bing tracking image
  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 7 Round - Blade
  6. Powered Converter
Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter - 7 Way Trailer Connector

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

Retail:$351.77
Our Price: $256.28
You Save: $95.49
Custom Fit Vehicle Wiring

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Shipping Weight: 7 lbs
Add to cart
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Need help with installation?
Locate installers near me
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 (20)
  • Q & A (0)
  • Photos

Tekonsha Custom Fit Vehicle Wiring

  • Custom Fit
  • Trailer Hitch Wiring
  • 7 Round - Blade
  • Powered Converter
  • Tekonsha

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

Item # TK22115

Installation Details TK22115 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter - 7 Way Trailer Connector - TK22115

Average Customer Rating:  4.5 out of 5 stars   (20 Customer 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:

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:
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.

2/11/2021

Great, no issues.



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:
2015 Ram 3500

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



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:
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:

Fair price. Fast shipping



by:

Harness worked great and continues after a year of use



by:



by:

Great customer service and follow through. Product as described.



by:
2019 Mercedes-Benz Sprinter 2500



by:



by:



by:



by:



by:
2015 Mercedes-Benz Sprinter



by:
2015 Mercedes-Benz Sprinter



by:



by:
2015 Mercedes-Benz Sprinter



by:
2020 Mercedes-Benz Sprinter 3500


20
20

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

  • 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.
    view full answer...
  • Troubleshooting Error Messages After Install Of Tekonsha 7-Way in Sprinter
    This is most likely connectors that aren't seated properly from the Tekonsha kit part # TK22115 that you installed. I would recommend basically just unplugging them and plugging them back in.
    view full answer...
  • 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.
    view full answer...
  • Does Tekonsha OEM Wiring Harness Kit TK22115 Fit Extended Wheelbase Sprinter
    Tekonsha OEM Replacement Vehicle Wiring Harness Kit # TK22115 fits the 2014 Freightliner Sprinter without factory tow package, both the short and long wheelbase versions. Since Sprinters are offered in more than one wheelbase length this kit is made to work with all of them, even the 170-inch extended version. I confirmed this with my contact at Tekonsha. This kit includes the brake controller wiring adapter needed to install one of the excellent Tekonsha trailer brake controllers such...
    view full answer...
  • 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...
    view full answer...
  • 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.
    view full answer...
  • Trailer Hitch That Fits 2015 Mercedes-Benz Sprinter 2500 With Factory Step Bumper
    We do have a trailer hitch that will fit your 2015 Mercedes-Benz Sprinter 2500 but the Curt C13388 does NOT fit models with a step bumper so instead you need the Curt Trailer Hitch Receiver # 13358. This will fit your '15 Mercedes Sprinter 2500 so long as it has the factory step bumper, although please keep in mind this hitch does not fit models with a 30-3/8" frame, which is measured outside to outside of the frame. If you plan on towing and your trailer has electric brakes, use the...
    view full answer...
  • 2020 Mercedes-Benz Sprinter 2500 Draw-Tite 7-Way Connector Mounting Bracket
    I recommend the Draw-Tite mounting bracket for 7-Way connectors item # 18138 for your 2020 Mercedes-Benz Sprinter. This bracket will install to the left of the receiver opening on your Draw-Tite hitch item # 75549 on the steel tab that is on the frame of the hitch receiver. This will allow you to attach your Tekonsha 7-Way connector item # TK22115 directly to your hitch receiver for easy access. I have attached a link that will demonstrate the ease and access this mounting bracket will...
    view full answer...
  • 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...
  • 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...
    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...
    view full answer...
  • Trailer Hitch for 2016 Mercedes Sprinter 2500 Passenger Van w/ 144 Inch Wheelbase & Standard Bumper
    We do have the right trailer hitch receiver that fits your 2016 Mercedes-Benz Sprinter 2500 passenger van with a 144 inch wheelbase and standard bumper, from Draw-Tite. The correct hitch is the Draw-Tite Trailer Hitch Receiver # 75549. Then, if you plan on doing some towing with your van and need a wiring harness and brake controller use the Vehicle Wiring Harness w/ Brake Controller Adapter - 7 Way # TK22115 with the Prodigy P3 Brake Controller # 90195.
    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...
  • 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...
    view full answer...
    Image 1 for
  • 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...
  • 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...
    view full answer...
  • Best Way to go From 4-Way to 7-Way for 2017 Mercedes Sprinter 2500
    If the travel trailer with a 7-way does not have brakes the easy solution is the # 37185 which would plug right into your current 4-way and all of the lighting circuits would be active. If instead you did have trailer brakes you'd want to use the # ETBC7 which comes with brake controller wiring needed as well as the same adapter of the # 37185. The 7-way kit part # TK22115 which is custom fit for you vehicle essentially is the same setup as a 4-way like you have converted to a 7-way with...
    view full answer...
  • 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...
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • 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,...
    view full answer...
  • 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...
    view full answer...
    Image 1 for
  • Is There a 7/4-Way Trailer Connector Plus Brake Controller For a 2018 Mercedes Sprinter 2500?
    To get a 7/4 connector on your 2018 Mercedes-Benz Sprinter Steve, you are going to have to combine the Tekonsha OEM Replacement Vehicle Wiring Harness # TK22115 with the 7- and 4-Pole Trailer Connector Socket # HM40975. The connector will connect directly to the Tekonsha wiring. If you are going to need a brake controller check out the Redarc Tow-Pro Elite Brake Controller for Tekonsha Harness # RED63RR as it will plug directly into the harness included from Tekonsha.
    view full answer...
  • Does The Spare Tire Need To Be Removed to Install Curt Hitch On 2019 Mercedes-Benz Sprinter 2500
    According to Curt you will not need to remove the spare tire when you install part # C13388 as long as it is a standard spare tire size. As long as the 2019 Mercedes-Benz Sprinter 2500 is a 170 or 144 inch wheel base, standard bumper and is not a passenger van this hitch is confirmed to fit without removing the spare tire. If you need wiring, I recommend Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter part # TK22115 because it is the easiest way to install...
    view full answer...
  • 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...
    view full answer...
  • 2021 Midwest Automotive Designs Passage 170 Ext Ball Mount and Wiring Harness
    For your 2021 Midwest Automotive Designs Passage 170 EXT Sprinter van I recommend the Tekonsha Tekonsha OEM Replacement Vehicle Wiring Harness w Brake Controller Adapter - 7 Way Trailer Connector item # TK22115 if you are needing a 7-way connector. If you are only needing a 4-way connector to control lighting functions on your trailer you will want the Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector # C59236. To round out your towing setup I recommend the Curt Towing...
    view full answer...


< Previous
12



Do you have a question about this Custom Fit Vehicle Wiring?


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

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


Product Experts Available Now!
Call 1-800-940-8924