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

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

Item # 118646

lowest price pledge

Retail:$98.73

Our Price: $70.04

You Save: 29%
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: 1.7 lbs

Quantity: 
In Stock, Ships Today
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector Custom Fit 118646
zoom in icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
Please enter a valid email address.

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.

pop out icon replay 360 icon
horizontal rotate icon

Product Images

In Use/Installed


  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • Tekonsha
  • Powered Converter
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. Call 800-298-8924 to order Tekonsha custom fit vehicle wiring part number 118646 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 (36)
  • Q & A (39)
  • Videos (2)
  • Photos
  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118646

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 power converter to ensure that your vehicle's wiring matches that of your trailer
    • Powered module connects 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: 4.2 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 your rear cargo area on both the driver's side and the passenger's side. You will need to remove the threshold, floor panels, cargo trays, and interior trim panels to access the 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 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.



118646 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite



118646 Installation InstructionsInstallation Details 118646 Installation instructions

This Product Fits The Following Vehicles

2012 - 2015 Volkswagen Passat

2014 - 2015 Volkswagen Passat 1.8L Turbo models

2012 - 2015 Volkswagen Passat 2.0L TDI and 3.6L models

2012 - 2013 Volkswagen Passat 2.5L models

2018 - 2019 Volkswagen Golf excluding GTI and R models

2015 - 2019 Volkswagen Golf excluding GTI and R models

2015 - 2017 Volkswagen Golf excluding R models



California residents: click here


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


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Tekonsha T-One Vehicle Wiring Harness Installation - 2015 Volkswagen Passat

Speaker 1: Today on our 2015 Volkswagen Passat, we're going to be taking a look at it and showing you how to install Tekonsha T1 vehicle wiring harness, with four pull, flat trailer connector, part #118646.Now this four pole is going to give you all the necessary lighting for your basic trailer setup. Your wires are marked and they're going to tell you which wire does what. This is what our wiring harness looks like when it's installed. You can see it's going to live inside the vehicle.When you want to use it, simply unroll is, you're going to lay it over the top of this rubber piece here. You want to stay away from any connection points. We'll close the trunk lid, and you can see you have plenty of wire to use as needed.

When it's not in use, roll it up and you can stow it away in a side compartment.First thing we need to do to begin our installation, we need to get inside our trunk. We need to remove our panels. We're going to start with our floor coverings. We'll just set them aside. We're going to remove this sill panel here.

We're just going to pull up on it to release the clip, and we'll set it aside.Next we're going to take a #3 hex bit, we're going to take out these two fasteners, then you're going to have two on the passenger side also. Next, we're going to remove this foam piece. You're going to have another fastener here, and the same thing on the passenger side. We're going to take out this one, and you're going to do the same thing on the passenger side.Next, we can start slowly removing our panel out of the way. From here, what we're going to do is we're going to take our yellow wire, we're going to unplug the wire from out taillight.

We're going to plug one end into the wiring harness, the other end back into the taillight.Next we're going to run our green wire over to our passenger side. Remove your taillight, one side, other side back into your taillight. Now from here you can go ahead put this panel back in into place.Next, we're going to mount our modular box. Once we find a location, we're going to take some rubbing alcohol, we're just going to wipe down that spot to make sure we have a good, clean area, to that our double-sided tape will stick and hold the box in place. Once you apply your double-sided tape, go ahead and press it into place firmly, peel off your other side, mount it in your place that you picked.

And again, push it firmly into place.Next, we'll go ahead and find a good place for our ground. We're going to be using a 1/4" socket and self-tapping screw that comes in the kit. Make sure it's got a good firm hold. Next what I'm going to do for my power wire is I have an existing grommet back here that the wires are running through. I'm just going to put a little hole in it, so I can run my wire through.What I did, was I took some airline tube and I ran it through the hole, and I ran it down through the bottom of the car. Rather than taking the whole bundle of wire that I'm going to be running to the front of the vehicle and pushing it through the hole, I ran airline tube through. Now I'm going to go down, underneath the car, find the other end of the airline tube, hook my wire to it and pull it back through so all's I have is a necessary amount to hook up.As you can see, my airline tube came right out the bottom corner of the car. Just going to take the one end of the wire, feed it into the airline tube. You can run some electrical tape around there to hold it if you'd like. We'll come back up to the top, pull our airline tube back out till our wire comes out. And then replace your grommet. Now we can hook up to our power wire that's running to our modular box.Next thing I'm going to do is I'm going to take a butt connector and connect it onto the end of my power wire that's coming out of my modular box, your other wire you've got coming out from the bottom of the vehicle. We're going to strip a little bit off the ends and we're going to hook it into the other end of our butt connector. Go ahead and crimp it down, make sure you got a good hold. I like to run some electrical tape around that connection for a little extra protection, and also just to help hold it in place.Next, we can take our excess, go ahead and push it back through into the hole. We'll go ahead and pull our green wire across, tighten it up and any other remaining wire. We're going to go ahead and zip tie them together. Now we can go ahead and put our side panel back in. Make sure you get this rubber seal over the top of your panel here. Once you've got your panels back in place you can go ahead and put your fasteners back into place also.We can put our kick panel back in place. And we want to make sure that we take our rubber trim here and pull it over the top of this. Now we can replace our foam covering. And then we can go ahead and put our floor covering back in.So now that we're down here under the car, we're going to run our power wire to the front of the vehicle. One thing I do suggest doing, is figuring out which side of your car you battery is on. That way you run it on the right side of the car. If you run it on the wrong side of the car, and you figure out when you get up there that the battery is on the opposite side, you may not have enough wire. So make sure you check that first, whether your battery is on the driver side or passenger side.I'll go ahead and route my wire up to my battery. Give me a few minutes, let me do that and I'll show you how I did it. What I did is I ran the wire back down the heat shield, right here, went over the top. Now because of all these moving parts and the exhaust pipe, I want to try to stay away from the exhaust pipe and any of the moving parts that are down here.So what I did was I found a spot right here and I zip tied it to the top of this frame. Ran it over the heat shield to right here, zip tied. Took a 10mm socket undid these nuts here and followed these existing line from the factory. I just threw a couple zip ties in here just to hold the wire up.From the top, I ran an airline tube down, gives me a path up to my battery. Hooked the line into the bottom of the airline tube, taped it up. Now we can go up top and pull our line up. We'll just slowly pull our airline tube up, till we get our wire.Next thing we're going to do is we're going to take the fuse holder, we're going to cut it in half. We're going to take both sides of the fuse holder, we'll go ahead and strip them back. On one side, we're going to put the yellow butt connector provided in your kit, crimp it down. Make sure you have a good hold. On the other side, we're going to put a ring terminal, crimp it down. Make sure you have a good hold. I'm going to go ahead and take some electrical tape and go around this ring terminal where it's connected onto my wire. Now we can set that aside.Now we're going to take our power wire. We're going to cut off what we need here. Go ahead and strip it. Then we're going to take the other end of our fuse holder, crimp down. Make sure you have a good connection. And again, we'll take some electrical tape.So now right here in our fuse panel. You can see our red battery cable that's running to our positive side of our battery. We're going to take this nut off using a 10mm socket. Put your ring terminal in. Once you have all your connections made, you can go ahead and put in your fuse. You want to make sure that you don't put in your fuse before you hook up your wiring, 'cause you don't want to short out your system.Now we'll go ahead and test it out, using part #I26. Brake lights. Left blinker. Right blinker. Running lights. That'll do it for the Tekonsha T1 vehicle wiring harness with four pull flat trailer connector, part #118646 on our 2015 Volkswagen Passat.


Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118646

Average Customer Rating:  4.8 out of 5 stars   (36 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.

- 118646
by:

I want to thank my etrailer customer service contact, Ashley E for helping me finish my wiring project. When I began preparing to install wiring harness when I realized I had ordered the incorrect part number. I called etrailer Customer service and Ashley promptly reviewed my order and identified the appropriate harness for my vehicle. She generated an order for the correct product and arranged for the return of my incorrect product. I was surprised and delighted to find that the new product arrived 3 days later. The correct harness is a custom product that is connected with coupling connector that plugs in between the tail light wires and the light. All I had to do is route the power wire to the battery. It works perfectly! Thanks Ashley and etrailer for a great experience. Jamie S 370191



- 118646
by:
2017 Volkswagen Golf

I installed this harness on my 2017 Golf GTI. All tee connections fit the OEM sockets perfectly. The location I chose to mount the module required me to extend the left socket wiring (yellow wire). No big deal. There is a rubber body plug on the floorpan on the drivers side rear corner that can be used to exit the 12 volt battery wire from the rear compartment. I ran the battery wire externally underneath the chassis attaching to the brake lines using zip ties. I removed the underbody splash shield on the drivers side to access the brake lines and then reinstalled afterwards. Removing and installing the rear trim panels to gain access to run the module wires from left to right took the most time. I am very detailed oriented and I spent what time was necessary to end up with a superb installation. 403378


Comments

After one year everything is working perfectly!

Gary R - 07/09/2018

40696

- 118646
by:
2013 Volkswagen Passat

I installed this wiring kit with the help of one other person on my 2013 VW Passat. Connecting everything in the trunk area was extremely simple due to the T-connections. Running the power supply line to the battery took the most time to ensure proper routing, but it was fairly simple. Removing protective plastic shields exposed many lines to zip tie the wire onto and ultimately made the install safe for the long term. 484373



- 118646
by:
Volkswagen Passat

I bought this to go with the hitch I purchased for a VW Passat. This fit perfectly and has been very durable. I would recommend it for anyone looking for this size hitch. 698662



- 118646
by:
2015 Volkswagen Golf

Installation was straightforward and the product has worked exactly as expected for the last year in our 2015 VW Golf TDi. Thanks! 647155



- 118646
by:

Excellent fit, no issues with connectivity, works as advertised! 635047



- 118646
by:

Super easy to install. 604861



- 118646
by:

Love the ease of installation and quality materials used on product. 576096



- 118646
by:

Wiring a car to tow is nothing like the old days. I ordered the custom harness, arrived very soon, installed per the instructions and video, now my trailer is all nice and legal. I don’t have a truck, economy and long commute prohibit that, when I need one, I hook the trailer instead, E-Trailer has always had my towing solutions. 573076



- 118646
by:

Absolutely a simple installation, worked perfect. Amazing service i received from Ray. In a bind and need it asap, was able to get it out overnight and got just in time to make my trip happen. Thanks again, I will recommend to everyone!! Jason 568632



- 118646
by:
2015 Volkswagen Passat

Original wiring harness had a problem and did not power running lights when installed per instructions. etrailer customer service was great to work with and got a replacement product out to me promptly. All my lights are now working. Installation video clearly show how to install product and is a great time saver. 562231



- 118646
by:
2014 Volkswagen Passat

have for a year and it still works fine :) 545580



- 118646
by:
2015 Volkswagen Passat

Already installed it and works perfect. Everything was as it should be. 491201



- 118646
by:
2016 Volkswagen Golf

Wow what an easy plug-and-play process. I only had to remove a few grommet tabs. 489942



- 118646
by:
2013 Volkswagen Passat

It was quite easy to install. 489060



- 118646
by:

I just received it yesterday and hope to install it this weekend. 485820



- 118646
by:

Great product, instructional video grea t.. 478097



- 118646
by:
Volkswagen Passat

Wiring was fairly easy to install. Directions were easy, this was better than cutting and splicing into factory harness. The passat has a plastic skid plate that comes off and makes for easy wire runs. overall im happy with the hitch and the wiring 461357



- 118646
by:

great product. great fitment 448387



- 118646
by:
2014 Volkswagen Passat

Worked great om 2014 VW passat 443145



- 118646
by:

I had no problems installing the trailer hitch it was like a breath of fresh air.wiring it up was very easy and I must say the connectors was an easy way to connect to the existing wiring. 435543



- 118646
by:

Installed it myself. Yes I hung the black box instead of fixed mount. Works just fine. 431174


Comments

doing just fine

Alice F - 09/11/2018

43463

- 118646
by:
2014 Volkswagen Passat

Install was super easy and pretty quick overall. Very happy. 429226



- 118646
by:

Plug and play, what could be easier. Excellent install videos by etrailer, keep up the great work. 2nd install of wiring purchased through etrailer. 414781



- 118646
by:
2017 Volkswagen Golf

I can't write a product review as I never used it. It took over 30 days for etrailer to ship it (with paid economy shipping option). 396647



- 118646
by:

Produce came in 2 days and looks like it will be easy to install. Hopefully I will install it this week. 391953



- 118646
by:
2015 Volkswagen Passat

The wiring connections were great, running the the + lead from battery to the module in the truck of the Passat was an exercise in ingenuity. But got it done today. Don't have access to a lift so routing into the cabin of the car was toughest part. 390775



- 118646
by:
2014 Volkswagen Passat

RECEIVED YHE WIRING HARNESS IN PERFECT CONDITION. THE INSTALL WAS FLAWLESS. TOTAL TIME OF INSTALL WAS APPROXIMATELY 35 MINUTES AND I DIDN'T RUSH MYSELF. RUNNING THE POWER LINE FROM THE MODULE TO THE BATTERY WAS A BREEZE, THE HARDEST PART WAS JACKING UP THE ONE SIDE OF THE CAR TO ROUTE THE WINE. PRODUCT WORKS PERFECT AND EVERYTHIG FIT PERFECT. YOU CAN'T GO WRONG BUYING ETRAILER PARTS. 373933



- 118646
by:

Hitch and wiring are working flawlessly. Best decision I made adding a hitch to my car to carry items that would not fit inside. 358827


Comments

Everything is still working very well and I am very pleased with my purchase.

Cliff B - 03/26/2018

36491

- 118646
by:
2015 Volkswagen Golf

Wiring harness and trailer hitch for my VW Golf fit fine, no monkeying around. It took an afternoon to work through the process of installing the parts, but there were no significant snags in getting it done. Reviewing the instructions and available videos before hand were helpful. 358295



- 118646
by:
2016 Volkswagen Golf

Easy product to install. Great service and especially great price. 318373



- 118646
by:

The Video was very helpful in installation sequencing and vehicle positioning. 297620



- 118646
by:

No worries working very well .. Thank You 271907



- 118646
by:
2015 Volkswagen Golf

Outstanding Fit. 2015 TDI Golf. Cleared exhaust perfectly. Online directions very clear. Don't know how it could have been made any easier. Took about 30 min to install by myself. I did use a jack to hold in place while I spun the nuts on. Appears well made, probably overbuilt for application but I like that. 271822



- 118646
by:
2015 Volkswagen Golf

Hitch and electric kit both shipped as promised. Installation was a breeze and looks like a good long lasting product. Thanks Etrailer! 257929



- 118646
by:
2015 Volkswagen Golf

Installed on my VW Golf TDI with no problems. Blinker connections fit like OEM connections and there is plenty of cable to route how you prefer. Third installation using E-Trailer wiring harnesses and all have been solid products. 246172


36
36

Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

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


  • Choosing Hitch Installation on 2014 VW Jetta Sportwagen TDI and 2015 Volkswagen Passat 2.0L TDI
  • In a light-duty towing application like yours, to be perfectly honest, if it were my money I would choose the lowest cost hitch for whichever car you choose to equip with a hitch. All have identical capacities. For the 2014 VW Jetta Sportwagen TDI we have two compatible hitches, the Draw-Tite 1-1/4-inch Class I Sportframe Trailer Hitch # 24866 which will install on the Jetta's frame, and the 2-inch EcoHitch # 306-X7284 which does install at the bumper mounts. Both are shown on the linked...
    view full answer...

  • What is the Correct Tekonsha Wiring Harness for a 2015 Volkswagen Golf SportWagen
  • I took a look at the answer pages that you were referring to and you are correct that the T-One # 118646 was recommended. It is no longer a fit for the 2015 Volkswagen Golf SportWagen and those questions were completed before a statement came from Tekonsha stating that it won't fit the 2015. I have sent an update for those answer pages to change, thank you for helping us out with that. The T-One # 118730 that you mentioned is a fit for all models of the 2016 Volkswagen SportWagen and...
    view full answer...

  • Parts Needed To Tow a Trailer or Haul a Cargo Carrier with a 2015 Volkswagen Golf TDI
  • The easiest to install trailer hitch we have for your 2015 Volkswagen Golf TDI is the Curt Trailer Hitch Receiver part # C11412. The reason that this trailer hitch is the easiest to install is because you don't have to take off any part of the rear bumper fascia like you would have to for the other options available for your Golf. I have attached an install photo and video for you as well. The Curt Trailer Hitch Receiver has a class I rating with a 1-1/4" receiver tube opening. Therefore,...
    view full answer...

  • Best Trailer Hitch for 2018 VW Golf
  • The best trailer hitch for your 2018 VW Golf is the Curt # C11412 because it does not require any trimming of the rear fascia on your vehicle unlike the Draw-Tite # 24925 hitch which does require it. The Curt hitch does have a more visible crosstube than the Draw-Tite but not having to cut off part of your vehicle's trim is a worthwhile trade-off. To add wiring which will give you a 4-way connector and allow you to power your trailer's lights you need Wiring Harness # 118646 unless your...
    view full answer...

  • Trailer Wiring Harness Options for a 2014 Volkswagen Golf
  • The ZCI harness # 119250KIT is one of the wiring harnesses that you can use on the 2014 Volkswagen Golf. It is the only one that does not require splicing into the wiring on the vehicle. There are other options, # 119190KIT and # C59236, and both of these require splicing into the vehicle wiring.
    view full answer...

  • Advantage to Curt Hitch with Euro Ball Mount for 2016 Volkswagen Golf
  • I like the Euro ball mounts like what come with the part # C114121 as they are just a simpler design that doesn't require you to install a ball onto the ball mount. It's permanently fixed there so it is always ready to go. Also it's a bit less bulky so it stores a bit easier. This is a fit for your 2016 Volkswagen Golf so if you need a hitch and a ball mount that has a 1-7/8 inch ball this would be the part number you would need. For trailer wiring you then would want the # 118646...
    view full answer...

  • Trailer Wiring Harness for a 2016 Volkswagen Golf R
  • There are no specific wiring harnesses for the R model of the 2016 Volkswagen Golf. Your best option is to use the ZCI harness # 119250KIT which is a universal harness but does not require splicing into the vehicle wiring.
    view full answer...

  • Will Curt Trailer Hitch Fit a 2015 Volkswagen Golf TSI
  • Like you said, another customer installed Curt trailer hitch # C11412 on a 2015 VW Golf TSI as shown in the picture they submitted which I have also included here. The pictures that appear with the comment go with the comment that is above the pictures, not the one below the pictures so that is probably where the confusion is. Regardless the proof is in the pudding and it does fit the TSI. There is no drilling, trimming or cutting involved in the installation. I have included a link...
    view full answer...

  • Trailer Wiring Harness for 2015 Volkswagen Golf GTI
  • For your 2015 VW Golf GTI, you'd want to use the Tow Ready # 119190KIT trailer wiring harness. The # 118646 harness you asked about is compatible with the 2015 VW Golf with the exception of GTI and Sportwagen models.
    view full answer...

  • Trailer Hitch and Wiring Harness Fits for 2015 Volkswagen Golf Sportwagen TDI
  • We offer a 1-1/4-inch light-duty Class I hitch for your 2015 Volkswagen Golf Sportwagen TDI (as long as it is not the R version), part # C11411 from Curt. Since your intended application is towing all you'll need to add is a ball mount # C45520 and a hitch ball, either 1-7/8-inch # C40001 or 2-inch # C40018. Two helpful hitch installation articles are included for you. In addition to basic hand tools you will need a torque wrench like # ALL944001 to install the hitch to the manufacturer's...
    view full answer...

  • Trailer Hitch and Wiring for a 2015 Volkswagen Golf TDI
  • We do have a trailer hitch that will fit your 2015 Volkswagen Golf TDI. You can use Draw-Tite trailer hitch # 24925. This is a Class I trailer hitch rated for 2,000 pounds gross trailer weight. It does not fit R models. If you plan on doing some towing the correct ball mount to use is # 3593. For a 1-7/8 inch ball use # 19256 and for a 2 inch ball use # 19258. And for trailer wiring use # 118646. If you want to use the hitch for an accessory such as a bike rack or cargo carrier then...
    view full answer...

  • Trailer Wiring Recommendation for 2013 Volkswagen Passat
  • For trailer wiring confirmed as a custom fit for your 2013 Volkswagen Passat the Tekonsha Kit part # 118646 would be your best option. The # 119190KIT is a hardwire kit that requires you to test circuits of your vehicle's taillights and then splice the harness to the vehicle. The part # 118646 plugs in line with the taillight connectors of your vehicle and does not require any hardwiring.
    view full answer...

  • Custom Fit Wiring Harness Kit 118730 for 2017 Volkswagen Golf SportWagen
  • The custom-fit plastic connectors on wiring harnesses like # 118646 (which fits the 2013 Volkswagen Passat) and # 118730 (which fits the 2017 Volkswagen Golf SportWagen) are not offered as separate parts, sorry to say. Since your existing wiring harness kit # 119190KIT is a hardwired type I understand why you'd prefer not to have to cut into the new vehicle's wiring, but for that you'll need kit # 118730 for the SportWagen.
    view full answer...

  • Trailer Wiring Recommendation for 2018 Volkswagen Golf
  • For your 2018 Volkswagen Golf the best trailer wiring option we have is the T-One kit part # 118646 for the non-R models or part # 118787 for if you do have the R model. The T-One brand of trailer wiring harnesses is our most reliable option we offer so we recommend it the highest.
    view full answer...

  • Hitch Recommendation and Comparison for a 2015 Volkswagen Golf Sportwagen Diesel TDI
  • We have the Curt Hitch part # C11411. Curt recommends the use of a stabilizer strap like part # 18050 when carrying a non-supported load like a bike rack. The most popular bike rack we carry that has been confirmed to fit this vehicle is the Swagman XTC2 Bike Rack part # S64670. This rack has a ton of positive reviews from our customers who have tried it. Check out the review video I attached for more info. For a ball mount you would want the part # C45520, 1-7/8 inch ball # 19256,...
    view full answer...

  • Recommended Wiring Harness with 4-Way Flat for a 2012 Volkswagen Passat
  • The Upgraded Modulite Vehicle Wiring Harness Kit # 119147KIT that you referenced is a universal kit so technically it will fit all vehicles. However, since we have the Tekonsha T-One # 118646 at a similar price that is a custom fit for your 2012 Volkswagen Passat there is no need to use a universal item. The universal option requires hardwiring everything while the T-One clips in behind your tail lights and then a 12V power lead is run to the battery. This is a much easier install. I...
    view full answer...

  • Recommended Trailer Hitch Receiver For 2014 VW Passat 1.8L Turbro Wolfsburg Edition
  • For your 2014 Volkswagen Passat 1.8L Turbo Wolfsburg, I recommend the Draw-Tite Sportframe Trailer Hitch Receiver - Custom Fit - Class I - 1-1/4" # 24880. This is a bolt on installation hitch with a sturdy square tube design. The Draw-Tite Class I hitches do not require a stabilization strap like the Curt hitches do for accesories. If you will be doing light towing with this hitch or want a lighted accessory, I recommend the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer...
    view full answer...

  • T-One Wiring Harness for 2018 VW Golf TSI
  • There is T-One Wiring Harness available for your 2018 VW Golf that does not require splicing, the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118646. You can plug in the T-connectors and then only need to run a hot lead to your VW's battery and you'll be set.
    view full answer...

  • Trailer Wiring Harness Recommendation for the 2016 Volkswagen Golf SportWagen
  • For your 2016 Volkswagen Golf SportWagen I recommend the Tow Ready ZCI harness # 119250KIT. This harness is unique in that it does not require splicing into the vehicle wiring. Instead, its connectors clamp around the vehicle wires and sense the electricity passing through them. It's kind of awesome!
    view full answer...

  • Recommended Trailer Hitch Receiver For 2016 VW Golf
  • For your 2016 VW Golf, I recommend the Curt Trailer Hitch Receiver - Custom Fit - Class I - 1-1/4" # C11412 which is confirmed to fit all 2016 Golf models except the GTI and R models. This hitch has a round tube design and is black gloss powder coated for rust resistance. If you will be using this hitch receiver for accessories like a bike rack or cargo carrier, you will also need the Curt Stabilization Strap # 18050. If you will be using this hitch receiver for towing, I recommend...
    view full answer...

  • Trailer Lights Not Lighting or Lighting when Not Supposed to with 2015 VW Golf SportWagen
  • To determine if the problem is on the vehicle side or the trailer side you can do some testing with a circuit tester such as # 40376 or a meter if you have one. Disconnect the trailer and use the circuit tester to test the 4-Way connector on your 2015 Volkswagen Golf SportWagen while someone sits in the car and goes through the light functions. The pin next to ground is running lights, the next pin is left turn signal and brake lights, and the last pin is right turn signal and brake...
    view full answer...

  • Trailer Wiring Harness Recommendation for a 2016 Volkswagen Golf
  • If it were my 2016 Volkswagen Golf I would install the Tekonsha harness # 118646. I would choose the Tekonsha harness because we have heard of less issues with these wiring harnesses. They install the same way and perform the same functions with little difference other than the design of the circuit boards and amperage ratings like you pointed out. I have included a link to the instructions for you.
    view full answer...

  • Trailer Hitch Recommendation for a 2015 Volkswagen Passat Sport
  • For a trailer hitch confirmed to fit your 2015 Volkswagen Passat you would want the Draw-Tite part # 24880. I attached an install video for this hitch for you to check out as well. If you were planning on towing a small trailer, you might lean toward the Curt hitch, as the draw bar and pin and clip are included. You might also need the following to complete your towing system. Trailer wiring harness # 118646 2 inch trailer ball # 19258 1-7/8 inch trailer ball # 19256
    view full answer...

  • Trailer Wiring Troubleshooting on 2015 Golf SportWagen
  • Use your circuit tester on the Right Turn input from the vehicle wiring harness before it reached the taillight converter. Activate the right turn signal, you should see power on the green wire. Then, check the green wire on the output side of the converter, that leads to the 4 pole trailer connector. If you have power entering the converter, but not leaving it, the converter is bad. If there's no power entering the converter, then check the T connection where the harness plugs in to the...
    view full answer...

  • Hitch and Trailer Wiring Recommendation for a 2015 Volkswagen Golf SportWagen
  • For your 2015 VW Golf Sportwagen the only option is the Curt part # C11411. The 60362 that you referenced does NOT fit the SportWagen models so I cannot recommend it for you. For a ball mount you would want the part # C45520, for a 1-7/8 inch ball part # 19256 and for a 2 inch ball # 19258. For trailer wiring the harness part # 119250KIT is the correct harness to use. The others you mentioned are not confirmed as fits.
    view full answer...

  • 4-Pole Trailer Wiring Harnesses for 2015 Volkswagen Golf and 2015 Volkswagen GTI
  • The 2015 Volkswagen Golf and the 2015 GTI do call for different wiring harnesses. Tow-Ready 4-pole # 118646 is a custom-fit powered harness that plugs in at the tail lights of the 2015 Volkswagen Golf using vehicle-specific connectors. For the 2015 GTI only universal-fit harnesses are available, Tow-Ready # 119190KIT and Curt # C59236, both of which are hardwire installs. These do not have the connectors to match the car. Both of these will require splicing of wires and you'll need...
    view full answer...

  • Can Trailer Hitch be Installed on 2019 Volkswagen Golf TSI
  • What you are referring to is actually pretty common when it comes to smaller vehicles. It isn't surprising to see that UK versions are given the thumbs up to tow while US versions are discouraged from towing and I'm not sure what the reason is. I will say that quite a few people do still get trailer hitches installed on their Volkswagen Golf and are just fine. I can't really go against what your owner's manual says but if you do decide to install a trailer hitch the Curt Class I part #...
    view full answer...

  • Does Trailer Wiring Harness for 2016 Volkswagen Golf Draw Constant Power
  • Unless there is something plugged into the 4-Way trailer connector that is drawing power trailer wiring harness # 118646 for your 2016 Volkswagen Golf will not be drawing any power from the vehicle battery. Think of it like a 12 volt power outlet (cigarette lighter) in a vehicle or a wall outlet. It has power to it all the time (some of them do anyway) but they don't draw any power until something is plugged in and turned on. So in terms of current (amps) there isn't a draw though it will...
    view full answer...

  • Troubleshooting Intermittent Trailer Light Functioning on a 2001 Kia Sportage
  • Bizarre tail light behavior on a trailer is almost always due to a bad ground. I would recommend you check the ground you used for the tail light harness and make sure it is connected to a clean metal surface. You might even try a totally different location for the ground. You could even try running the wire up to the negative side of the battery just to rule out the possibility. If that does not fix it I would try uninstalling the trailer wiring harness and reinstalling it. There may...
    view full answer...

  • Recommended Trailer Hitch Receiver for 2017 VW Golf Wolfsburg Edition
  • For your 2017 VW Golf Wolfsburg Edition, I recommend the Draw-Tite Sportframe Trailer Hitch Receiver - Custom Fit - Class I - 1-1/4" # 24925. If you will be doing some light towing with this hitch receiver, I recommend the ball mount # 3593 along with hitch ball # 19256 for a 1-7/8 inch diameter ball or # 19258 for a 2 inch diameter ball. For trailer wiring, I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118646. This custom-fit T-One connector plugs...
    view full answer...


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

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

Info for this part was:

Expert Research:
Michael L
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Expert Research:
Jeffrey L
Edited by:
Lindsey S
Video Edited:
Jacob T
Video by:
Kathleen M
Updated by:
Laura H
Updated by:
Sarah W
Updated by:
Alexander C
Updated by:
Isabelle B
Installed by:
Cole B
Written by:
Alexander C
Test Fit:
Shane H

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.