


Great quality product and easy to install. Thank you


Your product fits perfectly I customize the 7 way plug into my bumper I didn't like the way the bracket let hang down so far ill send another picture with me pulling my drag truck with the van thanks again.

1997 Ford F-150 and F-250 Light Duty

The tow package I purchased last year, fits great and installed perfectly. It works perfectly with my electronic under-dash brake controller.

The kit came with everything that I needed and instructions were easy to read I had the entire kit installed in about 40 minutes it's work Flawless for me for over a year and I tow a variety of trailers the plug is never failed due to workmanship it is still water tight.

The receiver cap spring still has excellent tension to help hold the plug into place, the only gripe I have is that I should have installed stainless mounting screwswhen I installed the kit because the mounting starting are starting to rust a little, but that's my oversight and is nothing to do with the kit and its ability to provide flawless service.

I highly recommend this product if you're like me and was looking for an oem Plug and Play setup!

5 stars!

2003 Ford F-150

My F150 had an OEM 4 pin trailer plug and hitch.
The 118242 - 7 pin connector with wiring harness is the ticket. The hardest part of the install was dropping the spare tire. The plugs connect directly to the factory plugs and the harness length is the correct length.
The 3035-P brake controller connector harness was just as easy. Plugs right in to the OEM plug next to the ECM connector and the other end into the brake controller.
The PK12711U-26 - 7 pin bracket and hardware kit fastens directly the OEM bracket that is on the hitch. My truck had an OEM 4 pin trailer towing set up with the hitch. The OEM hitch had the bracket welded on it to attach the 7 pin mounting bracket to it.
These kits make this install very easy and professional looking.
If I have one complaint, the hardware kit to attach the 7 pin connector bracket is set up to fasten the bracket directly to the bumper with 2 - self tapping screws provided in the kit. The kit also includes 4 #12 machine screws with toothed washer nuts to attached the 7 pin connector to the bracket. This is fine if your truck hitch doesn't have an attaching bracket welded to it. The kit should included in it 6 #12 machine screws and nuts along with the 2 self tapping screws. Since my OEM hitch actually had a bracket welded to it to attach the 7 pin bracket to it, I had to use two other #12 screws and nuts to attach the 7 pin bracket to the OEM bracket on the hitch. Not a big deal, just a thought.
It took me about 2 hours, start to finish to install the 7 pin connector, trailer controller, and add the two relays in the OEM relay/fuse box under the hood.
I highly recommend these kits.

2017 Ford F-150

this adapter is not the only item i bought, i ended buying multiple plug adapters in hopes of finding one that worked, well to make a long story short i ended up taking my motorhome with all the plugs that i had bought to giant r.v. and sales that said please fix it. the bill came to 679.01 so instead of being a plug and play it turn out to be plug and pay. but on the bright side i have extra plug that i will never use.

Thanks for the follow up Charles, This 7-way is intended to be a 7-way replacement for the trailer connector on older model Ford F-150s but is is not a fit for either your 2017 F-150 or intended to be used as a flat tow wiring harness for flat towing your F-150 behind your motorhome. I have included a link to the trailer connectors confirmed as a fit for your and a link for the vehicle tow bar wiring for flat towing your F-150 behind your motorhome.
-- Etrailer Expert Rachael H - 03/29/2018

2002 Ford F-150

Perfect fit, easy to install. The installation videos for each item were very helpful. Very competitive prices.


Very easy to install! Is actually the proper part unlike local places I tried. Customer care was fantastic with questions about shipping.

2001 Ford F-150



Haven't had any problems with this at all. Plugged right in and worked every time

2012 Ford F-150

I do not like to leave bad reviews, however I was initially impressed from what I heard about family members who have used etrailer. I purchased the above product for a 97 ford f150 with factory tow package. This product was confirmed to fit this truck, and was listed as specifically for this truck. However the connectors are not even close, which I can understand considering that the truck was built in mid 96 as a 97 model. I called into customer service after doing a great deal of research, and discovered through ford that there were different variations of electric brake configurations for this year. I needed to return said product, that I purchased based on the websites EXACT description and etrailer wants to charge me almost 12 bucks to return a product that they advertise as "confirmed fit". I would have no problem paying for shipping if this was MY error. Customer service stated that they would request to waive shipping, confirmed my phone number, stated they would call back....never did. One would think you guys would do your homework on this before advertising a product in such a manner. I was easily able to find out that depending on when and where my truck was built would determine what type of harness is needed.

2003 Ford F-150

I have a 2003 f150. Recently bought a camp trailer and needed trailer brakes hooked up and 12 volt to charge the trailer battery. My truck had a brake controller already installed and very poor hack job for the trailer brake wire into the existing harness.This plug in harness cleaned it all up and Now have trailer brakes and 12 volt to the trailer. One thing to check for is the relay for the 12 volt, my truck already had one in place but was not working , changed it out for the one supplied and now works.

2003 Ford F-150

Quick and easy install` all plug and play wiring harness. Took about an hour with no problems. Great product and great company.


Trailer conector has worked perfectly on my 97 f150. I pull my boat or utility trailer with it weekly. Lights always work no issues

2002 Ford F-150

The wiring harness worked great. There are instructions and a video that made it simple. I knew exactly what to do before I started. We needed this in order to pull a larger trailer that has electric brakes and didn't want to cut and splice wires. The connectors plugged right in to the OEM connectors. I only wish I would have thought of it sooner so I didn't have to pay for the next day delivery...but on the other hand Amazon was like a 2 week delivery and Ford was triple the price. I was happy that someone offered next day delivery.

2000 Ford F-150

This wiring harness fit perfectly and plugged right into the factory trailer harness. took about 30minutes, only because the factory harness was a bear to get apart after 20 years of road grime on it. :-)

2015 Ford F-150

The 7 pin wiring adapter for my 2004 F-150 Heritage worked great. My truck did not come with the towing package so it only had a 4 pin trailer connector. My new travel trailer is a seven pin with trailer brakes. The instructions and on line video made the install a breeze. I really liked it because it was “plug and play”. It only took me about 15 minutes to install. Thank you etrailer!!!


Makes the second vehicle that I’ve installed the custom made wiring harnesses and controller on using etrailer parts. All items were a prefect match for the vehicles just like advertised. Support from their experts was timely and accurate. Products are well made for great. Will continue to use them.

2001 Ford F-150

Good quality, painless plug in installation. the only complaint I had was 2 maxi blade fuses were provided instead of the cartridge type 30a my 01 F150 needed

2001 Ford F-150

Just what I needed to add trailer brakes to my 01 f150. Plug and go installation. Heavy wires and quality plugs. Came with needed relays . Just pop them in the junction box under the hood and good to go. Install video made it simple. Delivered sooner than expected.


The product itself was as expected. However, the example I received was clearly an open-box and was missing the clip that retains the harness in the 7-way connector.

Show More Reviews

Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

  • Troubleshooting a Replacement Ford Tow Package Wiring Harness for No Left Turn Signal
    I would try unplugging the harnesses and relays and then plugging them back in as it sounds like the left turn signal circuit is not making contact somewhere and it could be as simple as reconnecting the harness to fix the problem. Next. I would check the vehicle side plug that the Tow Ready Custom Fit Vehicle Wiring # # 118242, plugs into. If this circuit is functioning properly then check the wires coming out of the new connector to determine if the power is getting to the 7-Way harness....
    view full answer...
  • Finding Fuse and Relay Locations for Tow Package Wiring on a 2005 Ford F-150
    If you look at the owners manual for the truck and/or the legend on the power distribution box lid it will tell you the locations of the fuses/relays that are related to the tow package wiring. I found an online version of the owners manual and the fuse/relay section starts on page 224. For fuses it looks like the trailer tow parking lamp fuse is in location 10 and the relay is location R201.
    view full answer...
  • Tow Package Fuse and Relay Locations for 12 Volt Power on a 2006 Ford F-150
    According to an owners manual I found from Ford for the 2006 F-150 the 12 power fuse for the 7-Way is located in spot 106 and requires a 30 amp cartridge fuse. There is also a Full ISO relay needed in spot R05. Your owners manual has a section on fuses and relays for more information. The fuse you should be able to get at an auto parts store but the relay is most likely a dealer item. I would first test the 7-Way trailer connector to see if it has 12 volt power on the pin in the 1:00...
    view full answer...
  • How to Unplug a 7-Way Harness from the 7-Way on a Ford Super Duty
    Do you see the white plastic piece in the shape of a U in the picture that you sent me? You will need to pull that piece out away from the harness to release it from the rest of the 7-way. Check out the video I attached and skip to the 3:25 mark to see how it unlocks and locks.
    view full answer...
    Image 1 for
  • Troubleshooting Running Light Circuit on Trailer Pulled by 2001 Ford Expedition
    If you have tested and are getting voltage at the trailer connector when the brake lights and turn signals are activated, you most likely have a blown fuse. Check the fuse box under the hood. The box should have a legend on the underside of the lid that identifies the circuits, or you can check your owners manual for the proper fuse location. Keep in mind that on some Ford trucks and SUVs, the fuses for the tow package are located in a separate fuse block mounted on the firewall in the...
    view full answer...
  • Troubleshooting a Factory 7-way on a Ford F150
    I would check the back of the 7-way connector for chewed up wires or anything else that could be causing circuits to short out and fix as necessary. It might also be as simple as the connector became undone and needs to be replugged back in. I would say to check the relays and fuses but it sounds like you have already done that. You can also trace the wiring from the 7-way back up to the front of the truck looking for cut or exposed wire that could be causing the short.
    view full answer...
  • Trailer Towed By 2007 Ford F150 Has No Running or Brake Lights
    If you're only getting power to reach the trailer connector on the turn signal circuits, it sounds like you have one or more blown tow package fuses. The fuses protecting the tow package are usually in the power distribution box under the hood. The owners manual and the lid of the fuse box should have a legend showing which fuse protects which circuits. Locate and replace the blown fuses. Before plugging the trailer back into the vehicle, you'll need to locate the short circuit in the...
    view full answer...
  • Why Are Boat Trailer Taillights Not Functioning With 4-Way to 7-Way Adapter on an RV
    One of two things are happening. Either the 7-way on your RV isn't wired right and needs to be addressed or the grounds of the light assemblies on your trailer aren't sufficient. This is the most common problem that causes the issues you are describing. I would check the ground for each light assembly and the main ground strap that runs from the trailer connector to the trailer frame. Make sure they are securely attached to a clean metal surface. If that doesn't fix the problem you will...
    view full answer...
    Image 1 for
  • Right Turn Signal Not Working on Trailer Towed by 1998 Ford F-150 4x4
    You will want to check the fuses/relays related to the tow package wiring to see if something needs to be replaced. Use the truck owners manual to find all the fuse/relay locations. The only way to test a relay is to use a known good one in place of a potential bad one. If the circuit on the truck side connector actually has power but the trailer side right turn signal does not blink then it is likely a bad ground. But you will need to also make sure that the truck and trailer side connectors...
    view full answer...
  • Troubleshooting a Tekonsha Voyager Brake Controller, Green Light Doesn't Come On
    According to Tekonsha there are 2 reasons that the green light of the Voyager part # 118242 wouldn't illuminate when connected to a trailer. Corrosion on the trailer connectors or a bad power or ground wire to the brake controller. Since you have already checked the power and ground for the controller it sounds like the problem is on the brake output circuit of your trailer like you have already somewhat figured out. I would start at the brake assemblies and make sure they are grounded...
    view full answer...
  • 12 Volt Circuit on Factory 7-Way on a 2014 Ford F-150 Does Not have Power
    It is possible that the fuse and/or relay related to the 12 volt circuit on the trailer connector is missing or blown. You will need to consult the owners manual for your 2014 Ford F-150 to find the locations of all the fuses and relays related to the tow package wiring to check them. If the fuses/relays are present and working then it could be a connection problem somewhere between the trailer connector and where the 12 volt circuit originates. These can be hard to track down. Since the...
    view full answer...
  • Fuse and Relay Locations for Tow Package Wiring on a 2006 Ford F-150
    On your 2006 Ford F-150 there should be fuses and relays used for the tow package wiring. Since the trailer lights do not work but the brakes do, it does sound like a fuse or relay problem. Under the hood, the #10 fuse is for trailer tow backup lamps and parking lamps. Fuse #36 is trailer tow right turn/brake lights. And #42 is trailer tow left turn/brake lights. Location #106 is for the 12 volt circuit to the trailer connector. For relays #R05 is the 12 volt circuit relay. Location...
    view full answer...
  • Connection Point for Tow Ready Custom Fit Vehicle Wiring, # 118242 on a 2000 Ford F-150
    The Tow Ready Custom Fit Vehicle Wiring, # 118242, connects in line with the vehicle wiring usually located on the inside of the driver side frame rail between the back tires and the end of the bed. The connection point that you describe sounds very similar. This harness gets all of the wiring from that one connection point, so after it is plugged in, the 7-Way will be routed to the back of the truck. All of the functions should be coming from the forward part of that harness and all...
    view full answer...
  • Brake Lights Not Working With Trailer Wiring Harness # 118242 Installed on a 1999 Ford F-150
    As you have found, where the connection point is for Trailer Wiring Harness, # 118242, there are more wires going in then coming out of the factory connection point. This requires a little bit of hardwiring. There should be a blue and orange wire on the truck behind the forward plug. The blue wire on the truck would go to the blue wire on the wiring harness. The orange wire should connect to the black wire. The cab or dome brake light working sounds like it is connected to the CHMSL circuit...
    view full answer...
  • Color Scheme for the Wiring on a 1997 Ford F-150
    I am sorry, but I do not have definite color schemes for your 1997 Ford F-150. The configurations of the pins on 7-ways is pretty standard. The standard wiring for 7-ways is posted on our Wiring Page, see link. You can compare it to your 7-way and then check the colors of the wires coming out of their respective pins. Otherwise, you will need to use a circuit tester on the pins and/or wires to figure out their functions.
    view full answer...
  • Troubleshooting Replacement OEM Tow Package Wiring Harness # 118242 on a 2000 Ford F-150
    The best way to determine where the issue is occurring would be to test the 7 pole plug with a circuit tester, without the trailer connected. Have a friend sitting in the cab press the brake pedal and engage each of the turn signals while you test the corresponding prongs on the plug. If you are correctly receiving power at the 7 pole plug, you will need to turn your attention to the trailer. If not, I would check the connection point between the # 118242 harness and your vehicle, to...
    view full answer...
  • Will My Factory 4-Pin Work After I Install Tow Ready 7-Way Harness for a 1997 Ford F-150
    The factor 4-Pin should continue to function. The 7-Way Wiring Kit just connects in line and the signals can still travel to the 4-Pin. I have added a link to the instructions for you to review.
    view full answer...
  • Testing to Determine Why The Tail Light Circuit is Inoperative on a 2003 ford F-150 Pickup
    I would start troubleshooting by using a circuit tester, item # 3808 if needed, to determine if the tail light circuit is active on the vehicle side trailer connector. If so there is a problem on the trailer. If not check the vehicle side plug that the Tow Ready Custom Fit Vehicle Wiring for the 2003 Ford F-150, item # 118242, plugs into. If this circuit is functioning properly then check the wires coming out of the new connector to determine if the power is getting to the 7-Way harness....
    view full answer...
  • 7-Way 12 Volt Circuit on a 2007 Ford F-150 is Not Working
    I assume that you are talking about the 12 volt circuit on the 7-Way. The auxiliary power would be the center pin if used as such. Otherwise it is for reverse lights. But if you are talking about the regular 12 volt circuit then you might need to be looking for not only a fuse but a relay as well. The 12 volt circuit on a 2007 Ford F-150 uses fuse location 106 (trailer tow BAT charge) and relay location R05 (trailer tow BAT charge). If the fuse is missing it takes a 30 amp fuse. If the...
    view full answer...
  • Trailer Running Lights Not Working when Connected to a 1998 Ford F-150
    Your 1998 Ford F-150 uses relays and fuses for the tow package wiring and these are separate from the truck's lights. the fuse/relays related to the tow package lights are: In-cab panel locations 18 and 23 Under hood locations 1 and 16 Checking fuses is easy but for a relay the best way to check it is to use a known good relay in place of a potential bad one. If relays are missing then you would need to get replacements from a Ford dealer.
    view full answer...
  • Plug-In Adapter Needed to Install Brake Controller In 1998 Ford F-250
    If your 1998 Ford F-250 has the factory 7-pole trailer connector at the bumper, then you should have the brake controller plug under the dash. The factory brake controller plug is located under the dash, near the center console. I have attached a photo of the vehicle side of an adapter. You will want to find the plug that will match up with the end of the adapter in the photo I have attached. I suggest double checking, but it sounds like you have found the correct plug under the dash. There...
    view full answer...
    Image 1 for
  • Trailer Lights Not Working with 2011 Ford F-350 After Trailer Light Burned Out
    Up until you said you switched relays I was thinking relay the whole time. But if using a good relay in place of a potential bad one didn't solve the problem and the fuses are all good then that could only mean there is a problem with the actual wiring somewhere between the front of the truck and the trailer connector. Trace the wiring all the way back to front and look for and repair any damage to the wiring. I assume the truck turn signals work fine but if they don't make sure the flasher...
    view full answer...
  • Left Turn Signal/Brake Light Circuit Not Working at Trailer Connector on a 2006 Ford F-150
    On your 2006 Ford F-150 there are special fuses for the tow package right/left turn and brake circuits. The left side is in location 42 and the right side is location 36. If the fuse is good in location 42 then the issue is likely the wiring somewhere from the front of the truck to the trailer connectors. You will need to trace the wiring as best you can and fix any breaks in the wiring. Also make sure that the connection to the back of the connectors is good and not corroded.
    view full answer...
  • Troubleshooting Trailer Wiring Connected that Worked for 15 Seconds then Stopped
    Sounds like you may have blown some trailer wiring fuses on your 2012 Ford F-150 if everything worked for a few seconds and then stopped. Check under the hood for all of the trailer wiring fuses and replace as necessary. Before you reconnect the trailer you will want to inspect the wiring of your trailer to see if you can find anything that would cause the box to short out like corrosion or cut/exposed wiring. Fuses don't usually go out unless there is a short on the trailer that takes it out.
    view full answer...

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