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

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

Item # 118480
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Our Price: $65.11
Custom Fit Vehicle Wiring

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118480 - 4 Flat Tekonsha Custom Fit Vehicle Wiring
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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 118480 or order online at 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.
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  • Reviews (424)
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  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118480

  • 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.


  • 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 trunk
    • 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


  • Maximum amperage:
    • Stop/turn lights: 2.1 amps per circuit
    • Tail lights: 5.6 amps per circuit
  • 1-Year limited warranty


This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located inside your trunk, behind the tail lights on both the driver's side and passenger's side. You will need to remove some interior trim or carpeting 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 within your trunk.

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 most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your vehicle's three-wire system need to be combined so they are 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.

118480 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite

Installation Details 118480 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 - 118480

Average Customer Rating:  4.9 out of 5 stars   (424 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.

2016 Nissan Rogue

I installed the T-One Vehicle Wiring Harness on my 2016 Nissan Rogue. The eTrailer online videos covering the installation was great. Everything worked out according to the online video. The biggest challenge was running the cable to the battery. Everything works using the 4-pole flat trailer connector tester. Thanks for a great product that is easy to install.

2009 Nissan Rogue

Thank you! Not only did the hitch I ordered arrive sooner than expected, it was super easy to about 30-40 minutes. The wiring harness took a bit longer, but thanks to the "how-to" video, we got it installed perfectly, didn't break anything...and it works!! We did the complete install in our driveway, without any jacks. Luckily, I fit under the car with more ease than my husband and was able to thread the wiring just like the video showed. By the way, I'm a 64 year-old grandmother and if I can do this, anyone can. The hitch looks great and we are extremely happy with the entire process, from ordering to install. Thanks John, we will definitely recommend you and your product.

Hitch and wiring harness install went well everything works - videos were very helpful - BE SURE TO: clean holes opposite the tow hook thoroghly w oil
-- comment by: Mike D - 11/14/2013

2019 Nissan Rogue

Vehicle came apart exactly as video demonstrated. Unsnapping connectors also as video showed. The only thing I did different from video is I did not run power wire to the battery, I have a twelve volt outlet in the rear side panel on the passenger side and I ran the power line off of that. I used the tester I purchased at etrailer and the system checked out fine.


Everything fit as described. The only hard part was feeding the wiring thru to the battery. But the video instruction could not have easier.

2020 Nissan Rogue

Awesome transaction. Good value and fast delivery. Easy instructions on wiring the harness a d installing the hitch.


It was easy to install thanks to the [online] video, which is also how I learned about this harness as they mentioned the part number


I ordered the kit for a 2021 Nissan Rogue but really needed the not yet available 2022 kit. The connectors are different. I adapted the 2021 kit via cut and splice. I could have ordered a universal kit to accomplish the same outcome. Nissan failed to come up with a connector kit for the 2022. Fishing season approached last year and my spouse wanted to pull her modification of the 2021 kit.

2018 Nissan Rogue

Item came in today and exactly as described. Will update after installation. The product went out for shipping fast. I would highly recommend paying extra for shipping on small products. Has usps do it and took a week and a half to get to me. I don’t know who etrailer uses because when I ordered my trailer hitch, it got here in a few days.


Loved it simple and easy to install videos on your website help alot to everything worked great.

2010 Nissan Rogue

Was able to find what I needed for my particular vehicle and was able to install with the help of the installation video.

Im very satisfied with the product.It was easy to install and is working heat.
Robert B - 05/03/2022


As a former [moving company] hitch installer I always recommend people to get the quick connect wiring for ther car because of their ease of installation and maintenance. No wires to splice witch also means no damage to your cars lighting system. The only difficulty to deal with on the Nissan Rogue is roughing the power wire to the car battery. After a year since the installation all my trailer lights work and I had to do zero maintenance.

2015 Nissan Rogue

Perfect fit
Good instructions
Plug and play harness

2018 Nissan Rogue

The product is solid and the video instructions for both the hitch and wiring was absolutely helpful and easy to follow. It is a sure fit for my vehicle. The time it took me to finish the install and wiring is o/a 2 1/2 hrs. And it is because I did not have a lift or a maintenance bay to go under the vehicle.


I've bought several hitches and parts from etrailer. I've always had excellent service and very quick delivery. I'm not sure what happened this time. Very slow delivery this time.

2015 Nissan Rogue

I have purchased the Tekonsha products in the past, have been pleased, I'm sure it will be more than fine this time around as well. I'm just waiting for cooler weather to come our way so I can install.


Needed a lightweight hitch and wiring harness for getting a small trailer w/ two kayaks to my favorite fishing holes. Super happy with everything. Would recommend etrailer to everybody that asks.

2018 Nissan Rogue

Install instructions were great and item seems like it will do the trick. Two things I wasn’t thrilled about: 1. The instructions don’t provide guidance on routing the connector through a grommet to get it outside (hangs out back gate.) 2. Routing the power to the battery was difficult considering most DIYers don’t have a car lift. Had to jack my car up to get under and route that wire.

2016 Nissan Rogue

My product arrived earlier than expected and the packaging was protective and all intact.

The Curt Hitch Includes everything you need for the installation. Right out of the box you can feel and see the quality. It is a bit heavy so I suggest a helper when you’re ready to lift it up and install the bolts. The installation video was awesome and it even used my year/model Nissan Rogue so everything it showed underneath my vehicle was accurate and there were no surprises. The video suggested tying off the muffler and on my model, and I didn’t need to. All in all, the install was much simpler than I expected and I couldn’t be more pleased with the results.

The Tekonsha T-One wiring kit (ordered separately) includes everything you need for the installation, down to wiring connectors and zip ties. Quite impressive. I can’t say enough about the quality and thoroughness of the etrailer installation video. It used my exact vehicle so there were no surprises. I used my iPad, watched the entire video to get a feel, and then used pause and play as I proceeded. The only challenging part for me was running the included 12v wire underneath the body frame to the battery. It was an adventure but I got it done. When I was done, the trailer lights lit up and I couldn’t be more pleased, with the product and the support. Thank etrailer for your excellence. Pretty rare these days.


Was fairly easy to install, the only kind was running the power wire under the car and up so it wouldn't snag or drag. Works great otherwise.


This was an exact fit, however, I took away a star based on having to run a constant +12 volts from the rear of vehicle to the battery. It seems that there could have been a connector to the brake light wiring for a constant live 12volts.


Easy installation, and an affordable pr ice.

2011 Nissan Rogue

Thank You All for providing the quality products You offer. The wiring harness for the 2011 Nissan Rogue was easy to install, and exactly what I needed. It was like factory quality construction, and the step by step video from etrailer on you tube made installation simple. Thanks, again, for offering the products to the public. Also, the correspondence, and tracking of Your products was very much appreciated.

100 satisfied with the T-one wiring harness I installed on my 2011 Nissan Rogue a year ago. Would highly recommend anybody who is looking for a wiring harness to purchase it from etrailer, as it comes with instructions that make installation very easy. Also, this is a high quality product.
Donald T - 04/21/2020

2019 Nissan Rogue

Very happy with my trailer hitch. Installation of the hitch and wiring was straight forward. Both hitch and wiring videos were very helpful.


I followed the instruction video and everything went well.

2010 Nissan Rogue

The outside box was quite damaged, by I was very pleased to see that the inside box was not damaged.

Show More Reviews

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

  • Attaching the Power Wire for a Trailer Wiring Harness on a 2013 Nissan Rogue
    On trailer wiring harness # 118480 for your 2013 Nissan Rogue, you will have to connect the power wire from the converter directly to the vehicle battery. No other 12 volt source should be used. It is not recommended to attach the power wire from the converter to any other 12 volt power source other than directly to the battery. The reasons for this are: connecting to a circuit like that 12VDC outlet defeats the purpose of isolating the trailer wiring from the vehicle wiring so short...
    view full answer...
  • What Gauge is the Power Wire of the Tow Ready Wiring Kit # 118480
    The power wire of the Tow Ready Custom Wiring Kit # 118480 that you referenced is 12 gauge. I attached an install video, installation instructions and an FAQ article on routing power wires for converters like this for you to check out also.
    view full answer...
  • Does the Tow Ready Wiring Harness # 118480 Have to Be Run to Vehicle Battery
    Powered trailer wiring harnesses like the Tow Ready part # 118480 that you referenced have to have the battery wire run all the way to the positive post of the vehicle battery. The reason for this is so that the taillights of the trailer won't be putting any amperage draw on the delicate taillight wiring of the vehicle. All of the amperage would be drawn from the battery instead. If you were to power the unit from a 12 volt source like what you mentioned you would be defeating the circuit...
    view full answer...
  • Trailer Wiring Harness for 2015 Nissan Rogue
    We do indeed have a trailer wiring harness available for your 2015 Nissan Rogue, part # 118480. I've linked you to the installation instructions as well as to an install video showing the harness being installed on a 2015 Rogue.
    view full answer...
  • Trailer Wiring Recommendation for a 2009 Nissan Rogue
    Your Nissan Rogue doesn't have the correct brake light setup for you to be able to splice in a 4-way in the way you described. Trailer wiring requires the stoplights and blinkers to be on the same circuit whereas your vehicle has separate turn signals form the blinkers so a converter would be needed. That's reason number one. Reason number two is that the taillight circuits of your vehicle don't have a high enough amperage rating to power your trailer's lights without overloading the circuits....
    view full answer...
  • Power Wire Has to be Connected to Battery for Trailer Wiring Harness # 118480, 2010 Nissan Rogue
    To install the Tow Ready Custom Fit Vehicle Wiring, # 118480, on your 2010 Nissan Rogue, you will need to route a wire from the red wire on the harness, under the vehicle (avoiding areas that may pinch or burn the wire), and to the positive battery terminal via the included in-line fuse holder and fuse. There will also be connections made at each of the taillights. I have included a link to the installation details and an installation video that will show how to perform this installation.
    view full answer...
  • Wiring Harness Troubleshooting For 2018 Nissan Rogue
    It is very odd that only the third brake light on your Rogue would be acting up after installing the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118480; it really should not be possible that only the third brake light is having an issue. I contacted the manufacturer about this and was told they have never heard of anything like this happening. They recommended disconnecting the negative terminal of the battery for about 5 minutes to reset any module that could have...
    view full answer...
  • Does Trailer Wiring Harness for 2015 Nissan Rogue SL Void Warranty
    There is a law called the Magnussen-Moss warranty act that states, in part, that if you install an aftermarket part on your car then it will not void the warranty unless that part caused the problem. So installing the trailer wiring harness, # 118480, will not void the warranty.
    view full answer...
  • Trailer Wiring Recommendation for a 2011 Nissan Rogue
    For your 2011 Nissan Rogue the trailer wiring harness part # 118480 would be confirmed as a fit and would work well for trailer wiring. I attached an install video for you to check out as well.
    view full answer...
  • Warranty Implications of Installing Tow Ready # 118480 Trailer Wiring Harness on 2014 Nissan Rogue
    The Tow Ready # 118480 is specifically designed to fit your Rogue. If it's installed according to the instructions, it will not damage anything. The trailer wiring harness is circuit protected, and will draw the power needed for the trailer lamps directly from the vehicle battery, instead of pulling it through the vehicle's taillight circuits. As far as warranty implications go, purchasers of aftermarket vehicle parts and accessories are protected by the Federal Magnusson-Moss Warranty...
    view full answer...
  • Is Insulation on Power Wire for Trailer Wiring Wearing Off a Concern
    I understand your concern and I don't want to just dismiss it, but the situation you described is not going to happen if you install the Trailer Wiring # 118480. If properly route the power wire of this would not wear through. And if that did happen the short it would create wouldn't drain the battery. Basically it would just blow the inline fuse that comes with the kit and the wiring would be inoperable. I attached a help article on how to route the power wire of kits like this for you...
    view full answer...
  • 4-Pole Trailer Wiring Harness for 2017 Nissan Rogue
    The Nissan Xtrail was never offered in the U.S. but it was sold in Canada and Mexico. Since all our wiring products are intended for the U.S. versions of Nissan vehicles I cannot be absolutely sure of the fit in another version. However, the Rogue does share the same platform as the second generation X-Trail. For the 2017 Rogue we have 4-pole trailer wiring harness kits like # 118480. Please refer to the linked photo that shows the connectors used on this product. Compare to those on your...
    view full answer...
    Image 1 for
  • Trouble with LED Trailer Lights While Connected to 2009 Nissan Rogue
    For starters, we need to find out which side the issue you are having is occurring on, the vehicle or the trailer. In order to do this you can either A) find a different trailer/tow vehicle or B) test the pins inside the trailer connector. For example, if you test the turn signal pin with an incandescent tester and it only activates after the turn signal has been applied multiple times then this would point to the trailer wiring harness being bad or incompatible. I am not familiar with...
    view full answer...
  • Install Video of Trailer Wiring Harness On 2020 Nissan Rogue
    I have attached below an installation video of the T-One Vehicle Wiring Harness part # 118480 which is a fit for a 2020 Nissan Rogue. The video is on an earlier model but the install process will be the same. The majority of the panels just pull straight out. The manufacturers install instructions are also attached below as well.
    view full answer...
  • Troubleshooting Trailer Wiring that Only Works on One Side After Install
    Typically when this happens the issue is that the connection made on the problem side just wasn't made all the way. If you unplug and replug in the connection on that side that usually cleans up the issue. You might also make sure that the pins of the trailer connector are clean as well. If you see corrosion take some sandpaper to the pins of the connector.
    view full answer...
  • Recommended Trailer Wiring Harness for a 2017 Nissan Rouge
    The trailer wiring harness I recommend for a 2017 Nissan Rouge is the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # 118480. This is a plug-in-pay option that provide a simple 4-way/4-pole connector. This is most common on small trailers.
    view full answer...
  • Trailer Wiring Harness Recommendation for a 2010 Nisan Murano
    The difference is the pin locations. The # 118480 and # 118481 are very similar. So much so that they share the same connectors so either would plug into either of your vehicles. But since the two vehicles call for two different pin outs on the connectors a second harness was made. Long story short, for your 2010 Nissan Murano you will have to install the # 118653.
    view full answer...
  • Trailer Has No Tail Lights when Using Tow Ready Wiring Harness for Infiniti G35 or Nissan Rouge
    If you have everything installed correctly and have connected the power wire to the positive battery terminal via the included fuse and fuse folder, and all other lights work, there could be a couple of issues. First, to find fuses and relays, you can use the owners manual for the vehicle where there is usually a map of fuses and relays. If you find that any are missing you will need to install them. Check that the white ground wire is attached to a clean metal surface. A bad ground can...
    view full answer...
  • Hitch, Wiring and Other Components for a 2009 Infiniti G37X to Tow Trailer of 1850-lbs Gross Weight
    The only size and Class hitch offered for your 2009 Infiniti G37X is a light-duty 1-1/4-inch Class I hitch, and we offer several. The correct fit for your G37 will depend on the version of the G37 that you have, convertible, coupe or sedan. I have linked our main page for hitches where you can use the drop-down menu at the top of the page to select your vehicle style and see the hitch options available. I have also linked several informational articles concerning hitch classes, installation...
    view full answer...
  • Will Draw Tite Class III Trailer Hitch Fit 2010 Nissan Rogue
    As long as your 2010 Nissan Rogue is not a Krom model, the Draw-Tite Class III Max Frame Receiver Hitch # 75902 will fit your vehicle and work well for you. I have linked the installation instructions for you as well an installation video of this hitch on a similar Rogue as yours. With the Class III rating, this hitch carries a maximum trailer weight capacity of 3,500 pounds and a max tongue weight of 350 pounds. You can find the towing capacity of your Rouge listed in your owner's manual....
    view full answer...
  • Trailer Wiring Harness and Installation Instructions for a 2016 Nissan Rogue
    I have included links to the instructions and to a video showing installation of trailer wiring harness # 118480 for your 2016 Nissan Rogue. I have also included a link with tips on routing the power wire for the harness.
    view full answer...
  • No Trailer Lights with Trailer Connected to a 2014 Nissan Rogue/Rogue Select
    There are a few things you can check on trailer wiring harness # 118480 for the 2014 Nissan Rogue or Rogue Select. First, make sure the power wire fuse is inserter and not blown. Replace the fuse if needed. If the power wire is attached to anything other than the battery then move that connection to the battery. Make sure that the white ground wire with the ring terminal on it is attach to a clean, bare metal surface. There can't be any paint or coating and ideally the harness would be...
    view full answer...
  • Recommended 4-Way Trailer Wiring for 2015 Nissan Rogue
    For your 2015 Nissan Rogue I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118480 with is a custom fit. The harness will attach to the factory wiring connectors located behind the trim panels in the cargo area on the driver and passenger side. The power wire will be run directly to your vehicle battery to protect your electronics from overdraw. Your 2015 Nissan Rogue is not rated for a towing capacity large enough to require a brake controller, so you...
    view full answer...
  • Troubleshooting Malfunction Of T-One Wiring Harness On 2016 Nissan Rogue
    I am sorry you are having trouble with your wiring of the Tekonsha T-One Wiring Harness, Item # 118480. At least it sounds like you can narrow down the troublespot to your 2016 Nissan Rogue side. I would start by making sure you have good ground connection on a clean and corrosion free metal surface. I know you have connected and reconnected the wires but check them again with a circuit tester like Item # 40376 and make sure you have good connections between wires with function being...
    view full answer...

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