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  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. No Converter
T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

Item # 118270
Retail:$51.16
Our Price: $36.28
You Save: 29%
Custom Fit Vehicle Wiring

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Shipping Weight: 0.47 lbs
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T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector No Converter 118270
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Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-One connector plugs directly into OEM tow package harness - no cutting, splicing or tapping required. 1-800-940-8924 to order Tekonsha custom fit vehicle wiring part number 118270 or order online at etrailer.com. Free expert support on all Tekonsha products. Great prices and Fastest Shipping for T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (466)
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Tekonsha Custom Fit Vehicle Wiring - 118270

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • No Converter
  • Tekonsha

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-One connector plugs directly into OEM tow package harness - no cutting, splicing or tapping required.


Features:

  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Designed for use with a factory tow package
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing of wires
    • Insert fuses and relays (included) in engine compartment
    • Locate connection points beneath your vehicle, along the frame rail
    • Plug in connectors
  • Constructed of 16-gauge bonded wire
  • Comes with dust cap for 4-way flat connector


Specs:

  • Maximum amperage:
    • Stop/turn lights: 7.5 amps per circuit
    • Tail lights: 7.5 amps per circuit
  • 1-Year limited warranty


Installation

This custom-fit T-One connector plugs into your vehicle's factory tow package wiring harness, which is located beneath the vehicle, near the frame rail on the passenger's side. Once you've plugged in the connectors, insert the included fuses and relays into their locations in the fusebox, which is located in the engine compartment.


Once installation is complete, the 4-way flat 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 plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.




118270 Tow Ready T-1 T-Connector - OE Replacement 4-Flat

Installation Details 118270 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector - 118270

Average Customer Rating:  4.9 out of 5 stars   (466 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-One connector plugs directly into OEM tow package harness - no cutting, splicing or tapping required.

by:
2013 Buick Enclave

Gave this order 5 stars for the prompt service and the product was just as described. I ordered a drawtite Hitch and wiring connector for my 2013 Buick Enclave. The hitch and wiring connector arrived quickly. I also ordered a bracket for the four wire connector within 10 minutes of the first order, which was shipped first, it was shipped by the USPS. All of the items fit perfectly and was easy to install following the excellent instructions. Great job! Recommend etrailer for all your towing needs.

Kershaw G.

8/6/2018

perfect fit working fine



by:

Very good product love the explanatory videos. The videos alone make the purchase worthwhile.



by:

Hi. The hitch and wiring fit like a glove. Looks
Like it came from the factory new. Love the
fact the draw tie hitch can hide away under the
bumper cover. Highly recommend this
Product. I will pass the word about your
company to all my contacts in the business.
Thanks for all your help Stephanie. Look
Forward to doing business with you again



by:
2015 Chevrolet Traverse

Purchased hitch and wiring harness.
Great
products. Easy to install.
Fast delivery.



by:
2015 Buick Enclave

I ordered a hitch kit, along with the wiring harness for my 2015 Buick Enclave. They arrived in 3 days with free shipping. I watched the installation video on YouTube twice. I but my car rear wheels on a set of ramps and the installation was complete in about 45 minutes. It was super-easy and EXACTLY as the video had shown. Rarely does a company exceed expectations so completely. Ordering was easy. Shipping was fast. The quality of the hitch and wiring harness are great. The videos for both the hitch and the wiring harness installations were very well done and easy to follow. The hitch was a perfect fit on my vehicle, no adjustments, adapters, spacers, etc. Icing on the cake is that the factory trim plate covers the hitch when not in use, you can't even tell it's there. A big thank you, super impressive!

Etrailer Expert

Katrina B.

7/25/2022

Id be happy to help you with this. This key is a direct replacement key for a SportRack bike rack, roof box, roof rack, and ski or snowboard racks. In order to find the correct key for your application, you will need to get the number off of the front of the locking core.



by:

Easy installation. Everything fit perfect. Wiring harness was a little tricky but the manufactures plug was hard to get to. After installation I was able to put my access door back on.



by:

Highly recommend this wiring kit. It was extremely easy to install, the directions were super easy to follow. Me and my son had it done in 10 minutes.



by:

Everything worked as planned. The harness is well constructed.



by:

Great product! Easy to follow instructions. Everything needed came in the kit. I also watched an [online] video from etrailer before installation which made the job sho much easier. Thank you.



by:

THANK YOU! I got a hitch receiver and wire. Adam was very helpful to make sure I got the right products I needed for my vehicle. Very easy installation!



by:
Saturn Relay

I'm 72 years old and I did not have any problem putting on the hitch. The wiring was more of a problem. My vehicle required removing the lower plastic part of the fender so I could attach your plug to the vehicle socket. Also the installation of the relays was not obvious. I eventually went to your video and looked for the mark on the top of the relay and used that to decide how to install them. This should be shown more carefully. Also not everyone is going to have lubricant for the connections, you should include a small tube of this or mention it on the order.

Woody L.

11/20/2017

fine... no more problems



by:

I am very happy with this hitch and how easy it was to install. The price was right as well.



by:
2015 Buick Enclave

Easy install especially with the etrailer website video.



by:
2014 Chevrolet Traverse

I bought a Hidden Hitch receiver and a wiring harness for my 2014 traverse. Both fit great and were installed in less than an hour. Shipping was fast and on time. Great prices and great service. Thanks for all you do.

Jake H.

6/14/2016

Wiring harness is still working great after a year. Its been completely trouble free. :



by:
2017 Chevrolet Traverse

Love the product!! Easy to assemble, and easy following instructions.



by:
2015 GMC Acadia

My delivery was fast and accurate. Installed the Trailer Hitch and Wiring following the included clear instruction. Everything went smoothly and I'm very happy I ordered from etrailer.com.

Great P.

3/7/2018

Product is great, no issues. Next year I will be looking for a setup to flat tow something behind a motor home and will come to etrailer first.



by:

This was an extremely easy and fast installation. Simple as locating the factory wiring tow package plug in the rear wheel well on the passenger side, plug in the 118270 and then route and secure the wiring. Probably took all of 10 minutes.

Charles P.

2/21/2018

2016 Chevrolet Traverse. No problems at all.



by:

It works great and was easy to get cone cted



by:
2015 Chevrolet Traverse

Products are great, install was easy. Big brown truck dropped it off, and an hour later I had both the hitch and the light kit installed. Highly recommend etrailer!

John M.

7/11/2017

Still working perfectly

John M.

7/11/2017

Still works perfectly



by:

Have had this for a year and have had no problems. Great product!!



by:
2016 Buick Enclave

This kit could not have been simpler to install. Worked perfectly as well. Instructions are failsafe. My install was on a 2016 Buick Enclave. The rear connection port which came on the car from the factory was a little cramped, but otherwise not a problem. As is any under-car job, a lift or ramps make this job simpler.

Briney56

3/24/2018

Perfectly.



by:

Fit 2014 GMC Acadia SLE-1 that did not come with a factory tow package. Easy to install. Best price I found. Seems like quality materials and build. Highly recommend.

Kou

11/11/2021

Great product that will last! I still highly recommend this product



by:
2015 GMC Acadia

It has been a year since I installed the receiver and wiring harness on my 2015 GMC Acadia. I am very pleased. They have gotten used a lot. I do lawn care and use it to pull my trailer. I drove my trailer with my Harley Davidson on it all the way to Tennessee. I would recommend the little wiring harness support bracket that I purchased on every order. It is great and makes the 4 flat plug look tidy bu not dangling down or being tied up. No issues at all. Thank you E-Trailer for inquiring about it after it has been installed for a year.



by:
Buick Enclave

Installed on a 14' Buick Enclave. etrailer has fantastic instructions and support I knee what had to be done before hitch arrived. No surprises and was able to tow from TX to WI with no issues. Took about an hr to install by myself without lifting car. Also took pictures to document process.

I did have one minor issue when I arrived at the trailer rental place and running lights didn't work. A fuse blew after 1st trip with it. Replaced and haven't had issues since. Very minor and don't think reflects any negativity onto quality of product.

I also highly suggest purchasing plug clip mount with this hitch. If not the plug is dangling and it's not expensive to add the mount. Glad I did and it looks nice.



by:
2014 Buick Enclave

Another quality product from etrailer.com! Item shipped and arrived very quickly. All parts and instruction were there and easy to follow. Installed hitch on a 2014 Buick Enclave. Fit was great and everything lined up perfectly. I had a little problem bolting the item in. The threads on the vehicle were extremely corroded. Cleaning them with a brush, as directions suggested, was not enough . I went and purchased a tap. Ran that through all of the threads in the frame and that did the trick. Bolts easily threaded in after that. Would also suggest you look at the installation videos. Directions are in black and white and found them difficult to follow for installing the fuses from the wiring kit in the car. Video could not have been any clearer! Either way you really can not go wrong purchasing this. The price is outstanding for the quality as all of my purchase with etrailer have been.


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466
Show More Reviews

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

  • Where Does Tow Ready Trailer Wiring Harness 118270 Plug Into on a 2013 Buick Enclave
    Trailer wiring harness # 118270 will plug into a single connector on your 2013 Buick Enclave. You will need to locate the vehicle’s connector located under the Enclave on the passenger's side. Look for an opening to the right of the muffler. Reach up into opening to locate the grey connector. Disconnect the mating protective cover and discard. Connect the Enclave connector to the mating harness. All connector surfaces should be clean and free of dirt. Be careful not to damage the locking...
    view full answer...
    Image 1 for
  • Does Tekonsha Trailer Wiring Harness # 118270 Fit 2017 GMC Acadia Limited
    I apologize for any confusion but the Tekonsha harness part # 118270 is a confirmed fit for the 2017 GMC Acadia Limited. I confirmed this with Tow Ready and you can see it in the install video link you mentioned as well.
    view full answer...
  • Installing Tekonsha T-One Harness on 2014 Buick Enclave without Tow Package
    The factory port to which the Tekonsha T-One Vehicle Wiring Harness # 118270 connects is located around the area you mentioned looking (behind passenger side wheel well), but based on the picture you attached I think you may have found a different plug that's not used for this purpose. The correct plug is going to be pretty high up on the vehicle and it does take a good amount of reach to access it. I have attached an image of what the plug looks like (the picture is showing it with it...
    view full answer...
    Image 1 for Image 2 for
  • 4-Way Trailer Wiring Recommendation that Fits All Models of 2014 Buick Enclave
    Yes, all of the 2014 Buick Enclaves have the needed connector at the rear to install the Tekonsha trailer wiring harness part # 118270. This will give the vehicle a 4-way for a trailer to connect to.
    view full answer...
  • Trailer Signal Lights Not Working with 2014 Buick Enclage
    The relays should not be affected on the Tekonsha T-One Vehicle Wiring Harness # 118270 if the turn signal fuses were blown in your 2014 Buick Enclave. If the fuses are damaged, simply replacing them should solve the issue. It looks like the fuse for the left turn is in position F21 and the right turn fuse is in position F17. You can check to see if they are damaged and in need of replacement. These should be available at any local auto parts store.
    view full answer...
  • Which Circuits Does the T-One Vehicle Wiring Harness 118270 Activate
    The relays and fuses that are included with the T-One Vehicle Wiring Harness part # 118270 for your 2016 Chevrolet Traverse only activate circuits that are related to lighting, not shift point. These circuits are listed for you below: Trailer Park Lamp Left Turn Trailer Stop/Turn Right Turn Trailer Stop/Turn Trailer Back Up Trailer Brake Trailer Power
    view full answer...
  • Wiring Harness for 2016 Buick Enclave Without Tow Package
    The trailer wiring harness you would want to use with your 2016 Buick Enclave that does not have a tow package is the T-One Vehicle Wiring Harness # 118270. This kit comes with the necessary fuses and relays to activate the tow package since your Enclave did not come with it. I have included a link to an install video of this harness being for you to take a look at.
    view full answer...
  • T-One 4-Pole Trailer Connector For 2015 Buick Enclave Without Towing Package From Factory
    If the 2015 Buick Enclave did not technically come with a tow package, you can use T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector part # 118270 that comes with the fuses that you need to activate the tow package features. I have attached an installation video for your reference.
    view full answer...
  • Constant Power on Pins Inside 4-Way When Installing T-One Harness on a 2015 GMC Acadia
    I spoke to my contact at Tekonsha about the issue you are having with the T-One Vehicle Wiring Harness part # 118270 on your 2015 GMC Acadia. They said they have heard of this issue before but it is not very common. For starters, you will need to switch the orientation of the relays if they do not look like the ones in the attached photo. Unlike most relays, the pins are positioned in a way that will allow them to be installed incorrectly so you will need to check this first. If the relays...
    view full answer...
    Image 1 for
  • Correct T-One Vehicle Wiring Harness for a 2013 Chevy Traverse
    The correct T-One Vehicle Wiring Harness for a 2013 Chevrolet Traverse is part # 118270 which offers plug-in-play installation. It provides the most basic trailer connector used for common trailer lights like stop, turn, and running.
    view full answer...
  • Fuse and Relay Locations for Tekonsha T-One Vehicle Wiring Harness # 118270
    The Tekonsha T-One Vehicle Wiring Harness # 118270 referenced in your question includes 10 amp fuses that need to be inserted in the F41 (Trailer Park Lamp), F21 (Left Turn/Stop), F17 (Right Turn/Stop), and F8 (Reverse) locations inside the vehicle's fuse box under the hood. The included 30 amp fuses should be located in the F34 (Trailer Brake) and F30 (Trailer Power) positions. The relays are then installed in the R16 (Right Turn/Stop) and R15 (Left Turn/Stop) positions. You will want...
    view full answer...
  • Where is the OEM Wiring Plug Located on a 2012 Buick Enclave
    According to the installation instructions for your 2013 Buick Enclave, the vehicle’s towplug will be located on the rear passenger side of your vehicle.Locate the opening just to the right of the muffler. Up in the opening you will find the vehicle's tow plug. The wiring will have a grey plug at the end and this plug is where # 118270 4-flat harness will plug in to your Buick's wiring. I have liked a installation video that will show you exactly how to install the # 118270 wiring harness.
    view full answer...
  • Trailer Wiring Harness Recommendation for a 2013 Chevy Traverse without Tow Package
    For your 2013 Chevy Traverse without the tow package the correct trailer wiring harness would be the part # 118270. This will provide the turn signal functions for a trailer and will work with your rear AC unit. I attached an install video for you to check out as well.
    view full answer...
  • Will Tow Ready T-One fit 2015 Chevrolet Traverse
    Yes, the Tow Ready T-One Vehicle Wiring Harness will fit your 2015 Chevrolet Traverse. This wiring harness will plug directly into your vehicle's factory tow package. I have attached an installation video and of this wiring harness on a 2015 Buick Enclave, which will be similar to your Traverse. The installation instructions are also attached.
    view full answer...
  • 4-Way Trailer Wiring Harness Recommendation for 2013 GMC Acadia
    We have the T-One harness part # 118270 which would the correct kit for your 2013 GMC Acadia. This includes the fuses and relays to activate the tow package if your vehicle was not equipped with the tow package. I attached an install video for this kit for you to check out as well.
    view full answer...
  • Installation Of T-One Vehicle Wiring Harness For Factory Tow Package On 2015 Chevrolet Traverse
    Yes, the T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector, # 118270, for your 2015 Chevrolet Traverse comes with 3-30 amp fuses and 3 relays. According to the instruction details that I've attached, you will only use 2-30 amp fuses and 2-relays. This will give you an extra fuse and relay to keep on hand for any issues.
    view full answer...
  • Trailer Wiring Harness for a 2015 Chevy Traverse LS with or without Factory Tow Package
    The term "tow package" means different things for different vehicles and manufacturers. The definitive way to know if your 2015 Chevy Traverse has the factory tow package is to have a dealer run the VIN in their system and they can tell you how it is equipped. But for wiring, it does not matter in this case because wiring harness # 118270 fits models with or without the factory tow package. I have included a link to a video showing an example installation for you.
    view full answer...
  • Will Tekonsha T-One Wiring Fit 2015 Buick Enclave Without the Tow Package
    The Tekonsha T-One # 118270 wiring kit is compatible with your 2015 Buick Enclave whether or not you have the tow package. If you did have the tow package you would simply connect the wiring but since you don't have the tow package you need to install the included fuses and relays as well. The wiring harness will still plug in like it does if you were to have the tow package. Attached is an installation video of this wiring harness on a 2015 Enclave that you can reference. If you can't...
    view full answer...
    Image 1 for
  • Recommended Trailer Wiring Harness for 2013 Chevy Traverse without Tow Package
    The Tekonsha T-One Vehicle Wiring Harness # 118270 referenced in your question is confirmed to fit your 2013 Chevy Traverse. This will indeed plug right into the factory port you found beneath the vehicle on the passenger's side. This particular harness includes the fuses and relays needed to activate the tow package on your model that was not equipped with one at the factory, so this will work perfectly for you. I have attached the installation video you mentioned that you can use can...
    view full answer...
  • Will Tow Ready 4-Pole Harness # 118270 Fit 2015 Chevrolet Traverse Without Factory Tow Package
    Tow Ready 4-pole wiring harness # 118270 is intended for the Chevrolet Traverse both with and without the factory tow package. The vehicle will have a plug that mates with the one shown in the linked photo. The kit includes the harness, and the fuses and relays to activate it. I have linked a video for you that shows you the installation process on your same model year Traverse.
    view full answer...
    Image 1 for
  • 4-Way Trailer Wiring Recommendation for 2017 Chevy Traverse
    For a 4-way trailer wiring harness confirmed as a fit for your 2017 Chevy Traverse without the tow package you would want the Tekonsha kit part # 118270 which is a custom fit for your vehicle.
    view full answer...
  • Trailer Wiring Harness for a 2011 Buick Enclave
    Trailer wiring harness # 118270 is not a confirmed fit for the 2011 Buick Enclave but we do have wiring harnesses that will fit. For your 2011 Enclave you can use # 118450 which plugs in line with the vehicle tail light wiring. I have included a link to a video showing an example installation for you.
    view full answer...
  • Is it Hard to Route Trailer Wiring Power Wire to the Battery on a 2016 Chevy Traverse LTZ
    Routing of a trailer wiring harness power wire isn't all that difficult at all. It just takes time. I have included a link to a help article I wrote with tips on routing the power wire. But you won't have to route a power wire at all if you use trailer wiring harness # 118270 on your 2016 Chevy Traverse. It plugs into a factory connector already on the vehicle and includes the relays and fuses to make it active. I have linked a video showing an example installation for you.
    view full answer...
  • 4-Pole Trailer Wiring Harness for 2013 Chevy Traverse LTZ AWD
    For your 2013 Chevy Traverse, you'd want to use the part # 118270 trailer wiring harness. In addition to the wiring harness, the fuses and relays needed to activate the trailer illumination wiring portion of the tow package are included. If you click the provided link, you an see the installation instructions as well as an install video. The # 118450 you referred to fits Traverse models up through the 2012 model year, and wouldn't work on your 2013 Traverse.
    view full answer...

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Info for this part was:

Employee Mike L
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Employee Adam R
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Employee Jeffrey L
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Employee Joshua S
Video Edited:
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Employee Kathleen M
Video by:
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Employee Michael B
Video by:
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Employee Laura H
Written by:
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Employee Cole B
Installed by:
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