bing tracking image
  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. Powered Converter
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Item # 118811
lowest price pledge
Retail:$107.24
Our Price: $66.57
You Save: 38%
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.

Orders above $99 qualify for Free Shipping
Shipping Weight: 1.59 lbs
Quantity: 
In Stock
Custom Fit Vehicle Wiring 118811 - 4 Flat - Tekonsha
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
Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system. 1-833-496-1390 to order Tekonsha custom fit vehicle wiring part number 118811 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 with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
  • All Info
  • Reviews (49)
  • Q & A (0)
  • Photos
  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118811

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • Powered Converter
  • Tekonsha

Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.


Features:

  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily
    • Locate connection points in rear cargo area
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes ModuLite to ensure that your vehicle's wiring matches that of your trailer
    • Powered module connects directly to battery to avoid overloading vehicle's electrical system
  • Constructed of 16-gauge bonded wire
  • Comes with dust cap for 4-way flat connector


Specs:

  • Maximum amperage:
    • Stop/turn lights: 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 wiring harness, which is located in the rear cargo area. You will have to remove the plastic threshold cover, side panels, and cargo trays to access this harness.


Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery and insert the provided fuse.


Once installation is complete, the 4-way flat connector will be stowed in your rear cargo area.


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.


ModuLite Power Module

A ModuLite power module is built into this T-One connector. 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.



118811 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite

Installation Details 118811 Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118811

Average Customer Rating:  4.8 out of 5 stars   (49 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.

by:
Volkswagen

The Tekonsha part works great. I own a VW and "trailer" turn signals hyperflash when car headlights are on. Yet all other light modes work fine. Turn headlights off 100% perfect. It's a VW computer thing. The Curt was worse.


Comments
I finally rid myself of hyperflash issue. I traded VW in on 22 Nissan Frontier ready to tow. Product was great but VW is a problem to wire for electric brakes. Needs an additional $xxx factory module....maybe. Nobody would help me with it. Not etrailers fault. As A Mechanic VW computer systems and wiring are very complex. Not for the novice. Dealer would not even help me with it. Never again VW. Again product was great and so is etrailer. It is a VW issue.
Scott - 05/29/2022


by:
2019 Volkswagen Tiguan

Excellent product. Modified the install to utilize the power available at the rear power port...it worked great, and no pulling wire to the battery.




by:
Volkswagen

Works great and is a fraction of the price of VW kit (which is hard to find these days). The video tutorial was super helpful...I could not have completed without it.

etrailer rocks.




by:

Excellent website and customer service. It was easy to find my vehicle’s hitch components and understand the installation instructions.

Desiree and George, customer service, kept me informed took good care of me.

I’ll definitely return to etrailer in the future.




by: 05/25/2021

Everything worked as suggested on our new vw tuguan.


Comments
After a year of intermittant use it still works as expected. Very satisfied with the purchase.
Chris a - 05/26/2022


by:
2018 Volkswagen Tiguan

I bought this for our 2018 Tiguan and it works great. The instructions were well thought out and easy to follow. Included everything I needed in materials to complete the job. I would however recommend running the main power wire through the cabin instead of using zip-ties to the bottom of the car. It provides a cleaner install and there are plenty of vides to follow for this. total time it took was a few hours taking my time with routing it inside.




by:

Perfect for my car. Fairly easy to inst all.




by:
2021 Volkswagen Tiguan

Easy to use website. etrailer customer service answered my questions and responded quickly and accurated with shipping information. Happy customer...




by:

Perfect fit!




by: 03/08/2022

Clean install. Tiguan 2022




by:

Self-installed with help from the videos on the etrailer website. Still working great!




by:

Excellent from ordering made simple to shipment and arrival at my home. Packaging was outstanding!




by:

The overall fit was excellent and instructions well detailed. The only issue I had was the vehicle well nuts shifted slightly making it somewhat difficult to initially get the bolts back in. There were access holes in the frame to help realign the nuts.




by:

Excellent product, almost all plug n play. Clearly gaining access to the connections and running the primary to the battery are the biggest obstacles.
Watch the videos and read the reviews before you buy. If it sounds beyond your skillset it probably is.
For me, popping the panels proved easy. I managed to not break anything. All the provided wiring reached where it was supposed to.
I followed the advice of another review suggesting that the primary be run thru the vehicle cabin along and under the trim. Then I found an access hole in the engines firewall where other wires passed thru a rubber grommet. I actually uncurled a metal hanger, guided it thru from cabin to engine compartment, connected the provided primary wire and pulled it back thru.
My vehicle’s underbody has a full length cover/shield, which without a lift would have been awful to deal with.
Again, excellent product.




by:

Very easy to install, plug and play. I ran the wire to the battery through the interior of the car and through the firewall. A lot cleaner and pretty simple. There’s a plug in the firewall where the clutch pedal would be, made it easy




by:

plug and play! very simple installation. took no more than 45 min




by:

Seems to work as advertised. Seems to be a quality product Install was a bit of a hassle but not too bad. I recommend watching the video for the CURT wiring. Easier to follow than the fuzzy pictures and less than perfect printed instructions that came with the Tekonsha harness.




by:

Product shipped quickly, arrived on time and in great shape. Hitch was super easy to install and the etrailer.com instruction videos were clear and helpful. Very satisfied with the purchase and service from etrailer.com




by:
2021 Volkswagen Tiguan

Your company did good. Instructions leave some to be desired.




by:

Great! Works as advertised. I installed it myself, fairly easy. Great product.




by:
2020 Volkswagen Tiguan

Everything came perfectly packaged and installed relatively easy. I don’t have the equipment at home that they have in the videos on the website.




by:
2020 Volkswagen Tiguan

Best source for rv accessories, I recommend them to everyone




by:

Wiring took about 40 minutes to complete




by:
2021 Volkswagen Tiguan




by:



25
50
Show More Reviews

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



  • Help Locating Connection Points For Trailer Wiring Harness For 2020 Volkswagen Tiguan
    I am happy to assist you in finding the correct tail light connection points for your 2020 Volkswagen Tiguan Tekonsha wiring harness part # 118811. I have attached a snip from the installation instructions of the Curt wiring harness (which installs the same) that explains more thoroughly how to find the connection points. They are located in the rear cargo area of the Tiguan underneath the panel pointed out in the attached photo. There is some trim panels that need to be removed first....
    view full answer...
    Image 1 for Image 2 for
  • Is There an Alternative to Connecting a T-One Trailer Wiring Harness to 2020 VW Tiguan Battery?
    The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118811 should be connected directly to the vehicle battery. This protects your vehicle wiring and it make sure you don't end up with a blown fuse or short circuit. The module draws 7.5 amps per circuit for the tail lights and 5 amps per circuit for stop/turn lights. The battery powers the module which in turn powers the trailer lights. It keeps the module and trailer from drawing power from the vehicle turn/stop...
    view full answer...
  • Factory WIring Compatible Trailer Wiring Harness for 2020 VW Tiguan
    The Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118811 is an aftermarket wiring harness confirmed to fit your vehicle by the manufacturer. This means it has been tested physically on that model and confirmed to work as designed. It has been confirmed to fit 2018-2020 VW Tiguan as well as 2019-2020 Tiguan Limited models. It draws power directly from your vehicle battery so it doesn't compromise the factory wiring but rather just captures signal. This is...
    view full answer...
  • Where to Run Trailer Wiring Harness Power Wire on a 2018 Volkswagen Tiguan
    There is no one specific way to route a power wire from a trailer wiring harness such as # 118811 to the battery on a 2018 Volkswagen Tiguan. It all depends on how you want to route the wire. I have written a help article on this subject with tips on routing the power wire which I have linked for you.
    view full answer...
  • Can the Rear 12 Volt Cig Outlet Be Used To Install T-One Vehicle Wiring Harness On 2019 VW Tiguan
    The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # 118811 is an excellent option for a 2019 Volkswagen Tiguan. In regards to installation, the power wire must be run to the battery as specified in the installations. The rear cigarette lighter outlet cannot be used for this purpose as it does not have the proper rating.
    view full answer...
  • Can I Connect To The 12 Volt Power Supply Outlet In The Rear Storage Area Of My 2019 VW Tiguan?
    To be able to use the cigar lighter power outlet in the back of your 2019 Volkswagen Tiguan it and all the components used with it must be rated for at least 15 amps of power. If all them are rated for at least 15 amps then yes you will be able to attach the Tekonsha T-One Vehicle Wiring Harness # 118811 power supply to the outlet. Do understand that you will still want to use the inline fuse to protect the powered module. Also if the outlet only fed power when the ignition circuit is...
    view full answer...
  • Trailer Wiring Harness Recommendations for 2018 and 2012 Volkswagen Tiguan
    For the 2018 Volkswagen Tiguan we have the Tow Ready 4-way wiring harness part # 118811 which is a confirmed fit and would work well. For the 2012 you'd need to go with the # 118675 which fits the older version. The part numbers are very similar with the only difference being that the 6 and 7 are switched. I only mention that so you don't accidentally order the same harness twice.
    view full answer...
  • Recommended Trailer Wiring for 2022 Volkswagen Tiguan
    I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector, # 118811 as I prefer this brand over others when available. The T-One connector plugs directly into existing wiring providing a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights. If you need ball and ball mount, I suggest the etrailer Ball Mount Kit for 2" Hitches, # 989900. Please note the linked product review and installation video below.
    view full answer...
  • Can Trailer Hitch from 2019 Volkswagen Tiguan Be Removed and Installed on 2022 Tiguan
    The 2019 and 2022 Volkswagen Tiguan do indeed use the same hitch, however you'll want to be aware that the installation hardware is intended as a one-time use item. It's recommended that the hardware be replaced for installation on your new Tiguan. We offer replacement installation hardware as part # RHK. On the # RHK product page, in the provided field you'll want to type in the hitch part number which can be found on a sticker affixed to the hitch. From the drop down menu, choose the...
    view full answer...
  • Help Accessing Taillight Housing Connectors for Installing Trailer Wiring 2018 Volkswagen Tiguan
    I attached a picture that shows how the very similar Curt trailer wiring harness part # C56403 installs which has a better set of instructions for accessing the taillight housings than the Tekonsha kit part # 118811.
    view full answer...
    Image 1 for
  • Trim Package and Hitch Receiver Installation Questions on a 2022 Volkswagen Tiguan R-Line
    The Curt Trailer Hitch Receiver - Custom Fit - Class II - 1-1/4" item # C12177 will fit with your 2022 Volkswagen Tiguan R-Line. This hitch receiver fits all models of the Tiguan including the R-Line Black. The new R-line Black has more trim between the bumper and muffler that will need to be cut off or removed. I have attached a couple pictures of the trim that is going to need to be cut into. The hitch receiver will still sit underneath your Tiguan's Bumper. I have also attached an installation...
    view full answer...
    Image 1 for Image 2 for
  • Is Rear Bumper Reinstalled or Discarded During EcoHitch Installation on 2018 Volkswagen Tiguan
    In order to install the # 306-X7395 EcoHitch Hidden Trailer Hitch Receiver on your 2018 Volkswagen Tiguan you will need to remove the bumper fascia as well as the bumper cross member. The # 306-X7395 will replace the cross member and the bumper fascia will be reinstalled over the hitch. You will not reattach the bumper cross member. I recommend saving it should you need it for some reason at a later time. This Class III hitch has a maximum gross trailer weight of 5,000 lbs and tongue...
    view full answer...
  • Recommended Vehicle Wiring Harness For 2021 Volkswagen Tiguan
    The etrailer Trailer Hitch Receiver # e43ZR you were looking at for your 2021 Volkswagen Tiguan does NOT include a vehicle wiring harness. For a compatible vehicle wiring harness I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118811 as in our experience the Tekonsha harnesses hold up better over time, and have an overall more durable construction. Lastly to complete your towing setup you will need a ball mount so I have included a link to a helpful article...
    view full answer...
  • Will The etrailer Trailer Hitch Receiver Fit A 2021 Volkswagen Tiguan SE?
    It sure will! The etrailer Trailer Hitch Receiver # e43ZR you were looking at is confirmed to fit all models of the 2018-2021 Volkswagen Tiguan so it will fit perfectly on your 2021 Volkswagen Tiguan SE 7 Passenger. This hitch has a 525lb tongue weight rating and 3500lb trailer weight rating making it a very versatile hitch good for carrying a bike rack or cargo carrier, or for using a ball mount to tow a trailer. If you are planning on towing with your Tiguan you will also need a vehicle...
    view full answer...
  • Recommended Trailer Wiring Harness For A 2021 Volkswagen Tiguan
    Yes, the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118811 is a confirmed fit for your 2022 Volkswagen Tiguan. This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located in the rear cargo area. You will have to remove the plastic threshold cover, side panels, and cargo trays to access this harness. Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then...
    view full answer...
  • Does the Curt C13381 Hitch Fit the 2022 Volkswagen Tiguan
    Yes, the Curt Trailer Hitch Receiver # C13381 is confirmed to fit all models of the 2022 Volkswagen Tiguan. This hitch is made in the USA, has a bolt-on, no-drill installation and will provide you with a 2" receiver opening which is the most common size used for hitch mounted accessories such as bike racks, cargo carriers and ball mounts. If you are planning to tow a trailer with this hitch on your Tiguan you can round out a tow package by picking up the T-One Vehicle Wiring Harness #...
    view full answer...
  • Feeding T-One Vehicle Wiring Harness Through Floor Pan and Mounting to Hitch
    You have the Class III Draw-Tite Max-Frame Trailer Hitch Receiver, 76192 on your 2018 Volkswagen Tiguan, this has an integrated mounting point for a 4-pole flat trailer connector. I suggest the Brophy bracket, # BK4F. Simply install the T-One Vehicle Wiring Harness, # 118811 per included instructions and then put the 4-way flat plug through an existing opening in the floor pan of your Tiguan. There will be multiple holes in the pan with grommets, plugs. Pull one of these and feed the...
    view full answer...
  • Trailer Hitch and Wiring that Fits 2021 Volkswagen Tiguan
    We have an etrailer hitch that is a confirmed fit for your 2021 Volkswagen Tiguan with the part # e43ZR which is also mostly hidden. Then for trailer wiring you'd want the Tekonsha kit part # 118811 and you'd be set. This is the easiest to install and most reliable option for your vehicle. 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 rise or 4...
    view full answer...
  • 7-Way Trailer Wiring for 2018 Volkswagen Tiguan
    To add a 7-way to your 2018 Volkswagen Tiguan you need to add a 4-way connector # 118811 and after adding a 4-way you can convert it to a 7-way with # ETBC7 which is a universal 7-way wiring kit. The 7-way has to have the 4-way to work. I have attached an install video to help you through the installation process. I also recommend picking up a brake controller since you're already going to be doing a lot of wiring it is going to make life a lot easier down the road. Tekonsha # 39510 and...
    view full answer...
  • Will Draw-Tite Trailer Hitch Receiver Interfere With Auto Lift Gate Sensor On 2021 Volkswagen Tiguan
    You are correct that the etrailer Trailer Hitch Receiver # e43ZR is a confirmed fit for your 2021 Volkswagen Tiguan. I reached out to Draw-Tite directly and my contact mentioned that they have not heard of any issues from customers who installed the Draw-Tite # e43ZR. With the hitch installed you may have to move your foot to either side of the receiver to find the sweet spot and get your liftgate to work and just remember where that location is, but after doing it a few times it will...
    view full answer...
  • Do I Need To Modify My 2018 VW Tiguan To Fit The Curt Trailer Hitch Receiver # C13381?
    The Curt Trailer Hitch Receiver # C13381 will fit your 2018 Volkswagen Tiguan with no modification unless your Tiguan has excess sealant in the areas where the hitch will mount. The receiver will bolt on to existing weld nuts that are in the frame of most Tiguan's. If your model does not have the factory hardware for the receiver the kit includes the necessary hardware to install on your Tiguan. I recommend the Tekonsha T-One Vehicle Wiring Harness # 118811 to allow for you to haul a...
    view full answer...
  • Does the Curt Hitch # C13381 Fit My 2021 Volkswagen Tiguan?
    Yes, the Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # C13381 is confirmed to fit all models of 2021 Volkswagen Tiguan. If you are looking for a wiring harness for transporting a small trailer, I recommend the T-One Harness # 118811. This will provide your Tiguan with brakelight/running light/turn signal capabilities. For a ball mount, I recommend the Curt Towing Starter Kit for 2" Hitches - 2" Ball - 2" Rise, 4" Drop # C45554.
    view full answer...
  • Best Hitch Receiver for a 2022 Volkswagen Tiguan
    I have a great hitch receiver for your 2022 Volkswagen Tiguan. It is the Curt Trailer Hitch Receiver item # C13381. This hitch receiver fits all models of the 2022 Tiguan. It is a custom fit bolt on installation. It has a hidden crosstube meaning that once installed only the receiver itself will be visible. The 2" receiver allows for use of the most accessories and offers a 3,500 lbs towing capacity and a 525 lbs maximum tongue weight. You will want to verify with your owners manual or...
    view full answer...
  • Custom Fit Hitch Receiver for a 2018 Volkswagen Tiguan SE
    Yes, the Curt Trailer Hitch Receiver item # C13381 is confirmed to fit a 2018 Volkswagen Tiguan SE. This is a custom fit hitch that bolts to your VW with included hardware. I have linked an installation video. If you need a wiring harness to control you trailer or accessory's lights you will want the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector item # 118811. This custom-fit T-One connector plugs into your VW's wiring harness, which is located in the rear cargo...
    view full answer...


< Previous
12



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




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality custom fit vehicle wiring for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate custom fit vehicle wiring information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jacob T
Video Edited:
Jacob T
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Written by:
Alexander C
Employee Shane H
Test Fit:
Shane H
Employee Bradley B
Test Fit:
Bradley B
Employee Robert O
Video by:
Robert O

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 1-833-496-1390