T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
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2009 Saturn Vue
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2009 Saturn Vue
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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.
Features:
Specs:
Installation: This custom-fit T-One connector plugs into your vehicle's wiring harness which is located behind the driver's and passenger's-side tail lights. You will have to remove the tail light assembly to access this harness.
Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery and insert the provided fuse.
Once installation is complete, the 4-way flat connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.
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.
California residents: click here
I was having difficulty finding a wiring harness for my Dodge Journey. I found etrailer.com online and called their 800 number. Not only did they have the item in stock they shipped it that right away and I had it in hand in a few days! The representative I spoke to was very courteous and knowledgeable!
Thank you etrailer for a job well done!
Easy to follow installation instructions, High Quality item. Works perfect !!
CAME PACKAGED IN WITH HITCH WENT IN VERY EASY ONLY DOWN FALL I HAD WAS TRING TO HIDE THE WIRE THREW FRAME FORM BATTERY BUT OTHER THEN THAT WAS A BREEZE PHOTO SHOWS HOW EASY THIS PLUG AND PLAY REALLY WORKS
THANK YOU FOR HELP IN PICKING OUT THE RIGHT HARNESS FOR MY NEW CAR WHERE I WOULD NOT VOIDE THE WARNTY
A
Wiring harness worked fine once I got it installed. The online videos are a grea resource to follow and I frequently ran from the garage to my computer as I went through each step. Since I was doing this in my home garage without the ability to put the car up on a lift like in the video, running the wires underneath up to the battery was a bit of a trick since I couldn't fit 2 arms up most of the time (got pretty good at fastening zip-ties one handed, which is harder than it sounds), but I was able to eventually get it completed.
Michael V. 
5/4/2018
Wiring harness is still working great after a year.
As always, fast shipping and excellent customer service. Wiring was straight forward on our Dodge Journey and went very well. Plug and play with only one wite to run.
Thanks again for everything.
Very fast shipping easy to install hitch and wiring with great instructions. I’m not a mechanic or fabricator and was able to install with no help in just a few hours. Saved me lots of money on an install, everything fit perfectly and looks factory. Very high quality. Thank you etrailer!
All plug and play except the power wire, routing the power wire on jack stands sucked. Great product and happy with it, very easy install. I also bought the 4 pin to 7 spade adapter for a small pop up camper.
Everything was here earlier than expected.
Perfect very happy with it.
Harder than expected but friend Jim Richardson had a shop lift & helped me greatly. Mufflers had to come down. DODGE Journey 2018
Great people to do business.Appreciate you. Your your lady was really great on phone. Be proud of her.
Thank you
Had my hitch with wiring harness for one year now. It was relatively easy to install. Excellent directions online. The hitch looks good and has excellent durability.
Was very easy to install
Bruno
3/12/2025
Excellent
Fit just great, if you want a good job done easy, this is the way to go.
This is a product review of the T-one Wiring Harness- 118536 Installation on a 2015 Dodge Journey Crossroad (with LED Lights)
The package is complete and seems well made and installs straight forward just as in the well made video (highly recommend). I do have a couple of complaints/recommendations:
1. Include A LOT more zip ties. Its a long way to the engine compartment.
2. The powered black wire should come pre-spliced correctly soldered and shrink wrapped rather than a butt splice by the installer.
3. The method and location for the control box mounting that is intended to be adhered with double stick tape is NOT well designed. There is better mounting space further down the cavity from the tail light assembly. There is much better access from below the bumper.
4. Lastly- this is a rant on Dodge. Shame on them for requiring this kind of cobble kit that should be part of the factory wiring!!!
Routing the power wire up to the engine compartment is not so simple to route cleanly and keep away from the exhaust. Knowing what I know now, I would look into the possibility of tapping into a closer spare or capable 12V+ circuit that is closer.
Erik S.
9/12/2017
Still great! I will be doing this again on another vehicle. Thanks etrailer!
Product had been working fine. I hard wired it into a 7-way tow vehicle end and use the 7-way for towing. Installation was easy. I had more trouble locating the correct wire for the Backup light circuit which was a separate wire from this harness. I also ran a 12-V fused hot wire from my battery to the rear of the vehicle for inclusion into the 7-way connector. Most of this wiring harness is hidden, so no pictures are available of the installation.
Chiefh
11/3/2020
It is working fine. I have the 4-way connector hooked to my 7-way wiring and the 4-ways and extra cable are parked behind my bumper fascia. I have 12-Vdc and a brake control wire. I do not use the brake control as I bought the Curt 7-way Bluetooth controller.
Installation was as per the instructions. If you are handy with your own auto repair, this is an easy system to hook up and use. Only issue came about 9 months after install, as the trailer lights did not work. Plugged in the tester and it also showed a failure. A day later, it was working again. May need to get into the connections to verify they are solid.
Heather A.
12/18/2020
It is a good idea to check the connections to make sure they have a solid connection with the vehicle plugs. It is also a good idea to make sure the ground connection is stable on a bare metal surface free of paint or dirt. Intermittent issues like what you are experiencing is very common with a bad ground.
I’m holding back on 5 stars. Kit is easy enough if your experience level is there. With 30+ years of Automotive work I really had no issues. My only reason for not giving this 5 stars is the kit should include one additional item. 3m and others make great little sticky back attachments for zip ties, this kit should have at least 8-10 to properly attach the wiring. Just to many areas that my Dodge Journey lacked good attachment points.
Etrailer, Pricing, shipping and informative videos are great 5 stars there
William
2/12/2020
Excellent product, Zero issues after a year
The product did work fine although there were a couple of faults I did find with the wiring product. The wiring from the power supply box to left tail light and turn signal should be a little longer so you could position the box better and I had to cut the green wire that went to the right turn signal and ad about an extra twelve inches to it in order to get it long enough to position it away from muffler and to protect it from the weather. At first I was kind of reluctant of trying to use it because the sealed package had been taped shut and one side was part way open. But would recommend it.
John N.
4/23/2015
Doing great so far.
Very simple to install the the step by step video instructions. I appreciate that it comes with everything you need.
product was as stated,the video on their website for the product ,went over the 2 options I had for the trailer wiring harness for my car and narrowed it down to this one ,it also had installation instructions.shipping was fast ,very pleased with purchase.
Jennifer
6/8/2020
have had this product for over a year and it works great and havent had any problems at all.
I bought a plug n play trailer harness for my 2016 Dodge Journey. I had priced other "so called plug n play" harnesses. But this one truly is, it took me about 20-30 minutes to install. Online shopping for this was a breeze. And the follow up by the staff was amazing. Thanks for making this so easy.
James G.
5/9/2020
It still works great
perfect fit ,very easy to install. Video online was great they even gave the product part number for my vehicle. Light harness was also installed flawlessly. Very happy with products. Thank you
Marc S.
5/11/2021
Working great, an easy install.
This a good product. I have had zero issues and the installation was easy to do. I would recommend to anyone with a Dodge Journey who is looking to add the lights hookup for their hitches.
Matthew
8/20/2022
This product is still working great. No issues. Would recommend to any Dodge Journey user. Thanks for the great utility.
This Item is just as advertise, including the pictures and installation. I received it in 4 days and had no problems installing it in a 2014 Dodge Journey. This is my first time buying from etrailer, I will be back.
Chris P.
8/23/2016
Rachael, I want to thank you and ETRAILER for doing a follow up on the product. So far no problems and dont anticipate any. I have also installed another for a friend who took my advice and purchase a trailer wire harness from ETRAILER. No problems with that installation either.Thanks again,
I like that it plugs into the back of the light socket without having to cut wires - I would hate to cut into the wires of a 1 month old vehicle.
One error in my instructions - the power wire on my module is black, not red as in the instructions. Easy enough to figure out since it was the only wire left.
I installed mine differently than instructions, kept the all wiring and the module inside the vehicle, that way its not exposed to the elements. By removing the bottom sill cover, and prying back interior panels, I was able to push wiring through the body to the taillights. I fed the flat 4 into the bottom and coiled it where the jack stores. Can just pull the flat 4 cable out and route it under the hatch when I need to pull trailer.
I also used the rear cigarette lighter/power outlet as a power source, rather than route a wire to the front. I had to cut into the pink wire and use a butt connector to do this. It wouldn't carry as much current as running a separate wire, but it worked when I tested it.
I bought a new car during the pandemic and had to have a trailer hitch to tow my jet ski. I found the etrailer website and ordered my hitch. I couldn't find the wiring on the website and when I called, he asked me what kind of lights I had on my new car - had never heard of that before, but come to find out they were LED lights, so I was able to order the right part. I paid a little more for faster shipping and it arrived 2 days later. Had it installed and all seems fine. I haven't had a chance to use it yet, but everything looks great. Excellent website, customer service and shipping. Thanks.
Installation of the hitch and wiring harness on my 2016 Dodge Journey was much simpler than I had expected (excellent instructions, btw), and the wiring harness and hitch have held up extremely well. I tow very rarely, but I have full confidence that when I back up to the trailer everything will work as it should. Great product. Zero complaints!
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Jay M.
9/24/2017
AWESOME LOVE IT WORKS GREAT