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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

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Custom Fit Vehicle Wiring

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Custom Fit Vehicle Wiring 118536 - Custom Fit - Tekonsha
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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. Call 800-298-1624 to order Tekonsha custom fit vehicle wiring part number 118536 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.
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  • Reviews (177)
  • Q & A (78)
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  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring

  • 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.


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 behind tail lights
    • 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 the 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 light: 2.1 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 behind the driver's and passenger's-side tail lights. You will have to remove the tail light assembly to access this harness.


Tail Light T Connector Diagram

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.



118536 Tow Ready T-One Vehicle Wiring Harness

Item # 118536

Installation Details 118536 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 - 118536

Average Customer Rating:  4.9 out of 5 stars   (177 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.

- 118536
by:
2014 Dodge Journey

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.


Comments
Wiring harness is still working great after a year.
Michael V - 05/04/2018



- 118536
by:
2018 Dodge Journey

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.


Comments
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.
ChiefH - 11/03/2020


- 118536
by:
Dodge Journey

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.



- 118536
by:
2016 Dodge Journey

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


Comments
AWESOME LOVE IT WORKS GREAT
JAY M - 09/24/2017



- 118536
by:

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!



- 118536
by:
2016 Dodge Journey

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


Comments
Working great, an easy install.
Marc s - 05/11/2021


- 118536
by: 06/07/2021

Easy to install



- 118536
by:
2019 Dodge Journey

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.



- 118536
by:

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.


Comments
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.
-- Etrailer Expert Heather A - 12/18/2020


- 118536
by:
2014 Dodge Journey

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.


Comments
have had this product for over a year and it works great and havent had any problems at all.
Jennifer - 06/08/2020


- 118536
by:
2016 Dodge Journey

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.


Comments
It still works great
James G - 05/09/2020


- 118536
by:
2018 Dodge Journey

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


Comments
Excellent product, Zero issues after a year
William - 02/12/2020



- 118536
by:

I called several other trailer supply stores and none had what I needed for my vehicle. They all said they would have to special order. etrailer not only had what I needed but I received it in less than a week. Very satisfied.



- 118536
by:

Easy to hook up,, plug and play


Comments
Still working alright
Lee - 05/12/2021


- 118536
by:
2015 Dodge Journey

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.


Comments
Still great! I will be doing this again on another vehicle. Thanks etrailer!
Erik S - 09/12/2017



- 118536
by:

Easy to install and works great!!



- 118536
by:

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.



- 118536
by:

One year later, works great, no problems. Good product, install was easy. A must have for trailering.



- 118536
by:

Great easy install and works great



- 118536
by:

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.



- 118536
by:

I watch the install video this was very easy to do. This is nice because if your trailer lights short out it this will protect it so your LED lights don't get affected. The video is very descriptive and helps you wire it. You just need to think about the wire that goes to the battery how you want to run it That's your preference.



- 118536
by:

Easy to install



- 118536
by:

Easy to install works just like it shou ld.



- 118536
by:

Got the trailer hitch and T-One wiring harness. Directions that came with both were spot on. Looks good on the vehicle. Have not used it yet, but I am sure it will work just fine. Great Products.



- 118536
by:

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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Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

  • How to Tell if 2018 Dodge Journey Has LED or Incandescent Tail Lights
    The easiest way to determine if you have LED or incandescent lights on your Dodge Journey is to simply watch them illuminate and turn off. If they come on immediately and turn off immediately then they are most likely LEDs. LEDs will also be quite a bit brighter and almost painful to look at directly. If instead you can see a bit of a transition both when coming on and turning off and the light is a bit duller, you have incandescent bulbs. If you are still unsure I recommend simply...
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  • Vehicle Wiring Harness For Installing A 7-Way and Brake Controller On a 2017 Dodge Journey.
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  • Trailer Wiring Recommendation for 2018 Dodge Journey with LED Taillights
    For your 2018 Dodge Journey with LED taillights the best trailer wiring option we have is the Tekonsha kit part # 118536. This is our most reliable option that we have for your vehicle so I recommend it for you.
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  • Wiring Needed for Brake Controller in 2016 Dodge Journey with LED Tail Lights
    There is wiring you can add to your 2016 Dodge Journey with LED tail lights but there is not a specific harness for a brake controller. If you are towing with a hitch on your '16 Journey such as the Curt # C13201 you will need to start by adding a 4-way that is compatible with your LED tail lights, the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118536. I have added links to installs of both these parts on a 2016 Journey for you to use as an easy reference for your...
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  • 4-Pole Trailer Wiring Harness Kits for 2017 Dodge Journey Crossroad
    For the 2017 Dodge Journey that has LED-type tail lights we offer a powered 4-pole wiring harness kit, Tekonsha # 118536. This installs with plug-and-play taillight connectors that install at your tail lights and with a single wire for 12V power that needs to be run up to the engine compartment. Because your car has high-efficiency LED lights, its wiring can be thinner gauge than it would be for standard bulbs, and this means that this OEM wiring cannot handle the additional power drawn...
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  • Vehicle Trailer Towing Connectors for a 2018 Dodge Journey
    Although I don't know if your 2018 Dodge Journey already have wiring for the light functions on a trailer, I can let you know how to find that out and offer some solutions for if you don't. To figure out if your Journey has wiring you simply need to check the back of your vehicle and see if there is a 4-Way flat connector that looks like the picture I attached for you. You may also want to check inside the hatch of your Journey as well. If you cannot find a connector then that means...
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  • Correct Wiring Harness for a 2012 Dodge Journey SXT
    I spoke with my contact at Tow Ready and verified that your 2012 Dodge Journey SXT will not have to be reprogrammed if you install the Tow Ready T-One Wiring Harness, # 118536. This wiring harness will use the factory connectors at the back of each tail light assembly to provide signals to the 4-way connector. This wiring harness will only fit the 2012 Dodge Journey and it will not fit the 2009 to 2011 Journeys. I know some Dodge vehicles will come with a factory trailer connector tucked...
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  • Can Ground Wire of Trailer Wiring Install Harness # 118536 be Ran to Vehicle Battery
    Yes if you wanted to run the ground wire of the trailer wiring harness part # 118536 back to the negative side of your vehicle battery this would work great.
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  • Should the Trailer Hitch or Trailer Wiring be Installed First on a 2014 Dodge Journey
    Installing the wiring harness # 118536 first on your 2014 Dodge Journey could make it easier. This is because you will need to route a connector from the left side of the vehicle to the right side. The hitch could potentially get in the way. Take a look at the video I have linked showing installation of the wiring on a Journey. Notice that the hitch is installed in this video and it wasn't really in the way. Ultimately I don't think it is going to matter which you install first. You...
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  • Finding the Reverse Light Wires at the Back of a 2014 Dodge Journey
    If you are installing a 5-, 6-, or 7-Way trailer connector (or a back up camera) on your 2014 Dodge Journey and the trailer either has an electric reverse lock out or reverse lights then the connection to the reverse light circuit on the vehicle will be necessary. But if you are installing a 4-Way or the trailer does not have an electric reverse lockout or backup lights (or you are not installing a camera) then the connection to the reverse light circuit on the vehicle is not required. In...
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  • How to Tap Into the Reverse Light Wire on a 2013 Dodge Journey to Use a 4- to 5-Way Adapter
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  • Comparing Current Output of Tow Ready and Curt Wiring Harnesses for 2013 Dodge Journey with LEDs
    A vehicle that uses LED-type lighting for its own light functions will typically use smaller gauge wiring than a vehicle that was designed with standard incandescent lights which draw roughly 10 times as much power. This efficiency with LEDs makes the vehicle able to use less copper, which means both lower cost and lower weight. Not a bad thing. That lighter-gauge wiring also means that the trailer wiring harness you use will have to be a powered type, which draws the actual power for...
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  • Trailer Wiring for a 2013 Dodge Charger RT
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  • Trailer Wiring 4-Way Recommendation for 2016 Dodge Journey with LED Taillights
    For trailer wiring confirmed to fit your 2016 Dodge Journey with LED taillights you would want the Tekonsha kit part # 118536 which is confirmed as a fit for your specific model and taillight configuration. I attached an install video for you to check out as well.
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  • Troubleshooting Trailer Lights Where Running Lights Work But Other Functions Do Not
    If you have a 2011-2018 Dodge Journey with LED tail lights, then the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118536 you asked this question from is the correct harness. If not, I need to know your vehicle information to help. If this is the correct harness, then it is very likely that you have a ground wire issue on your trailer. Ground wire issues often allow some functions to work and not others. I recommend checking your ground connection for a bare metal...
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  • Trailer Wiring Harness for 2016 Dodge Journey With LED Taillights
    For your 2016 Dodge Journey with LED taillights you do need the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118536. This is also the case if your trailer has LED lights, as that won't affect the wiring harness you need on your Journey. Additionally, if you need a trailer hitch I recommend the etrailer Trailer Hitch Receiver # e98845. This hitch is a bolt-on installation with no drilling required and has a nice black matte finish which will hide any minor scratches...
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  • Trailer Wiring Harness Recommendation for 2014 Dodge Journey
    I wish there was but the only way to replace trailer wiring is with an entire new kit. Which now would be a great time to go with the # 118536 kit instead. The Tekonsha brand of trailer has been much more reliable for us than the Curt kits which are pretty easy to short out. Main reason is because the Tekonsha kits can higher a much higher amperage rating.
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  • 2011 Dodge Journey Driver Side LED Brake Light Not Working After Installing a Trailer Wiring Harness
    If this problem is on the 2011 Dodge Journey tail light then on the affected light check its connector or any broken or bent pins. It is possible that something happened with the connector that is causing it to not work properly with or without the wiring harness connected. Also, make sure you are using the wiring harness for Journey's with LED tail lights, # 118536. If the issue is on the trailer tail light then it sounds like either that one light is bad and needs to be replaced...
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  • Trailer Wiring Harness Recommendation for a 2016 Dodge Journey
    I have a trailer wiring harness I can recommend for your 2016 Dodge Journey, but it is not the part # 118536. Instead you would want the # C59496 as it has been confirmed to fit your vehicle. It is not a plug and play option though and will require some hardwiring.
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  • Does the Computer of a 2013 Dodge Journey Need to Be Reset to Install Trailer Wiring
    I spoke with my contact at Tow Ready and verified that your 2013 Dodge Journey will not have to be reprogrammed if you install the Tow Ready T-One Wiring Harness, # 118536. This wiring harness will use the factory connectors at the back of each tail light assembly to provide signals to the 4-way connector. I know some Dodge vehicles will come with a factory trailer connector tucked away under the rear of the vehicle and in order to use the factory installed connector the body control...
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  • Recommended Wiring Harness for 2013 Dodge Journey
    I do have a solution for you, however the Tekonsha T-One Vehicle Wiring Harness # 118495 referenced in your question is confirmed to work with just the 2010 Dodge Journey. For your 2013 Dodge Journey, I instead recommend the Tekonsha T-One Vehicle Wiring Harness # 118536 if your vehicle has LED tailights or # 118567 if you have Incandescent Bulb taillights. Regardless of the which harness you need, these will simply plug into existing wiring behind the driver and passenger side tail...
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  • Parts Needed to Add Brake Controller and Charge Line for Trailer Battery on 2017 Dodge Journey
    If your 2017 Dodge Journey isn't yet equipped with any kind of connector you will need to start with a 4-Way. For this I recommend the Tekonsha T-One # 118536 if the vehicle has LED tail lights or the T-One # 118567 if it has standard incandescents. Either option will plug right into existing ports behind the rear tail lights for installation. Once the 4-Way is in place I recommend using the Wiring Kit # ETBC7L to upgrade it to a 7-Way. The harness will plug right into the 4-Way and...
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  • Will T-One Wiring Harness Work on a 2016 Dodge Journey?
    The T-One Wiring Harness, # 118495, you previously purchased is not a fit on your 2016 Dodge Journey. Your new vehicle will need the T-One harness # 118536. This connector will work as long as you have LED lights, as you mentioned. I have included a video install of this harness on a 2016 Dodge Journey for you to take a look at.
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  • Availability of Vehicle Wiring Harness and Draw-Tite Mounting Hardware for a 2017 Dodge Journey
    For a vehicle wiring harness on your 2017 Dodge Journey with LED taillights, I recommend the T-One Vehicle Wiring Harness, # 118536. This wiring harness will plug up to existing OEM wiring plugs on your Journey. If you are only needing the mounting hardware for the Draw-Tite Max-Frame Class III Hitch, # 75648, then use part # RHK. This is a replacement hardware kit for trailer hitches. At the product page on # RHK, enter the Draw-Tite hitch # 75648 in the box and then select Draw-Tire...
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  • Recommended Trailer Hitch for 2018 Dodge Journey AWD
    We actually have a somewhat large selection of trailer hitches that are confirmed to fit your 2018 Dodge Journey with the AWD. I specifically recommend the Draw-Tite Max-Frame Trailer Hitch Receiver # 76225 because of its hidden design and superior ground clearance. This Class III hitch features a drop-down 2" receiver that allows the crosstube to stay completely hidden behind the bumper. This not only creates a clean, factory-like appearance but it also keeps the receiver further...
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    Image 1 for Image 2 for
  • Towing Capacity and Recommended Trailer Hitch for 2018 Dodge Journey
    I took a look at the online owner's manual for your 2018 Dodge Journey. If you have the 2.4L engine you can tow a trailer that weighs up to 1,000 pounds. If you have the larger 3.6L engine the maximum trailer weight is 2,500 pounds (with 1 to 2 people in the vehicle). This capacity drops with more passengers (2,000 pound capacity with 3 to 4 people and 1,500 pounds with 5 to 7 people). I do recommend also verifying this information in your copy of the manual or by checking with your...
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    Image 1 for
  • 4-Way Wiring Harness for 2018 Dodge Journey GT With LED Taillights and Incandescent Turn Signal
    For your 2018 Dodge Journey I recommend the # 118536 Tekonsha T-One Wiring Harness with 4-Pole Flat Trailer Connector. This wiring harness is a custom fit for your 2018 Journey with LED taillights. It has a quick and easy installation and plugs in to existing wiring. I spoke with Tekonsha and they said that this would be the correct wiring harness even though your turn signal uses an incandescent bulb. I have attached an installation video of the wiring harness on a 2018 Journey for...
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  • Towing Capacity of 2017 Dodge Journey and Parts Needed to Pull 1,900 Pound Trailer
    I tracked down an online version of the owner's manual for your 2017 Dodge Journey and if it's equipped with the 3.6L V6 engine it listed a towing capacity of up to 2,500 pounds. This max capacity is assuming there is only 1 to 2 persons in the vehicle. As the inhabitants grow the capacity decreases as follows: 3 to 4 persons - 2,000 pound towing capacity 5 to 7 persons - 1,500 pound towing capacity With this in mind your Dodge Journey is capable of towing a 1,900 pound trailer as...
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