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  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 7 Round - Blade
  6. No Converter
T-One Vehicle Wiring Harness with 7-Way Trailer Connector

T-One Vehicle Wiring Harness with 7-Way Trailer Connector

Item # 118272
Our Price: $62.62
You Save: 33%
Custom Fit Vehicle Wiring

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Custom Fit Vehicle Wiring 118272 - No Converter - Tekonsha
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Quickly and easily install a 7-way, RV-style trailer connector on your vehicle with this custom wiring harness. T-One connector plugs into existing tow connector - no cutting, splicing or tapping required. 1-833-496-1390 to order Tekonsha custom fit vehicle wiring part number 118272 or order online at Free expert support on all Tekonsha products. Guaranteed Lowest Price and Fastest Shipping for T-One Vehicle Wiring Harness with 7-Way Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (132)
  • Q & A (0)
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  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118272

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

Quickly and easily install a 7-way, RV-style trailer connector on your vehicle with this custom wiring harness. T-One connector plugs into existing tow connector - no cutting, splicing or tapping required.


  • Provides a 7-way, blade-style trailer connector at the back of your vehicle to power your trailer's signal lights
    • Compatible with 4-pole, 5-pole and 6-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection point behind rear tire
    • Plug in T-connector
  • Constructed of 16-gauge bonded wire
  • 1-Year limited warranty


This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located behind the rear tire, on the passenger's side.

Once installation is complete, the 7-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.

It is recommended that you use a small amount of grease on all electrical connections - the plug on your automobile and the 7-pole connector itself - to help prevent corrosion.

118272 Tekonsha T-1 T-Connector - 7 Wire

Installation Details 118272 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Satisfaction Score:

Customer Reviews

T-One Vehicle Wiring Harness with 7-Way Trailer Connector - 118272

Average Customer Rating:  4.7 out of 5 stars   (132 Customer Reviews)

Quickly and easily install a 7-way, RV-style trailer connector on your vehicle with this custom wiring harness. T-One connector plugs into existing tow connector - no cutting, splicing or tapping required.


The hitch was very easy to install once the brackets holding the mufflers were removed, a second person to help in holding the hitch when installing it is a big help. The “T” wiring harness was also easy to install, highly recommend using some sort of electrical tape to help seal the two connection pints from water / snow. The 7 pin / 4 straight adaptor is exactly what I needed, different trailers, different plug types.

2018 Ford Explorer

2018 Ford Explorer Limited. This item needs to include the mounting bracket. I had to shop around for one to finish my project. The instructions were also not clear for my vehicle. There were two sets of wires where it showed one. I took a gamble and choose one. It was more time consuming than expected. The 1 day shipping was also not one day. It took longer than expected to receive it. Otherwise, it works.


This was very easy to connect. Easy enough for a women to do! I highly recommend this wiring harness. Worked great for my pop up camper and 2017 ford explorer!


It’s not working , very poor wiring diagram. Or plug itself is bad


Connected perfectly.

Very good and easy to install
Wayne - 03/13/2022

2018 Ford Explorer

Would have been excellent if they had included longer zip ties and a mounting plate for this kit instead of trying to purchase another mounting plate for more money

2016 Ford Explorer

Only reason not 5 stars due to initial confusion caused by picture on the product pkg & instructions. Picture shows wire harness with a plug on each end. In fact, one end has 2 plugs installed & the other end is taped off harness w/o a plug. that plug needs to be put together by user & written instructions very minimal. However, true to form, Etailer has an excellent video which cleared this all up. so far works like a charm. Easy install


Very quick and easy installation! Looked high and low for the best deal and saved the most money on parts at

2015 Ford Explorer

Attached easily to existing wiring on my 2015 Ford Explorer. Only problem I had was it did not come with a plate to attach the plug to the tow hitch so that was disappointing. Had to make my own, lucky I had a plate from an old set-up that I configured for my use.


Easy install. Mounting Brackett for the plug would have been nice.

I recommend part # PK12711U
Mounting Bracket and Installation Hardware - Pollak 7-Pole, RV-Style Trailer Connector - Vehicle End
as a mounting bracket that you can use. It would be mounted to your bumper.
-- Etrailer Expert Jenny N - 04/13/2022


The harness fit perfectly and was easy to install. Yes

The harness fit easily and is still working great. It looks like it was a factory install
Charles - 08/30/2022

2018 Ford Explorer

The harness was very easy to mount. I spent about 30 minutes, but could have done it quicker. The instructions could use a bit more explanation on how to insert the individual wires into the back of the plug adapter, which is why I gave it four instead of five stars.


Everything is going fine so far I installed the hitch, T-harness and 7 way plug on my 2019 ford explorer but now I need to find out what relays and fuses I need to install in the vehicle. Do you have a KIT with instructions and maybe a brake controller? Please

According to the Ford website, you will need a 30 amp fuse in location 27 and a relay in location 37. The M-case fuse is available from an auto parts store, but you might need to see the dealer for the necessary relay. To activate power to the brake controller plug under the dash, check location 46 for a 30A J-case fuse and install one if its missing. In the fuse panel in the passenger compartment, make sure theres a 5A fuse installed in location 4. This panel is located under the dash to the left of the steering column. I recommend the Tekonsha P3 brake controller part # 90195
Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
and the adapter for Ford Explorer part # 3035-P
Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Ford, Lincoln, Mercury
. The P3 is our most popular and reliable brake controller.
-- Etrailer Expert Heather A - 09/08/2021


Great costumer service, lightning fast shipping, quality product, and easy install.


Wiring harness was a little involved but it was due to Explorer having custom hitch mounted. Overall it did not take long and I am still very happy with my purchase, works great!

Still working as expected and looks like it did the day I installed it. Worked out great!
Michael M - 06/25/2021


plug n play connection "no brainer".

2016 Ford Explorer

Works great! Shipping was hassle-free.

2016 Ford Explorer

Just what I needed to replace my damaged wiring harness. This one is made 10 times better than what the dealership had originally "hacked job" installed... only thing left to do is add the electric brake controller. But glad my wife's explorer is back to working with a trailer attached. Thanks again etrailer for the grrat product and for answering my questions.

Been great, have no problems but have only used the trailer hookup a couple of times. But still satisfied with your product.
Michael D - 04/02/2021


Works great. Great price!


Items were not packaged at all. Everything just dumped into big box and shipped.


Great! Everything fit right in.easy to install. Thanks!

2014 Ford Explorer

Very easy to install on my 2014 Ford Explorer with towing package. Highly recommend!!


The light kit does not contain the connector mounting bracket. The bracket is shown in the photos of the kit. The kit description does not say the bracket is not included. I am unable to complete my install with out the bracket

The harness comes with the trailer end wires taped together to allow easy routing to the hitch. The issue is no tape was used to insulate the wires from each other. This resulted in multiple blown fuses when i connected the harness to the car.Some additional tape or a warning to not plug in to the car harness until the trailer plug is connected would have avoided the problem
Lou L - 04/20/2020


First wiring harness sent was not correct. This item was recommended by etrailer employee. Telephone call with another employee straightened it out and return was easy. The hitch looks nice, except the screws on the bracket (4) have all rusted and look bad. My vehicle is a Ford Explorer XLT. When it's all washed and waxed it looks great till my eye sees those 4 little screws. You've reminded me how much it bothers me so I will get some quality black screws to replace. I am subtracting a star for the incorrect info I initially received and one for the cheap rusty screws.


Great product, well made. My only complaint is that I wish I had noticed it didn’t include mounting bracket for the 7-way hookup

No issues after 1 yr
Michael - 06/11/2020

Show More Reviews

See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring

  • 7-Way Trailer Wiring Recommendation for 2015 Ford Explorer
    For your 2015 Ford Explorer the T-One 7-way part # 118272 is a confirmed fit. This will give you a 7-way at the rear of your vehicle and would not require any adapters to be installed/used.
    view full answer...
  • Does 7-Way # 118272 Fit 2016 Ford Explorer
    For your 2016 Ford Explorer the Tekonsha wiring harness part # 118272 is a confirmed fit. This will fit whether or not you have the tow package. It fits both configurations. You have the connector on your vehicle that this will plug into and all of the pins will be active.
    view full answer...
  • Is 7-Way Part # 118272 That Fits 2017 Ford Explorer Fully Functional
    Yes, the 7-way trailer connector part # 118272 which is a confirmed fit for your 2017 Ford Explorer will be fully functional.
    view full answer...
  • 7-Way Trailer Wiring Recommendation for 2016 Ford Explorer
    For what you are looking for what you need is the 7-way part # 118272 which is a confirmed fit and will fit your vehicle regardless of whether it had the tow package or not.
    view full answer...
  • What Does Harness on 2017 Ford Explorer Look Like for Trailer Wiring
    Your picture didnt make it through. Could you email it to me? I wonder if maybe you found wrong connector.
    view full answer...
    Image 1 for Image 2 for
  • Finding Wiring Connectors for Trailer Wiring that Fits 2017 Ford Explorer
    If your 2017 Ford Explorer has one of the connectors for the # 118272 you have the other as well and it would be just a matter of looking further for it. I attached an install video for this kit on a similar 2017 Ford Explorer for you to check out that shows you where you'll be able to find it.
    view full answer...
  • Parts Needed to Add 7-Way to 2012 Ford Explorer Limited with 4-Way
    Since you have the square connectors on your 2012 Ford Explorer the easiest solution to add a 7-way is the part # 118272 that you mentioned. For a more cost effective solution though we have the # 37185 that allows your current 4-way to plug in and gives you a 7 way and 4-way solution you can easily mount at the rear of your Explorer.
    view full answer...
  • Installing 7-Way in 2016 Ford Explorer
    Installing a 7-way trailer wiring connector on your 2016 Ford Explorer is pretty easy actually. All you need is the part # 118272 which plugs easily into a port under the rear of your vehicle. I attached a picture of what the connector looks like as well as an install video for this kit on a similar 2016 Ford Explorer.
    view full answer...
    Image 1 for
  • Trailer Wiring Recommendation for 2016 Ford Explorer
    If you need a 4-way trailer wiring harness you'll want the part # 118540 which is a confirmed fit, or if you want the 7-way trailer wiring harness you'd want the part # 118272 which is also a confirmed fit. I attached install videos for both of these for you to check out.
    view full answer...
  • Troubleshooting The Quick Connections On The 2017 Ford Explorer And The Tekonsha Harness # 118272
    This Tekonsha T-One Vehicle Wiring Harness for Factory Tow Package - 7-Way Trailer Connector # 118272 harness is designed to be used with vehicles that already have a factory tow package. If you don't have that factory tow package, it may not fit. If you don't have the tow package, I recommend you use the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118540. If you do have the factory tow package, it should install to the connection located beneath the vehicle behind...
    view full answer...
  • 118540 Trailer Harness on 2019 Ford Explorer Causing Blind Spot/Cross Traffic Monitor Malfunction
    Per our records, you purchased the # 118540 harness. I checked with my contact at Tekonsha, who tells me that it sounds as if you have the # 118540 harness you purchased plugged into the wrong connector under the vehicle. There is a gray connector and a black connector. The # 118540 should be plugged into the black connector. If it's plugged into the gray connector, it would cause problems such as those you described.
    view full answer...
  • Is a Powered Converter Needed for a 2018 Ford Explorer
    The circuit protection module as well as the converter module is already built into the trailer wiring circuits on a 2018 Ford Explorer so you won't need to install any of this separately. In order to activate the trailer's lights I recommend the T-One Vehicle Wiring Harness part # 118272 which has a 7-way. If you do ever want to control the trailer's brakes then you will need a brake controller for which I recommend the Curt Echo Mobile Trailer Brake Controller part # C51180 as this will...
    view full answer...
  • Brake Controller Recommendation for 2014 Ford Explorer
    If your towing setup is heavy enough that a weight distribution system improves the towing experience then yes, a brake controller is going to be needed. So the easiest to install brake controller that also works really well is the Curt Echo Mobile part # C51180. Basically this just plugs into an active 7-way and once you sync it to your phone it's ready to go. This brake controller is proportional which means it senses the amount of deceleration your tow vehicle is applying and applies...
    view full answer...
  • Troubleshooting 7-Way Install on 2018 Ford Explorer
    Though the Vehicle Wiring Harness with 4 Pole Trailer Connector # 119190 is a universal hardwire kit, you will not need it with your 2018 Ford Explorer if you already have the T-One Vehicle Wiring Harness with 7-Way Trailer Connector # 118272. The problem almost certainly is the 7-way connector was wired incorrectly after you plugged it into your Explorer, or that you have not fully seated the wires into the connector. If you take a look at the cut out of the linked installation instructions...
    view full answer...
    Image 1 for
  • Is 7-Way Wiring Harness and 7- and 4-Pole Trailer Connector Socket Compatible on 2012 Ford Explorer?
    Yes, the T-One Vehicle Wiring Harness # 118272 that fits your 2012 Ford Explorer is absolutely compatible with the 7- and 4-Pole Trailer Connector Socket # HM40975, so you can use it in place of the receptacle that comes with the 7-way Wiring Harness.
    view full answer...
  • 7 and 4-Way Recommendation for 2018 Ford Explorer without Tow Package
    Your best option for installing both a 7-way and a 4-way on your 2018 Ford Explorer without the tow package is the T-One 7-way kit part # 118272 that you referenced and then swapping the 7-way out for the # HM40975 so that you have both connector styles. Once you do that you'd be set!
    view full answer...
  • Trailer Wiring for 2016 Ford Explorer that Does Not Require Splicing Into the Vehicle's Wiring
    Your 2016 Ford Explorer does include all the wiring needed to plug in a trailer connector. If you need a 4-way connector, the Tekonsha Wiring Harness # 118540 is what you can use. This plugs in to the Explorer's wiring beneath the rear of the vehicle on the passenger side. If the trailer you're going to be towing requires a 7-way connector, the Tekonsha 7-Way Trailer Connector # 118272 is what you will need. This connects to the car at the same location the 4-way does under the rear...
    view full answer...
  • Trailer Wiring Harness Recommendation for 2012 Ford Explorer
    Based on my research, the Explorers with a factory tow package came out of the factory with either a 7-way trailer connector or a 4-way connector. If you want a 4-way connector, I recommend using the Tow Ready T-One Vehicle Wiring Harness # 118540. I have attached an installation video of this wiring harness on a 2012 Explorer. To determine if you can use the Tekonsha T-One Vehicle Wiring Harness # 118272 with a 7-way connector, that you referenced, you will want to find the factory wiring...
    view full answer...
    Image 1 for
  • Recommended Trailer Hitch Receiver for a 2016 Ford Explorer With the Foot Activated Gate
    My contact at Draw-Tite confirmed that their Max-Frame Trailer Hitch Receiver, part # 76034, is compatible with the foot activated gate on your 2016 Ford Explorer. He did mentioned that it will not be as sensitive, and you will need to kick your foot as if you were kicking a football instead of just waving your foot underneath the bumper. If you are needing to add a wiring harness to the rear of your Explorer, I recommend using the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat...
    view full answer...
  • Recommended 7-Way Wiring for 2017 Ford Explorer
    For your 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End # HM40975 if you like the double function and look, you can keep it. You will need to get the T-One Vehicle Wiring Harness for Factory Tow Package - 7-Way Trailer Connector # 118272 and that wiring can connect to the 7-way connection that comes with it or it can connect to your # HM40975. This custom-fit T-One connector plugs into your Ford Explorer's factory tow package wiring harness, which is located...
    view full answer...
  • Recommended Trailer Hitch and 4-way Connector For 2019 Ford Explorer Built For Sale In Canada
    I reached out to my contact at Draw-Tite and he was able to confirm that the correct trailer hitch receiver for your 2019 Ford Explorer that is for sale in Canada is the Draw-Tite Trailer Hitch Receiver # 76034. He mentioned that this hitch is sold here and in Canada. For a 4-way wiring harness I recommend the # 118540 which he was also able to confirm will still work on your Explorer. I included videos of the products mentioned for you to take a look at.
    view full answer...
  • Recommended Trailer Wiring For A 2020 Ford Explorer
    When installing a trailer wiring harness on your 2020 Ford Explorer The T-One Vehicle Wiring Harness with 7-Way Trailer Connector # 118272 is not confirmed for your vehicle. Since your vehicle had the harness stripped out I recommend The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118599. The # 118599 plugs into your vehicle's wiring harness, which is located inside your trunk, behind the tail lights on both the driver's side and passenger's side. You will also have...
    view full answer...
  • Trailer Hitch and Wiring Recommendation for 2018 Ford Explorer
    For your 2018 Ford Explorer the Draw Tite hitch part # 76034 is the option I recommend. It has the highest towing capacities of the hitches available which means it is the strongest and because you'll be able to retain the use of your hands free liftgate by simply kicking your foot to either side of the hitch opening. I attached an install video for this hitch for you to check out as well. For trailer wiring you'd want the part # 118272 for if you need a 7-way or part # 118540 for if...
    view full answer...
  • 2015 Ford Explorer Sport Brake Controller Install Recommendation
    First you'd want the 7-way part # 118272 which is confirmed as a fit for your 2015 Ford Explorer Sport. With this installed you'd only need the P3 # 90195 for the brake controller and the # 3035-P for the install harness for your vehicle and you'd be set. In the install video I attached you'll see where to find the connector to install the controller.
    view full answer...

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