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  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. 7 Blade
  4. Trailer Hitch Wiring
  5. No Tow Package
  6. Vehicle End Connector
Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter - 7 Way Trailer Connector
Tekonsha

Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter - 7 Way Trailer Connector

Part Number: TK22115
In Stock
$217.61
Retail:$325.59
You Save: $107.98
Custom Fit Vehicle Wiring

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Replace the 7-way, RV-style trailer connector on your vehicle with this T-One harness. ModuLite reduces strain on wiring system. Brake controller adapter attaches to included body harness and lets you easily plug in your electric brake controller. 1-800-940-8924 to order Tekonsha custom fit vehicle wiring part number TK22115 or order online at etrailer.com. Free expert support on all Tekonsha products. Great prices and Fastest Shipping for Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter - 7 Way Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
  • All Info
  • Reviews (23)
  • Q & A (0)
  • Photos

Tekonsha Custom Fit Vehicle Wiring - TK22115

  • 7 Blade
  • Trailer Hitch Wiring
  • No Tow Package
  • Vehicle End Connector
  • Tekonsha
  • Plug-In
  • Powered Converter
  • Plug and Lead
  • Visible

Replace the 7-way, RV-style trailer connector on your vehicle with this T-One harness. ModuLite reduces strain on wiring system. Brake controller adapter attaches to included body harness and lets you easily plug in your electric brake controller.


Features:

  • Towing prep kit replaces damaged factory 7-way, blade-style trailer connector at the back of your vehicle
    • Enables your truck to power your trailer's signal lights
    • Compatible with 4-pole, 5-pole, and 6-pole adapters (sold separately)
  • T-One connects quickly and easily
    • Plug into connection points behind tail lights
    • Run body harness up to car battery
  • Included tail light converter ensures that your vehicle's wiring matches that of your trailer
  • Wiring adapter eases installation of your electric brake controller
    • Wire end connects to included body harness and vehicle battery
    • Other end plugs into the back of your electric brake controller
      • Compatible time-delayed brake controllers: Draw-Tite Activator I (5100), Draw-Tite Activator II (5500), Draw-Tite Activator III (5520) and Tekonsha PowerTrac (39523)
      • Compatible proportional brake controllers: Tekonsha Prodigy (90185), Tekonsha P2 (90885), Tekonsha P3 (90195), Tekonsha Primus IQ (TK90160) and Tekonsha Voyager (39510)


Specs:

  • Maximum amperage:
    • Stop/turn lights: 4.2 amps per circuit
    • Tail lights: 7.5 amps per circuit
  • 1-Year limited warranty


Installation of Tekonsha T-One Connector

This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. You will have to remove some bumper fascia, interior paneling, vent covers, and the tail light assemblies to access this harness. Once you've plugged in the T-connector, run the body harness up to your car battery and connect the wires per the included instructions.


T-One Connection Location Points Behind Tail Lights

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.


ModuLite Powered Tail Light Converter

A ModuLite power module is built into this T-One connector. Because your vehicle runs on a multiplex wiring system, the wiring needs to be converted to be compatible with the wiring system of your trailer. This power module functions as a tail light converter to combine the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your vehicle operate.


With a ModuLite, your trailer's lights will be powered without overloading your vehicle's electrical system. Because the module draws power directly from your car's battery and bypasses the electrical routes that are used by a basic wiring harness, there is virtually no draw on your tail light circuits.


Installation of Tekonsha Brake Controller Adapter

This adapter hardwires to the body harness that is included in this kit. Just connect the black wire from the brake controller adapter to your car battery, and connect the white wire to a suitable ground. The remaining wires can then be easily spliced into the body harness with the included butt connectors.


This adapter is designed to plug directly into your electric brake controller. Because the harness does not hardwire to your controller, installation is not permanent. You can unplug and remove your brake controller at any time and securely stow it away.



22115 Tekonsha Replacement Harness with Brake Control Adapter for Factory Tow Package - 7 Pole - Modu-Lite

Installation Details TK22115 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.6

23 reviews
Replace the 7-way, RV-style trailer connector on your vehicle with this T-One harness. ModuLite reduces strain on wiring system. Brake controller adapter attaches to included body harness and lets you easily plug in your electric brake controller.

by:

Works better than the Merceds Benz one we replaced with.



by:
2014 Mercedes-Benz Sprinter

I used this wiring harness on my 2014 Sprinter. The instructions for this product was spot on, and i very much liked how it was plug and play, no wire splicing. The harness plugged right into the factory harness just like it came from the factory. It did take a little bit on my part fishing the wires thru the cavity wall supports and keeping it neat and organized, but overall 5 stars. Sorry, i forgot to take pics.

Thanks etrailer

Tony D. profile picture

Tony D.

2/11/2021

Great, no issues.



by:

Works great- we love etrailer!



by:
Mercedes-Benz

Much less expensive than Mercedes part, which didn’t work and had no instructions. Easy but tedious installation. Still working fine though I prefer to leave the end connector inside the van except when in use to avoid corrosion.



by:

The harness served it's purpose. The connectors weren't the greatest. When we'd push the connector on, the pins would push back and it would not make good contact. So we had to fix that. But it served it's purpose. Thank you!



by:
Mercedes-Benz Sprinter

Best sprinter wiring kit. Do yourself a favor and save time and hassle with this kit. Also seems much better at blocking corrosion to sensitive areas (than diy) as you don't need to splice anything outside of the vehicle.



by:

Service is great. However, I think I should be able to buy an additional wiring harness to be able to move the controller between two vehicles.



by:

Harness worked great and continues after a year of use



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2015 Ram 3500

Easy install, and fits perfectly on my 2015 Freightliner Sprinter 3500 DRW.



by:

Great customer service and follow through. Product as described.



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Fair price. Fast shipping



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2019 Mercedes-Benz Sprinter 2500



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2015 Mercedes-Benz Sprinter



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2015 Mercedes-Benz Sprinter



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2015 Mercedes-Benz Sprinter



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2020 Mercedes-Benz Sprinter 3500


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

  • Recommended Trailer Hitch and Wiring for 2022 Mercedes-Benz Sprinter 2500 with Step Under Bumper
    The trailer hitch I recommend for a 2022 Mercedes-Benz Sprinter 2500 with factory step bumper is the etrailer Trailer Hitch Receiver part # e82TR which offers a direct bolt-on fit so there's no drilling required. This trailer hitch is rated up to 7,500 lbs which is the highest available for this vehicle. The max the vehicle can tow is 5,000 lbs so there is no need to go much further over this. In regards to the trailer wiring, I recommend the T-One Vehicle Wiring Harness part # TK22115...
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  • Brake Controller Installation on 2016 Mercedes-Benz Sprinter
    Assuming your Sprinter has the factory tow package with the 7-way at the rear bumper, in addition to the # RED24FR Redarc Tow-Pro Liberty Brake Controller, you'll also need the # 3063-P wiring harness and the # 331-TPH-017. The connector to install the controller is located under the driver's seat as shown in the provided photo. If the Sprinter doesn't have the factory 7-way, you can install one using part # TK22115, you'll also need the # 331-TPH-017 adapter mentioned above.
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  • Recommended Trailer Hitch For 2020 Mercedes-Benz Sprinter 2500 Long Wheelbase Standard Bumper
    As long as your 2020 Sprinter 2500 with the 170 inch wheelbase and standard bumper isn't a passenger van and the frame members do NOT measure 30-3/8 inches apart measured outside of frame to outside of frame, the Curt Class III hitch, part # C13388 will fit perfectly. If you have the passenger version, you'll want to use the Draw-Tite # 75549 instead. If you'll be towing with the hitch, you'll also need a trailer wiring harness like part # TK82VR for a 4 pin connector or # TK22115 for...
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  • Is There a Trailer Wiring Harness for a 2017 Mercedes Sprinter 2500 That Has Both 4 and 7-Ways
    The Tekonsha OEM Replacement Vehicle Wiring Harness part # TK22115 is a great option for a 2017 Mercedes-Benz Sprinter 2500. It as you noted has a 7-way plug but there isn't a complete harness with both 4 and 7-way plugs as is. Therefore, I suggest just adding the 7- and 4-Pole Trailer Connector Socket part # HM40975 which also comes with a bracket that you'll need.
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  • 7-Way Trailer Wiring Kit for 2015 Mercedes-Benz Sprinter
    Yes, the Tekonsha 7-way kit part # TK22115 is exactly what you need. It is a 7-way kit designed to fit your 2015 Mercedes-Benz Sprinter that did not have the factory connector. This is what you'd need for a new install that didn't have any trailer wiring currently.
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  • Towing Wiring Harness For Mercedes Sprinter 2500
    We do not recognize this connector that you have provided a picture for but we have a solution. We do not have an adapter to go between that plug and a 7-way connector. However you can create your own 7-way jack for your trailer to plug into. You will need to install a Tekonsha # TK22115 wiring harness that includes the 7-way connector for the back of your Sprinter. If you will be towing a trailer with brakes, you will additionally need the Tekonsha # 90195 brake controller. This installs...
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    Image 1 for
  • Towing Setup for a 2020 Mercedes-Benz Sprinter 2500 w/ Factory Step Bumper and a 144WB
    Yes, we do sell a hitch that is compatible with the factory step bumper on your 2020 Mercedes-Benz Sprinter 2500. It is the Draw-Tite Max-Frame Trailer Hitch Receiver item # 75601. This hitch is custom fit and designed to fit the 144WB of your Sprinter van. I have attached an installation video. This hitch also comes with a bracket to mount a 7-way vehicle connector. I recommend the Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter - 7 Way Trailer Connector item...
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  • Recommended Trailer Hitch Receiver and Wiring for 2021 Mercedes-Benz Sprinter 2500 With 144 Inch WB
    For your 2021 2021 Mercedes-Benz Sprinter 2500 with a 144" wheelbase and standard bumper I recommend the Draw-Tite Max-Frame Trailer Hitch Receiver # 75549. This is a custom fit Class III hitch with a 2" receiver. IT has a maximum gross trailer weight of 6,000 lbs and tongue weight of 600 lbs. It features a black powder coat finish and comes with a limited lifetime warranty. For wiring, if you would like to have the option of a 7-way, the Tekonsha OEM Replacement Vehicle Wiring Harness...
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  • Parts Needed To Tow Trailer With 2016 Mercedes-Benz Sprinter 2500
    In order to tow your trailer you will first need a 7-way connection if you don't have one already. I recommend the Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter - 7 Way Trailer Connector # TK22115. Once installed you will be able to use a brake controller and power the electric brakes on your car hauler. I would definitely add a brake controller so you can use the brakes on your trailer. For a brake controller, I recommend the Redarc Tow-Pro Liberty # RED24FR....
    view full answer...
  • 2021 Mercedes-Benz Sprinter 2500 Wiring Mounting Bracket Options for Curt Trailer Hitch
    To hang a wiring connector from the Curt Trailer Hitch Receiver # C13388 on your 2021 Mercedes-Benz Sprinter 2500 you need a No-Drill Mount Bracket # C57202 and then you can use the Bracket # 18144 for the 4-Way # C59236 or the Bracket # 18138 for the 7-Way # TK22115.
    view full answer...
  • Connecting a Brake Controller Red Wire on a 2017 Mercedes Sprinter 2500
    Your 2017 Mercedes Sprinter 2500 may actually have brake controller port or wiring harness that you can use to install a brake controller. I have included a link to a video that may help. It is on a slightly older Sprinter but can be used as a guide. The 2006 to 2018 are part of the same generation. If the van has a third brake light (CHMSL: center high mount stop lamp) and it is the only thing on that fuse you could use it to attach to the red brake controller wire. The white ground...
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  • Van build and Recommended Receiver Hitch for 2021 Mercedes-Benz Sprinter 2500
    If your 2021 Mercedes-Benz Sprinter 2500 has the factory step bumper, I suggest the Curt Trailer Hitch Receiver, # 13358. If you have the standard bumper, then the Curt Trailer Hitch Receiver, # C13388. Both of these are Class III hitches that are fully welded in their construction and have received an excellent powder coated finish. They are a bolt-on installation and each will fit the long or short wheel base version, type bumper that is in place is the deciding factor for over the...
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    Image 1 for Image 2 for Image 3 for
  • Prodigy P3 Brake Controller Installation in 2015 Mercedes-Benz Sprinter
    If you don't have the factory tow package on your 2015 Mercedes-Benz Sprinter, the Tekonsha Wiring Harness # TK22115 will replace the 7-way, the brake controller adapter attaches to included body harness and lets you easily plug in your electric brake controller. and this will be all you'll need to complete your P3 installation.
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  • Which Trailer Hitch For A 2021 Mercedes-Benz Sprinter 2500 Gives The Most Ground Clearance?
    For your 2021 Mercedes-Benz Sprinter 2500 with the standard bumper, the Curt # C13388 and the Draw-Tite # 75549. While we have not had a chance to install both of these hitches yet, when we measured these hitches we found that from the center of the upper mounting hole to the bottom of the hitch on the Draw-Tite # 75549 measured 12-1/4" where the Curt # C13388 measured 11" which you can see in these diagrams, meaning the Curt hitch will sit closer to your bumper and give you better ground...
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    Image 1 for Image 2 for
  • Best Trailer Hitch For 2021 Mercedes-Benz Sprinter 2500 W/ 170 Wheelbase and Standard Bumper
    For your 2021 Mercedes-Benz Sprinter 2500 with the 170" Wheel Base and standard rear bumper I recommend going with the Curt Trailer Hitch # C13388 due to it being made in the USA, and giving you 1" more ground clearance than the other available trailer hitch, the Draw-Tite # 75549. Keep in mind this hitch will only fit if your van is the cargo version, and not a passenger van. If you will be towing a trailer with your Sprinter then you will also need a vehicle wiring harness # C59236...
    view full answer...
  • Recommended Trailer Hitch for 2017 Mercedes Sprinter 2500 With Factory Step Bumper
    For your 2017 Mercedes-Benz Sprinter 2500 with a 170" wheelbase and factory step bumper I recommend Curt hitch # 13358. This hitch has a 2" receiver and is a complete bolt-on installation so no drilling in your Mercedes' frame is going to be required for installation; it is a Class III hitch with a 5,000 lb towing capacity and 500 lb tongue weight capacity. The only thing to keep in mind is that this hitch will not fit if your Sprinter has a 30-3/8" frame. If you plan on towing and your...
    view full answer...
  • Fit of Draw-Tite Class III # 75601 Trailer Hitch on 2015 Mercedes Sprinter w/ 144 Inch Wheelbase
    The Draw-Tite Class III Hitch, part # 75601 will fit a 2015 Mercedes-Benz Sprinter with the 144 inch wheelbase and factory step bumper unless the outside to outside dimension of the frame members is 30-3/8 inches (which is found on cab/chassis models and not passenger vans). You can see the installation details by clicking the link I provided for you. To complete your towing system, I'd recommend the following: Trailer wiring harness w/ 4 pole trailer connector, part # TK22115 Ball mount,...
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  • Trailer Hitch Fit for 2016 Mercedes-Benz Sprinter 2500 Passenger Van With Factory Step Bumper
    There is a trailer hitch that will fit your 2016 Mercedes-Benz Sprinter 2500 passenger van with a factory step bumper, so long as it does NOT have a 30-3/8" frame, measured outside to outside of frame. The correct hitch, which fits either 170 inch wheelbases or 144 inch wheelbases is: - Draw-Tite Trailer Hitch Receiver # 75601 I do want to mention that just from the picture you sent in, it does not look like you have the step bumper, it looks like you may have the standard bumper. If...
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    Image 1 for
  • Trailer Hitch for 2019 Sprinter 2500, 144"WB, and Std. Bumper
    Yes, the Draw-Tite # 75549 hitch you referenced will fit your 2019 Mercedes-Benz Sprinter 2500 with 144" wheelbase, standard rear bumper, and frame measuring 39-1/4" outside dimension. This installation will not require you to drill any holes and will not interfere with your spare. If you will be towing you need a tow ball and ball mount. Without knowing the offset between the trailer and tow vehicle I can't recommend a specific item, but, I have supplied a link to an FAQ below regarding...
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  • Width of Draw-Tite Trailer Hitch for 2016 Mercedes-Benz Sprinter 3500
    The Draw-Tite Trailer Hitch # 75549 measures 35-1/2 inches wide, and will fit your 2016 Mercedes-Benz Sprinter 300 so long as the Sprinter has a standard bumper and does NOT have the smaller 30-3/8 inch frame from outside to outside. I have added a link to a video showing this hitch being installed on a '16 Sprinter 300 for you to check out as well. If you need trailer wiring and a brake controller use the Vehicle Wiring Harness w/ Brake Controller Adapter - 7 Way # TK22115 with the...
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  • Recommended Plug And Play 7 Way Trailer Connector For A 2019 Mercedes-Benz Sprinter 2500
    When it comes to installing a plug and play 7 way harness on your 2019 Mercedes-Benz Sprinter 2500 The Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter - 7 Way Trailer Connector # TK22115 is confirmed for your vehicle. The custom-fit harness plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. I attached a review video link below.
    view full answer...
  • Trailer Hitch, Wiring, and Brake Controller Recommendation for 2016 Mercedes Sprinter 2500
    Yes, for your 2016 Mercedes Benz Sprinter 2500 the Draw Tite hitch part # 75549 is a fit and my recommendation for your application as it has the capacity you need and installs easily as well. I attached an install video for this for you to check out as well. To install a 7-way all you need is the # TK22115 and then the easiest solution for a brake controller is the Curt Echo Mobile part # C51180 which basically just plugs into an active 7-way and once synced to your smart phone is ready...
    view full answer...
  • Recommended 7-Way Adapter for a 2016 Mercedes Sprinter 2500
    No, it will not but I have one that does. For your 2016 Mercedes Sprinter 2500 you'll want the Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter item # TK22115. This wiring harness includes everything you need to add a 7-way connector to your van. Additionally, the Tekonsha item # TK22115 also includes a plug in adapter that works with brake controllers like the Tekonsha Prodigy P2 item # 90885. What kind of trailer are you looking to tow?
    view full answer...


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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Dustin K
Video by:
Dustin K
Employee Cole B
Installed by:
Cole B
Employee David F
Installed by:
David F
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B
Employee Alexander C
Written by:
Alexander C

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