T-One Vehicle Wiring Harness with 7-Way Trailer Connector

Ordered a Class III hitch for 2006 Xterra with wiring. Seamless transaction fast shipping and perfect fit straight out of the box. One of the easiest transactions I have had. I highly recommend etrailer.com to my friends and those who want professional, fast service. 356180

This wiring harness for my 2011 Nissan Frontier (118266, comes with the relays for trucks that are not haul-ready from the factory) is just as advertised. The videos were the most helpful! Please watch them. It took me about 45 minutes to connect the relays inside the cab behind the kick panel on the passenger side, plus the harness at the rear of the vehicle. It took another 45 minutes to install the bracket for the 7-way plug, but that was only because I broke 2 drill bits trying to drill through my bumper. My bad! I tested the installation by hooking up to a trailer before closing everything up, and it all worked perfectly. Just as advertised. 474566

It turns out that the wires in the harnessing were reversed the trailer lights wouldn’t work. A simple reversing if the wires fixed the problem. Good product, as I had previously reported.

Todd - 02/10/2019

Everything plugged in and worked great. Install was easy and fast. I had a few issues with my install and use and etrailer support team was quick to respond to my calls and requests. My only concern is with the trailer brakes lock up issue that's been brought up several times in the comments and reviews sections. I ran into the same issue and wasn't exactly sure on how to fix this just from reading the comments and reviews. I reached out to etrailer to seek details on resolving this issue, turns out etrailer has detailed instruction on how to fix this problem. It would have been nice if this self-help link is presented/available on the product page. http://www.etrailer.com/faq-tb-14-02-Nissan-Suzuki-OEM-Wiring-Harness.aspx 141469

Fantastic plug and play installation of your product. Hardest part of the install was wrestling with my panel trim. Thank for your online tutorial and great on time delivery. 601987

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Everything connected/ plugged in as it should but I as other's saw the brakes lock up. Now I cannot use and do even have trailer brake lights 563723

The problem is that Nissan miswired the wiring connectors under some Frontier, Titan and Pathfinder models so that the 12-volt accessory feed is swapped with the output circuit for the trailer brake controller. The easiest fix is to cut the blue and the black wires in the harness feeding the trailer connector and swapping them. You could swap the wires on the trailer, but youd need to swap them back before towing that trailer with another vehicle. Youd also need to swap the wires on any other trailer you tow with that vehicle, so its just easier to do it on the vehicle side of things and have done with it.

-- Mike L - 09/11/2018

Everything plugged in, simple install. Only issue was the two wire connector at rear of truck had the black/blue wires reversed in connector. Brakes were on all the time. Did not know how to remove the small metal connectors so just cut black and blue wire and reversed them, all good now. The connectors and relays behind kick panel all went together perfect. Also ordered POD control at same time, all plug and play, works great. Except for the time to figure out problem with the black/blue wire connector, it would be 5 star. 418138

The brake contols, wiring harness, relays are all working fine after the first year. Just had the camper out this week and no problems at all. Nice installation and the videos are most helpful. Thanks

Alan V - 08/14/2018

It is always a pleasure doing business with etrailer.com, the communication of order status is great and their shipping is always fast. The wiring harness I purchased for my 2017 Nissan Frontier was extremely easy to install. It did not come with a bracket to mount the 7-way plug to the receiver hitch, but that was not my intended mounting location. The instructions and pictures weren't super clear, but I was able to make sense of them once I pulled the kick panel where the relays are installed. 367400

Ordered this for my 06MY Nissan Xterra. Installation was a breeze, just plug and play. Did find after installation that the 12V feed and the brake controller line at the 7-way plug were reversed after some troubleshooting of an inop brake controller. Not sure if it was a Nissan OEM wiring problem or wiring problem with the product I received. Never-the-less, cut the plug off and put it back on the correct direction. Now everything works at it should. 93080

Most Nissans are wired such that the connector will work properly out of the box. For whatever reason, Nissan wired some with these two circuits flipped, and we have not been able to determine and method or pattern as to which are wired differently. We are working with Tow Ready to find a solution that would not require the user testing the vehicle beforehand.

-- Patrick B - 1/9/2014

To date this product has worked flawlessly. Thank you for the follow-up. I will actually be contacting etrailer in the near future for the same type of system for a 13 Ford Explorer!

Chris J - 02/02/2015

Okay, so I've finally had a day off to fully install the kit in my 2013 Pro-4X Xterra. If you're looking to do the same and are wondering if it has everything you need, don't worry, it does. I didn't time myself during install but I know it took me less than 20 minutes, you don't even have to remove the spare tire to hook up the wiring in the rear. Literally plug and play. It took me a lot more time to figure out where to install the connector. Nissan went out of their way to make this an easy install if you don't have a factory towing package, this kit is worth it. Buy it, use it. 391865

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Great. Havent had any problems and dont expect any. Ive since added a brake controller and airbags. They all work in conjunction perfectly.

Shawn K - 06/11/2018

by: Richard12/16/2017

First time out I noticed my break controller was reporting "No Trailer Connected". I then attempted to move the trailer and discovered the breaks were locked. I unplugged the 7-pin trailer connector and borrowed a tester from the trailer dealer which showed the break pin and the battery pins (Black and Blue Wires) were swapped in the connector. I pulled the trailer home without breaks and verified the incorrect wiring with a second tester then swapped the two wires in the connector to resolve the problem. Later that night I looked on the internet and found where others have had the same problem with this harness. It appears the manufacturer has a quality testing issue ?? After repair the harness works as expected and is holding up well to use. NOTE: This is the only issue I have ever had with anything I have purchased from etrailer and will continue to use them in the future. HOWEVER, I suggest you test a new wiring harness BEFORE trying to use it...like I should have! (etrailer part number TR20117) 460641

Richard,Thank you for your review.The electric brake and battery charge wires in the main harness are reversed on a small number of Nissan and Suzuki vehicles with factory tow package wiring that use the # 118266
T-One Vehicle Wiring Harness with 7-Way Trailer Connector
$81.23 and # 118267
Replacement Wiring Harness for Tow Ready Nissan Vehicle Wiring Harness
$28.95 harnesses. This will cause the trailers brakes to lock up as soon as the trailer is plugged in. I have attached a link to help you rewire your harness.

-- Heather A - 12/19/2017

Helpful Link

Helpful Link

Helpful Link

This #118266 7-Way connector harness kit contains everything needed to install basic trailer light wiring on ALL 2015 Xterras, regardless of trim level. The vehicles are completely factory prewired for a simple plug-in installation as described below (other recent model years are most likely also prewired, just check out my photos of the three connectors and see if they are on your vehicle. If you do indeed have the three connectors, the wiring harness plugs into the two factory installed connectors located on the frame, to the left of the spare tire area (one contains the wiring for the lights, the 2 conductor connector carries the +12v charge line and the brake control wire). The relay cable & relays are installed behind the plastic panel on the right side of the front passenger footwell. The trickiest part is removing that panel, along with the plastic doorsill trim to the right of the seat without damaging them. Be very careful not to break the plastic tabs and grabbers that hold both panels in place. This harness kit does not contain a mounting bracket for the 7-way connector. I recommend the #TM76474 bracket, necessary to mount the 7-way connector to your bumper. If you do need to control electric brakes on your trailer(s), consider the additional two items, below. If you choose something other than a Tekonsha controller, you will need the short wiring pigtail that is compatible with that brand, instead of the #3050P. #90195 Tekonsha Prodigy P3 brake controller. An excellent, top performing unit. Other lower priced Tekonsha controllers may meet your needs. #3050P Wiring pigtail. Connects Tekonsha brake controllers to the factory installed connector (see photo) under the dash, above the right side of the driver footwell. If you use a different brand of brake controller, pick out the appropriate pigtail to match it. NOTE: There are apparently two major wiring standards associated with 7-way connections. One of them has the brake control line swapped with the +12v charge line. Make sure to check your trailer plug and wiring before hooking up to your vehicle. You may need to cut and cross the two lines leading to the vehicle’s 7-way connector. If you need to occasionally swap between the two wiring standards, install insulated male & female crimp-style connectors in the lines. Use heat shrinkable tubing over the connections to make them more resistant to the weather. For a more permanent, reliable connection, solder them instead of using the crimp connectors and apply shrink tubing over the joints. 233614

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Product is supposed to be a direct fit for Nissan Frontier install. Unfortunately, this was not the case as the blue and black wires are reversed as reported by so many others on this site and other sites (fortunately, I knew to check before hooking up a trailer) . These wires are for constant power and the trailer brakes. Fortunately, there was a video posted on etrailer on how to reverse the pins on the wiring harness that connects the vehicle wiring with the 7 pin connector at the rear of the vehicle. The video showed how to reverse the pins in the 2 pin connector that attaches to the vehicle wiring - the 2 pin connector contains only the blue and black wires. Not too difficult but definitely takes some time due to the process of installing everything on the vehicle, testing, taking parts back off the vehicle, disassemble/reassemble the wiring connector, reinstall on the vehicle and retest. 3 starts because this is supposed to be plug and play - not sure if this is a Nissan issue or the wiring manufacturers issue but I would have preferred to simply plug it in and be done. Also, I purchased the Draw Tite (Item 18138) mounting bracket and it did not work with this harness - the holes did not match up and would have required drilling all new holes. 522505

I have a 2005 Xterra just purchased. It did not come with the towing package, but before I bought it I found out that everything was there and pretty much plug and play with the right setup. i hunted down a lot of options, including from the trailer rental place for about 250 but was unsure what I would end up with as far as the electrical harness. After a few searches I got a hit from etrailer who advertised two hitches, Curt and one other(so you know which one I picked). I watched all the installation videos, including the add on's. I bought the whole package. Hitch, harness, ( 7 point RV and Marine ready, 7 to 4 adapter for my dump trailer. I also bought the universal bracket to hook up the 7 point adapter. The hitch did not fit my car. It hit the bumper before it would line up with the bolt holes to secure it ,to the holes it was designed to secure it. I had to use a jack to line up the holes, but at the end I got it to fit. I expected to have to modify the bracket, (maybe I will send it to them.) . The hitch actually really did fit, I just had to tweek it a little. Bottom line, I will order again. The product is very high quality, and looks killer on my new vehicle. They have many accessories. Make Nissans Great Again!! Pic coming soon! 656224

by: Dale S06/10/2019

I bought this as a replacement to the same item that was previously purchased. The original one only last one year as it did not have an adequate seal for the outside connector and the inner terminals corroded away. The new one was better designed and seems to be holding up OK so far. Otherwise, the wiring harness went together OK and worked fine. 655820

by: Art B06/09/2019

Purchased this harness and related for my 2009 Xterra. Everything was great - the parts fit, the directions were good, and it all went together as advertised. 655729

I ordered a receiver, wiring and brake controller for my new Nissan Frontier. Christopher was great to deal with and he handled making sure my order was complete and correct. He answered all my questions. The items arrived promptly and I began the install. There were two issues - not unusual, and in both instances a call to etrailer resulted in friendly, knowledgeable folks giving me fast, correct advice/fixes/email articles that made the install a snap. I've forgotten the first women's name (sorry!) Molly handled the second issue and within minutes had the answer to why my trailer brakes were locking. She sent me an article detailing how some of the wiring from Nissan was installed backward, how to diagnose this was my issue and how to correct it. That made short work of that issue. Accept that those of us who do these installs only a couple of times in our life will have questions/issues and buy from the folks who are going to provide the experience and help to make the project quick and enjoyable. I wouldn't buy anywhere else. 654085

As with most buyers, I had to reverse the black and blue wires. Other than that it installed quickly and worked fine. Videos helped to make install a breeze along with the fix! 647645

by: Adam F05/28/2019

This was very easy to install. Install video was a big help. I installed this 1 year ago and have not had a problem with it. Took about 30-45 minutes to fully install, and I took my time not to break any of the trim pieces. 647636

Received order in excellent shape but haven't installed it yet. Working with order staff was a very pleasant experience. 643904

So Far so Good Products worked a advert ised 642056

by: George R05/12/2019

Perfect fit! No problem with installation or operation. 641303

Great product. Easy installation. 637733

Everything went better than expected. My order came faster than expected. All is good. Will be ordering more soon. Thanks 633659

The product plugged in with no problems. 632051

The product did not fit that great I had to open the holes up to mount it. 632046

This harness made installing the trailer wiring on my 2011 Nissan Frontier easy. My local trailer hitch installer wanted over $600 to install wiring and the hitch. etrailer had the entire setup to my door for under $200 including the wiring harness, hitch, and bracket for the plug. Installation for the whole package took me about 45 minutes. 628354

Quality product. 625459

Everything looks good so far. It is exactly what I ordered and came in on time. I won't be installing the wiring harness until spring because of snow and salt on roads right now. I will send another review at that time. Thank you 608038

These wiring components work perfectly. They were easy to install with the instructions. Anybody can do this. I got the 7-pole connector in this package and also bought a 7-pole to 4-pole adapter with a test light so I could make sure that the connections were working. I also bought the Polak PK12711Y bracket to put on my trailer hitch. I tried the standard bracket from Walmart but they did not match the hole pattern on the 7-pole connector. Carol C recommended the Polak bracket and the hole pattern matched perfectly. I can now pull my trailer. I will return to etrailer for any of my trailer or other vehicle part needs. Thanks you etrailer. 607765

Arrived on time. Packaged well. Install was very easy. Did not need to lower exhaust as other have mentioned. Looks great! 604363

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Not sure whether it is my truck or the harness but the brake lights and aux power where crossed. Took it to a local shop $100 later all is good. Harness is nice. Again I don't now if it was my truck or the harness. If you have a 4 way that works properly your probably fine 599443

by: William01/13/2019

Easy to install. Plugged in and worked great, still does! Very happy! 597166

I received what I needed and in a timely manner! Thank you 594780

Worked perfectly on my 18 Nissan Frontier. Plug and play with the cable harnesses. I ended up drilling a circular hole in the bumper and installing the plug straight into the bumper with some machine screws as opposed to hanging it off of the hitch. 594201

Great product, just wish it came with a mounting bracket. Looks like it is very easy to install. 590045

I'm very thankful with this company they are on time and the product it's great. I'll order again with them because I trust them. 5 star for etrailer.com 589539

Bought for a 2018 Nissan Frontier. I had already watched the installation videos by etrailer, so the install was quick and easy. The rear wires and plug were plenty long for proper positioning. There is no bracket for the plug. The inexpensive PK12711U bracket worked fine. The wires and relays that go behind the passenger kick panel were also easy to install. All the trailer lights worked perfect the first time! Very satisfied. 586274

Product did not fit with connectors on my car, despite specifically checking the make/model/year on your website. What's your return policy? 583713

They have what I needed but wish it would make recommendation on other parts that I might need. Because I forgot something 580086

Excellent package! Everything needed for a quick installation of 7-flat trailer harness! 572197

Very easy to install. 519886

2016 Nissan Frontier 4 door Desert Runner. All the wiring fit great. True plug and play. Giving it a 4 star because it did not come with a mounting bracket for the 7 way plug. Should have been included. There are 2 different size plates for mounting. Make sure you order the correct mounting bracket. I used a Hopkins #48625. And get screws and nuts for mounting. # 10 x 3/4" worked for me. Shipping was on time. Support from etrailer is great 517154

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by: Jeremy06/03/2018

2013 Nissan Frontier

Installed in a 2013 Nissan Frontier SL. Was easy to install-no mods or hassles. Watched video and went and did it-voila! Couldn't be happier! 516626

Quick and easy to install. 515676

Another easy install made easier by the library of videos on etrailer. Thanks! 512559

The products I ordered just arrived and are in good order. Also one product was back ordered and they called to help me find a suitable replacement or see if I would like to wait for the other part to come in. They were very helpful my package showed up just a few days later. Over all very pleased with my experience. I really like to shop online but sometimes it can be frustrating , however etrailer made it very satisfying. 506325

good, as described. had a bit of confusion on install of relay, but your guy Ian put me on the right video and easy-peasy, installed. (it would be nice if wiring kits came with a small tube of diaelectric grease... but Thanks Ian! 501000

The wiring harness is well made and exactly as described. The email help to choose the correct one ,was quick and accurate, and their pictures of connector locations was very helpful. I asked if they could add the mounting hole spacing for the connector mounting mounting bracket , and got a bracket drawing with dimensions via email. I give them my recommendation. 484210

Easy to install, excellent support vide os 483901

Fast shipping. Will do business again. 477221

Product is working really good, thank you for the follow up.

Joseph - 05/04/2019