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  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 # 118480
Our Price: $67.34
You Save: 21%
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. 1-800-940-8924 to order Tekonsha custom fit vehicle wiring part number 118480 or order online at Free expert support on all Tekonsha products. Great prices 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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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 Satisfaction Score:

Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118480

Average Customer Rating:  4.9 out of 5 stars   (465 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.

2019 Nissan Rogue

With the helpful videos this was very easy. We luckily had a car lift in a shop to use. We installed and plugged it in and works great. Now we can go pick up the boat and boat trailer that was given to us.



Its still working wondeful

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.

Mike D.


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

2020 Nissan Rogue

Works great! The video really helped on the install and broke it down step by step. I did run short on time at the end and just tapped the 12v power outlet in the back cargo area instead of running the power wire all the way up to the battery. Hopefully it doesn't cause any issues in the future.


Easy to install, local hitch company was going to charge 800, but this simple hitch is as good as any and easy for a monkey to install.

2018 Nissan Rogue

Instructions were a little unclear but sufficient. The products are fine so far and seem well-made. I would recommend to a friend. ty


Easy install. Worked great on our recent 7 week drive to Alaska and back!

2019 Nissan Rogue

Easy to follow instructions. Took about an hour to complete.

Isuzu Rodeo

This wiring harness for my trailer that fits my Nissan works perfect This not being my first rodeo I have installed numerous wiring harnesses over the years for so many different cars. I couldn’t be happier with this one. It is clearly the best one I have ever seen and used and the instructions were very good and easy to follow. I’ve been using it for quite some time now and still no problems and I have 3 different trailers I use it on. It is a pleasure to plug it in and see that the lights work perfectly every time. That has not always been the case over the years with other ones

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.


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.


I followed the instruction video and everything went well.



Excelente satisfacción


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.

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.

2016 Nissan Rogue

It fits nice nice no problems


My kit got caught up in shipping issues using the free shipping option and didn't arrive in time for a trip. After it sat at one location for four days, I ordered an alternative kit off [online store] this did arrive in time. This etrailer kit just sat in the box unused. for others, just plan on the free shipping option to take up to a couple weeks and you should be fine.

For the kit I got off [online store] I just wired power to the read 12v cigarette adapter and it works great. I store the harness above the spare tire when not in use.

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.


Worked great and everything I needed was included. Pretty good customer service when they follow up a year later to see how I likw it. Definitely good service

2017 Nissan Rogue

Hitch was a perfect fit, undamaged in shipment and this 77 year old installed it alone in 18 minutes. Easy to install and prompt service. Intended for use mostly with a cargo carrier.

2019 Nissan Rogue

I am sure hitch is of good quality as i had this same hitch before on same model of vehicle. But see pics on how it was shipped. No Styrofoam in box to lock-in hitch and the small box with the wiring in with hitch. The hitch smashed box with wiring in it,I hope the controller wasn't damaged. Hitch sticking out of box and powder coating paint scraped of in many areas. This will cause rust on hitch as all the salt from Minnesota roads during winter. I was able to get an install date based on a cancelation. I live in a rural area that has few locations that do installations and appointment is just in time for my first need of my new hitch. Sad a great company and great product has the poorest shipping department I have ever witnessed in my 68 years of life. Hope this review hits home to management. Rule: inspect what you expect of your product and shipping department. Positive note was the video of install and how it looked when installed.

Thank You. Have a wonderful weekend.


Here is a picture of the hitch receiver and the electrical plug. My installer decided to keep the plug near the hitch and not in the car when not in use.

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.

2010 Infiniti G37

I have an 2010 Infiniti G37 and the hitch and wiring fit perfect. The instruction video for the G35 was a perfect match

2015 Nissan Rogue

Perfect fit
Good instructions
Plug and play harness


Arrived before I had customer scheduled. Was exactly what I needed.


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

Show More Reviews

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

  • 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...
  • 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
  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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 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...
  • 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...
  • 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...
  • Draw-Tite Class III Hitch for 2019 Nissan Rogue
    The Draw-Tite # 75902 is a verified fit for your 2019 Nissan Rogue. I have included a link to the hitch and a link to the full install instructional video. I have also included a picture so you can see what this hitch might look like on your Rogue. Even thought the capabilities of this hitch far exceed your Rogue's abilities you will still benefit from the enhanced stability of the 2" receiver and that there are more accessories available (like bike and cargo racks) for a 2" receiver. If...
    view full answer...
    Image 1 for
  • 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...
  • 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...
  • 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...
  • 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...
  • Can Trailer Hitch Be Installed on 2016 Nissan Rogue and Parts Needed to Tow Trailer
    I took a look at the online owner's manual for your 2016 Nissan Rogue and it does not list any kind of restrictions when it comes to installing a trailer hitch. In fact there is an entire section dedicated to trailer towing, in which it lists a 1,100 pound maximum trailer weight, so the manufacturer is clearly okay with towing as long as you stay within the vehicle's limits. I am not sure why your local Nissan dealer would tell you a hitch couldn't be added. It's also important to keep...
    view full answer...
    Image 1 for
  • 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...
  • Can The T-One Vehicle Wiring Harness Be Wired Into A Fused Outlet Instead Being Ran To The Battery
    Technically you could splice into this outlet for since it does have a 10 amp fuse but you'd have to ensure the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118480 is the only thing on this line and would render the outlet useless. If you plugged anything else into this outlet you'd likely pull too much and blow the fuse. Personally, I recommend running the line to the battery directly to ensure that the ModuLite is receiving the correct amount of power and won't...
    view full answer...
  • Trailer Hitch Fit Recommendation for 2015 Nissan Rogue Select S
    For your 2015 Nissan Rogue Select I recommend Draw-Tite trailer hitch # 75902. This is a Class III trailer hitch with a 2 inch receiver rated for 350 pounds tongue weight and 3,500 pounds gross trailer weight. I have linked a video showing an example installation of this hitch for you. If you plan on doing some towing I recommend 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 inch drop. It also...
    view full answer...
  • Trailer Hitch Recommendation for a 2015 Nissan Rogue
    I can assure you that the Draw Tite Hitch part # 75902 is confirmed as a fit for your 2015 Nissan Rogue. Unlike some other online retailers (not naming names), we go to great lengths to verify a product as a fit for a vehicle before we will recommend it as a confirmed fit. I attached an install video that shows this hitch being installed on a 2015 Rogue just like yours. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts;...
    view full answer...
  • Why Do Hitches for 2014 Nissan Rogue have Higher Capacities than the Vehicle
    Trailer hitch manufacturers will rate the capacity of the hitches they make and those capacities will be for just the hitch. The Draw Tite # 75902 is a confirmed fit for your 2014 Nissan Rogue and would have more capacity that you would need. Basically when determining the overall capacity of a towing setup you have to go with the lowest rated component in the setup as the overall capacity. In your case it would be the vehicle at 1,000 lbs. If you wanted to do some towing you might be...
    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 trouble spot 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 # PTW2993 and make sure you have good connections between wires with function being...
    view full answer...

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