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

T-One Vehicle Wiring Harness for Factory Tow Package - 7-Way Trailer Connector

Item # 118276
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Custom Fit Vehicle Wiring

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Custom Fit Vehicle Wiring 118276 - Custom Fit - Tekonsha
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In Use/Installed

Quickly and easily install a 7-way, RV-style trailer connector on your vehicle with this custom wiring harness. T-One connector plugs into OEM tow package wiring harness - no cutting, splicing or tapping required. Call 800-298-8924 to order Tekonsha custom fit vehicle wiring part number 118276 or order online at etrailer.com. Free expert support on all Tekonsha products. Guaranteed Lowest Price and Fastest Shipping for T-One Vehicle Wiring Harness for Factory Tow Package - 7-Way Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
  • All Info
  • Reviews (15)
  • Q & A (26)
  • Photos
  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118276

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

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


Features:

  • Provides a 7-way, blade-style 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 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 bumper
    • Plug in T-connector
  • Constructed of 16-gauge bonded wire
  • 1-Year limited warranty


Installation

This custom-fit T-One connector plugs into your vehicle's factory tow package wiring harness, which is located behind the access cover at the center of your rear bumper.


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 plugs on your automobile and the 7-pole connector itself - to help prevent corrosion.



118276 Tekonsha T-1 T-Connector - OE Replacement - 7-Way

Installation Details 118276 Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

T-One Vehicle Wiring Harness for Factory Tow Package - 7-Way Trailer Connector - 118276

Average Customer Rating:  4.9 out of 5 stars   (15 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 OEM tow package wiring harness - no cutting, splicing or tapping required.

- 118276
by:
2020 Chevrolet Blazer

916842



- 118276
by:
2018 GMC Acadia

I was able to hook this up to my 2018 GMC Acadia without jacking the vehicle up or removing the bumper! It took about 5 minutes to install and worked without an issue! 900744



- 118276
by:

This product was a perfect fit for my 2019 Acadia. The instructions and even video were spot on. I couldn't ask for a better experience. Etrailer has exceeded all my expectations as an online resource. I am a mechanic and business owner and I did not expect this kind of support with video instruction from an online retailer. I will continue to use and promote etrailer to all my friends, family, and customers. Thanks etrailer for making my life easier. 790118



- 118276
by:

etrailer has excellent customer service personnel, who are knowledgeable, very friendly and polite. They have timely communications about your order, shipment and delivery. The quality of the products that I have purchased from them has always been very good. The instruction videos are thorough and will safe you many installation problems. I just installed a hidden trailer hitch on my 2020 GMC Acadia Denali without problems by using the video as my guide. 785042



- 118276
by:

Came faster then expected well packaged and not damaged at all not my first order with e trial and will not be the last. 669094



- 118276
by:

Fast shipping & well packaged 668510



- 118276
by:

Excellent 611017



- 118276
by:
2017 Cadillac XT5

easy to connect to vehicle connectors 504397



- 118276
by:

Does the job. Fairly easy install and is what I expected 504716



- 118276
by:
2017 Cadillac XT5

Rather difficult to install. The "how to" video helped a lot. Had difficulty removing protective caps on wiring on vehicle. 498429


Comments
The linked install video shows the plugs being removed beginning at the 1:40 mark. If the dummy plug is hard to remove, it can be pried away gently with a small screwdriver.
-- Mike L - 04/20/2018

37484
Comments
No problems with it.
Thomas - 04/19/2019

54145

- 118276
by:

5 Min. Installation, Plug & Play Removing Cadillac's connector cover was tough!! 480361



- 118276
by:
2017 Cadillac XT5

Product arrived quickly and in good condition. All necessary parts were included. The directions and video on installation were accurate and made the process easy. 471574



- 118276
by:
2017 arcadia Acadia

Work well for my 2017 Arcadia which is a newly designed model. I was not sure if this item would be an exact "plug in" for my application considering my vehicle did not come with a factory trailer package. etrailer did some checking with the manufacturer to verify it would be and easy plug in. It did plug in and worked perfectly. 437948



- 118276
by:
2017 Cadillac XT5

Watch video on removal of dust covers one of them is real tricky on Cadillac ZT5. My on concern about the hitch is the 7 way plug is round and the bracket is oval so they don't work together. All in all nice setup! 431042



- 118276
by:
2017 GMC Acadia

Everything worked great. Original equipment quality 377468


16
16

Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

  • Is There a Plug-In-Play Trailer Wiring Harness for 2019 Chevy Blazer with 4 and 7-Way
    I do have an option to obtain both a 4 and 7-way trailer connector on a 2019 Chevrolet Blazer but all of the plug-in-play harnesses like the T-One Vehicle Wiring Harness part # 118276 only come with either a 4-way or 7-way, not both. However, all you need to do to obtain both is purchase one of the plug-in-play 7-way trailer wiring harnesses and then replace the plug on it with the 7- and 4-Pole Trailer Connector Socket part # HM40975. In regards to brake assist, there will be no additional...
    view full answer...
  • Do Fuses Need to Be Installed on 2018 GMC Acadia to Install 7-Way Kit # 118276
    When installing the T-One 7-Way kit part # 118276 on your 2018 GMC Acadia no additional fuses would need to be installed under the hood of the vehicle. It simply plugs in like the install video and instructions I attached below show and you're set.
    view full answer...
  • Differences Between Available Trailer Hitches for 2020 GMC Acadia
    The main difference between the two is that the Draw-Tite Class III, part # 76023 is mostly concealed behind the bumper, more like the OEM hitch would be, and the Curt # C13293 installs so that the receiver tube is right under the rear bumper fascia. Because of this, the Draw-Tite offers a better appearance as well as a couple of inches of additional ground clearance. I've provided you with side by side photos of what the hitches would look like once they're in place, as well as with...
    view full answer...
  • Differences Between Available Hitches for 2020 GMC Acadia
    The primary difference between the two is the height of the receiver tube once the hitch is installed. Both hitches use a crossbar that tucks up behind the bumper fascia for a clean looking installation but the Draw-Tite # 76023 will sit higher up on the vehicle and extend through the bumper fascia as shown in the provided comparison photo. This provides for improved clearance which could come in handy if you ever back out of steep driveways. For the trailer wiring harness, use part...
    view full answer...
  • Trailer Wiring Harness for a 2019 GMC Acadia Without the Factory Tow Package
    From the information I can find I believe your 2019 GMC Acadia will have the wiring routed back towards the rear of your vehicle whether you have the factory tow package or not (see attached photo). If you check up under the rear bumper of your Acadia you should find the wiring harness that you would plug the T-One # 118720 (for a 4-Way) or # 118276 (for a 7-Way) into. I have attached some installation videos on a 2017 Acadia as well as the written instructions for you to reference. I like...
    view full answer...
  • Is Splicing Required To Install a Trailer Wiring Harness On a 2020 Cadillac XT5
    The 2020 Cadillac XT5 has a tow package port which is located behind the rear bumper fascia. Therefore, you can use a plug-in-play wiring harness which does not require any wire splicing or cutting. I recommend the T-One Vehicle Wiring Harness part # 118720 if you need a 4-way or part # 118276 if you need a 7-way. The 7-way would be needed if the trailer has brakes and in which case you would also need a brake controller. I recommend the Curt Echo Mobile Trailer Brake Controller part #...
    view full answer...
  • Trailer Hitch Recommendation for 2019 Chevy Blazer
    I recommend the Draw Tite hitch part # 76023 for your 2019 Chevy Blazer because it allows you to reinstall the rear bumper cover over it when not in use (if present) to give you a totally concealed look and has great towing capacities as well. It also fits the RS and non-RS models as well. I attached an install video for this hitch on a similar Blazer as yours for you to check out as well. If you need trailer wiring and your trailer has a 4-way connector the harness you'd want is the...
    view full answer...
  • Recommended Trailer Hitch and Wiring Harness for a 2017 GMC Acadia
    All of the 2017 GMC Acadia's came with the factory tow package wiring. In order to add a trailer connector to the vehicle you would want to use part # 118720 for a 4-way or part # 118276 for a 7-way. These custom fit connectors will plug into your factory wiring harness which is located behind the access cover at the center of your rear bumper. In order to mount the connector to a hitch you will first need to use part # 18140 and then part # 18144 for the 4-way connector or part # 18138...
    view full answer...
  • Is Lighting Required to Tow a Boat Trailer with a 2017 GMC Acadia
    Thank you for all of the information and questions. It's never a bad thing to ask more questions when you are venturing out and doing something new. And at least your time in Covid isolation hasn't affected your sense of humor! To kick things off you will need the trailer hitch like the Draw-Tite # 76023 you were looking at as well as some wiring to legally tow on the road with your 2017 GMC Acadia. If you were just moving the boat trailer from your shed to a lake on the same piece of...
    view full answer...
  • Trailer Hitch Receiver Fit for 2018 Cadillac XT5
    A trailer hitch from a 2013 Cadillac SRX will not fit your 2018 Cadillac XT5, which means you will need a new hitch. The hitch I recommend for your 2018 Cadillac XT5 is the Draw-Tite Trailer Hitch Receiver # 76022. I like this hitch above the Curt Trailer Hitch # C13285 because the Draw-Tite has slightly better ground clearance than the Curt, which is important to keep things like accessories from hitting the ground. I have added a photo showing with this hitch looks like on a 2018...
    view full answer...
  • How to Remove Access Panel and Install a Brake Controller on a 2018 GMC Acadia
    Your 2018 GMC Acadia actually has blunt cut wires for you to splice in a brake controller like the Tekonsha Prodigy P3 # 90195. The last Acadia to use the Adapter # 3026-P that you referenced was the 2017 Limited which was the same as the 2016 model year. The 2017 New Body and newer have the blunt cut wires up under the dash. I took a look at the online version of the owner's manual for your 2018 Acadia and on page 278 it says that the blunt cut wires can be found above the parking...
    view full answer...
  • Trailer Hitch and Wiring for a 2020 GMC Acadia
    We have everything that you need to start towing with your 2020 GMC Acadia! I recommend using the Draw-Tite Trailer Hitch # 76023 because it mounts behind the rear bumper and has a very clean look with the lower panel removed. Then for wiring I recommend pairing the T-One # 118276 with the Hopkins # HM40975 which gives you a plug and play wiring kit with both 4-Way and 7-Way connectors. I have linked installation videos of the trailer hitch and wiring on a 2019 Acadia that you can reference. To...
    view full answer...
  • Trailer HItch and Wiring Recommendation for 2018 GMC Acadia
    For your GMC Acadia the best hitch option we have is the Draw Tite part # 76023. The reason I recommend this hitch is that when not in use you can install the bumper cover on top of it and it would be totally hidden. Then for trailer wiring the T-One kit part # 118720 is the best option for if you need a 4-way or part # 118276 for if you need a 7-way. This is our best and most reliable brand of trailer wiring so we recommend it the highest. If you wanted to do some towing you might...
    view full answer...
  • Plug and Play Wiring Kit for a 2018 GMC Acadia
    Are you looking for a 4-way or 7-way connector to tow a trailer? We actually have both that are plug and play that fit your 2018 GMC Acadia. If so the 4-way I recommend is part # 118720 and the 7-way is part # 118276. I've linked videos of them both installed onto a 2017 Acadia which uses the same parts. If you're actually looking for wiring so you can tow your Acadia behind a motorhome then we don't have a plug and play at this time. The easiest lighting kits to install are magnetic...
    view full answer...
  • Recommended Trailer Hitch and Wiring for 2017 Cadillac XT5 Base Model
    Yes, the Curt Class III Hitch Receiver # C13285 is confirmed to fit your 2017 Cadillac XT5 base model. It will use existing holes in the vehicle's frame for a no-drill installation and features a towing capacity of 5,000 pounds. I have attached an installation video that you can also use for reference. For a trailer wiring harness I recommend going with the Tekonsha T-One # 118720 if you need a 4-Way connector or the Tekonsha # 118276 if you need a 7-Way. These are both custom harnesses...
    view full answer...
  • Can a Brake Controller be Installed on a 2017 GMC Acadia All Terrain
    On your 2017 GMC Acadia All Terrain, if it has a factory installed 7-Way trailer connector at the back, there is a factory port to plug in a brake controller. You would use wiring harness # 3026-P. Then for a brake controller I recommend the P2 # 90885 because it is easy to set up and use and it is reliable. If your Acadia did not come with a factory trailer connector at the back then you can still install a brake controller by hardwiring it in. For that you would first need to install...
    view full answer...
  • Recommended Trailer Hitch And Trailer Wiring For 2017 GMC Acadia Without Factory Tow Package
    The trailer hitch we offer that is designed for your 2017 Acadia is the Draw-Tite, part # 76023. This is a Class lll hitch and it has a 2-inch receiver opening. If you are mechanically inclined you should be able to install the hitch with no problem. If you are not comfortable you can have a trusted mechanic complete the installation for you. I am attaching the installation instructions in a separate email. If you plan on doing some towing you might be interested in etrailer ball mount...
    view full answer...
  • Hitch & Wiring for Towing and for Bike Rack Use on 2017 Cadillac XT5
    We can help you with selecting a 2-inch Class III hitch for your 2017 Cadillac XT5. We offer options from Curt and Draw-Tite that you can see on the linked page. Both hitches offer similar capacities so based on lower cost I recommend the Draw-Tite option # 76022 that you referenced. I linked a complete installation video that shows you the entire process. Towing requires a few additional components. I suggest the etrailer.com Ball Mount Kit # 989900 which includes multiple hitch...
    view full answer...
  • Recommended Trailer Hitch Receiver For 2017 GMC Acadia
    Yes, we do some installations here at our Wentzville, MO location. Let me make sure I get you the right parts for your vehicle and then you can call to set up an appointment if you'd like. For your 2017 GMC Acadia, I recommend the Curt Class III # C13293. This is a 2 inch receiver that will be able to tow well, but also will allow you the greatest variety of accessories for your vehicle. If you will be towing with this hitch, I recommend the Curt T-Connector Vehicle Wiring Harness...
    view full answer...
  • Do Fuses Need to Install When Adding 7-Way to 2017 GMC Acadia
    The 7-way wiring harness part # 118276 which is a fit for your 2017 GMC Acadia does not requre any fuses get installed. It simply plugs in like the install video and instructions I attached below show and you're set. This will work great with the Draw Tite hitch part # 76023 you mentioned as well. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch...
    view full answer...
  • Recommended Trailer Hitch Receiver for 2017 Cadillac XT5 Luxury AWD
    For your 2017 Cadillac XT5 AWD, the manufacturer's specs outlined in your owners manual are the specs we recommend going by so you don't void your warranty. Adding a trailer hitch, transmission cooler, oil cooler or any other parts will not void your warranty as you are protected by the the Magnuson–Moss Warranty Act. This act states, in part, that unless the installation and the part caused a problem then the warranty cannot be voided. I recommend looking it up online. The Draw-Tite...
    view full answer...
  • Trailer Hitch And Wiring Harness For A 2020 GMC Acadia
    A great option for your 2020 GMC Acadia is the Draw-Tite Max-Frame Trailer Hitch Receiver # 76023. It's sleek look blends-in nicely and looks like it came with your Acadia stock when you bought it. Included is a customer's installed hitch as an example. This hitch is powder coated for superior corrosion resistance and the 2" receiver can accommodate a variety of hitch accessories like steps # BBS-1102, bike racks # TS02G, and cargo carriers # C18153, just list a few. With towing being...
    view full answer...
  • Recommended Trailer Hitch Receiver And Wiring For A 2017 Cadillac XT5
    For your 2017 Cadillac XT5, I recommend the Draw-Tite Max-Frame Trailer Hitch Receiver Class III - 2", # 76022. This will give you a very strong trailer hitch with a 2 inch opening for a ball mount or accessories. To install, you will need to remove the rear fascia door that covers the hitch, but it can be reinstalled when not towing with two bolts. Access holes may need to be enlarged by drilling, filing, or rotary tool. This installation is suggested to take 20 minutes for a professional...
    view full answer...
  • Will 7-Way of etrailer 7-Way Upgrade Kit # e99011 Fit 7-Way of 2020 Chevy Blazer
    Yes, the 7-way of the etrailer 7-way upgrade kit part # e99011 will plug into the 7-way at the rear of your 2020 Chevy Blazer. If you didn't have a 7-way all you'd need is the part # 118276 and you'd be set.
    view full answer...
  • Trailer Wiring Connector to Fit a 2018 GMC Acadia
    I recommend either of the Tekonsha wiring harnesses that fit your 2018 GMC Acadia. Tekonsha's wiring has been more reliable than any other brand that we carry. They're both easy to install. You locate connectors behind the rear bumper of the Acadia. The connectors are tucked up there pretty good but if you watch the video I attached you'll see where they are. Skip ahead to about the 1:00 mark to find the installer showing them. If you're going to install a 4-way trailer connector,...
    view full answer...
  • Trailer Wiring Recommendation for 2018 GMC Acadia
    For your 2018 GMC Acadia the best trailer wiring options are the Tekonsha kit part # 118720 for if you need a 4-way or part # 118276 for if you need a 7-way. These install very easily so I recommend them highly.
    view full answer...




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Info for this part was:

Edited by:
Lindsey S
Expert Research:
Jameson C
Video Edited:
Jacob T
Video Edited:
Dustin K
Video Edited:
Chris R
Installed by:
Cole B
Updated by:
Sarah W
Updated by:
Isabelle B
Written by:
Alexander C
Test Fit:
Robert C
Test Fit:
David F

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