1. Custom Fit Vehicle Wiring
  2. Tekonsha
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  4. Trailer Hitch Wiring
  5. 4 Flat
  6. No Converter
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

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

Item # 118416
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Custom Fit Vehicle Wiring

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Tekonsha No Converter Custom Fit Vehicle Wiring - 118416
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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 - no cutting, splicing or tapping required. Call 800-298-8924 to order Tekonsha custom fit vehicle wiring part number 118416 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 (268)
  • Q & A (136)
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  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118416

  • Custom Fit
  • Trailer Hitch Wiring
  • Tekonsha
  • 4 Flat
  • No Converter

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 - no cutting, splicing or tapping required.


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 - no cutting or splicing of wires
    • Locate connection points behind driver's-side tail light
    • Plug in T-connector
  • Constructed of 16-gauge bonded wire
  • Comes with dust cap for 4-way flat connector


Specs:

  • Maximum amperage: 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-side tail light. You will have to remove the tail light assembly to access this harness.


T-One Connection Location Points Behind Tail Lights

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.



118416 Tow Ready T-1 T-Connector - 4 Wire

Installation Details 118416 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 - 118416

Average Customer Rating:  4.9 out of 5 stars   (268 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 - no cutting, splicing or tapping required.

- 118416
by:
2011 Jeep Wrangler

Order received a day after the estimated date. No problem, that's the USPS for you. Installed the harness. The video says about 5 minutes. They are close. The only issue that I had was difficulty finding a place to drill and attach the white ground wire. Basically a plug and play harness. I wish that I had ordered a mounting bracket. The one that is on my 2011 Jeep Wrangler Unlimited is a bit large and the plug is too small to stay put once it is in the bracket. Will manufacture something to hold the plug so that it stays in place. 71794



- 118416
by:

Ordered a trailer wiring harness for my vehicle. I got exactly the right wiring kit with easy to follow instructions. The wiring kit installed easily and worked perfectly for my application. 237576


Comments
After a year in service, the product is still performing perfectly! Thanks for a great product!
Steve J - 02/10/2017

22439

- 118416
by:

Easy install and works great. 718930



- 118416
by:
2021 Jeep Wrangler Unlimited

Good quality easy to install 913164



- 118416
by:
2016 Jeep Wrangler

Easy to install! Fast shipping! Works as described! 902928



- 118416
by:
2018 Jeep JK Wrangler

Very easy to install, I reccomend. 899923



- 118416
by:

Great product and easy install. 892493



- 118416
by:

great service as usual. thanks 892269



- 118416
by:

Very easy to install !! 883916



- 118416
by:

Easy installed works great 876341



- 118416
by:

Great harness it did what I wanted it to. I was putting a 2nd set of break lights on my Jeep Wrangler with reverse. As you can see from the pictures the install went well and they look great. Customer service was very knowledgeable and helpful 874873



- 118416
by:

Placed my order and received it two days later and it was exactly what it said it was and easy to install 868964



- 118416
by:

Fast, great communication - great produ ct. 867864



- 118416
by:

I have not installed this yet, but it looks to be excellent quality and I received it promptly. 866159



- 118416
by:

Great product, fits perfectly! Installed and towing my trailer in less than 15 minutes. 848165



- 118416
by:

Works as expected 846218



- 118416
by:
2016 Jeep Wrangler

Haven’t installed the product yet but looks like the right fit and simple to install. It’s always a pleasure dealing with this company . Always someone to talk to with questions or concerns and always a positive attitude . Can’t wait to do business again ! 830728



- 118416
by:
2010 Jeep Wrangler Unlimited

Awesome customer service, to make sure I got the perfect product for the job I needed to get completed. Thank You so much. 827525



- 118416
by:

Hi Carol! I will say you guys run a top shelf business! Great service, prompt delivery, follow up is exceptional, product video's and descriptions are spot on and helpful! Very impressed and will continue to promote your business:) Also enjoy the fact that my email account is not bombarded with emails and announcements! Time is precious and I respect anyone that respects my space! Thank you!! Keep up the great service and be safe! 818352



- 118416
by:

Very easy install and works perfectly 807072



- 118416
by:

EXCELLENT in all respects. Lightning fast shipping. Very attentive to questions. HIGHLY recommend & Will be back myself for future needs! 806839



- 118416
by:

Just installed. Very easy to install. 800200



- 118416
by:

Wiring harness was a perfect fit. Easy to install. Took all of 15 minutes from start to finish. 800036



- 118416
by:
2011 Jeep Wrangler

10 minutes to hook up easy peasy . 796192



- 118416
by:

This product is of high quality and was super easy to install with the detailed instructions included. I was very please with the fast delivery as well. 791079


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Show More Reviews

Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

  • Recommended 4-Way Trailer Wiring Harness for 2019 Jeep Wrangler Unlimited
    The correct Tekonsha 4-Way harness for your 2019 Jeep Wrangler Unlimited is the T-One # 118786. This will plug right into factory ports behind the driver and passenger side tail lights. The included powered converter then needs to be ran up to the Jeep's battery to safeguard the vehicle's wiring and ensure enough power gets back to the trailer lights. This will provide you with just the needed 4-Way connector to activate the trailer's basic signal lights (without brake or 12V power functions)....
    view full answer...
  • Recommended Brake Controller and Wiring for 2017 Jeep Wrangler Unlimited
    To add a brake controller to your 2017 Jeep Wrangler Unlimited you will need to start with installing a 4-way trailer connector, the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118416; I have added a link to a video of this harness being installed on '17 Wrangler Unlimited for you to check out. You will also need the Universal Installation Kit for Trailer Brake Controller # ETBC7, which will give you a 7- and 4-way trailer connector, circuit breakers and the rest...
    view full answer...
  • 2013 Jeep Wrangler Unlimited 5-Way Trailer Wiring Harness Recommendation
    If all you need is a 5-way for your 2013 Jeep Wrangler Unlimited what you'll need is a custom fit 4-way like the Tekonsha kit part # 118416 and then to convert it to a 5-way part # 20036 and you'd be set. The part # 118416 installs by attaching inline with the taillight connectors of the Jeep and then the # 20036 plugs into the 4-way and allows you to run the 5th wire to the reverse light circuit of your vehicle and you have a functioning 5-way.
    view full answer...
  • Parts Needed to Install 7-Way in a 2016 Jeep Wrangler Unlimited
    You would first need to install a 4-way on your 2016 Jeep Wrangler Unlimited. For that you would need the part # 118416 which is a confirmed fit. I attached an install video for this for you to check out as well. Now if your trailer does not have brakes all you would need is the part # 37185 as an adapter to convert the 4-way to a 7-way. If you do have trailer brakes you would need the # ETBC7 instead of the # 37185 and a brake controller. This kit comes with everything needed to...
    view full answer...
  • Trailer Brake Controller Installation on 2008 Jeep Wrangler Unlimited
    Some vehicles will have a factory equipped connector under the dash that makes installing a brake controller a plug and play operation, however Jeep didn't provide that feature on your 2008 Unlimited. You can still install a brake controller pretty easily. Since you already have a brake controller and a functional 4-pole on your 2008 Wrangler Unlimited, all you'll need is our Brake Controller Installation Kit, part # ETBC7. The kit includes just about everything needed to install the...
    view full answer...
  • Is a 4-Way Trailer Wiring Harness Mounting Bracket Recommended for a 2007 Jeep Wrangler
    It is not required to have a mounting bracket for the 4-Way end of trailer wiring harness # 118416, but we do recommend it for a secure and professional appearance. You can use bracket # 18144 with either the short extension # 18140, or the long extension # 18136. I have included a link to a video that shows, in part, the installation of the mounting bracket.
    view full answer...
  • Getting Trailer Wiring Harness 118416 to Work with a 2017 Jeep Wrangler Right-Hand Drive Model
    For some reason the right-hand drive version of the 2017 Jeep Wrangler Unlimited doesn't have the same tail light wiring as left-hand drive models. What you will have to do is plug in wiring harness # 118416 to one side or the other. On the side it is not plugged into use a circuit tester such as # 40376 to locate the wire that carries the turn signal and brake light function. Splice a wire into that wire on the vehicle using a quick splice connector such as # SWC501746-1 and wire # 16-1-1...
    view full answer...
  • Installing Trailer Wiring Harness on 2018 Jeep JL Wrangler Thats Also Wired for Flat Towing
    You can absolutely install the Tekonsha T-One Vehicle Wiring Harness # 118786 (which is indeed the correct harness for your 2018 Jeep JL Wrangler) on your vehicle that already has a Blue Ox Diode Kit installed for flat towing. The two kits won't interfere with each other and won't cause any type of issue with regards to the electrical system on the Jeep. When installing the T-One Harness you will follow the attached instructions just like normal, connecting the plugs to the factory...
    view full answer...
  • 7-way and 4-Way Recommendation for 2012 Jeep Wrangler
    You will need to start with a 4-way for your 2012 Jeep Wrangler. For that you would want the # 118416. Now if your trailer does not have brakes all you would need is the part # 37185 as an adapter to convert the 4-way to a 7-way. If you do have trailer brakes you would need the # ETBC7 instead of the # 37185 and a brake controller. This kit comes with everything needed to wire up the 7-way and install a brake controller. For a brake controller I would recommend the Prodigy P2...
    view full answer...
  • Recommended 7-Way And 4-Way Wiring For 2017 Jeep Wrangler Unlimited Sport S
    For your 2017 Jeep Wrangler Unlimited Sport S, I recommend you start with the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118416. The connection points for this adapter are behind the driver's side tail lights. Then you will want to use the 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring - Vehicle End # HM40975-11998 to hardwire to that 4-way. Next, you will want to use the Draw-Tite Wiring Kit for 2, 4, 6, and 8 Brake Electric Trailer...
    view full answer...
  • Recommended Trailer Wiring Harness for 2017 Jeep Wrangler without Tow Package
    Both the Tekonsha T-One Vehicle Wiring Harness # 118416 and the Curt T-Connector Harness # C55124 referenced in your question are confirmed to fit your 2017 Jeep Wrangler without the tow package. These will both install in the same exact manner, plugging directly into existing ports located behind the driver side tail light on your vehicle, and will provide a 4-way flat for connecting with a trailer. The only difference between these two products is simply the manufacturer. I like to...
    view full answer...
  • Recommended Brake Controller and 7-Way for 2017 Jeep Wrangler Unlimited
    We have everything you need to get your 2017 Jeep Wrangler Unlimited set up so that it can pull your trailer that is equipped with electric brakes. You will need to start by installing a 4-Way trailer connector. For this I recommend the Tekonsha T-One Vehicle Wiring Harness # 118416. This custom harness will plug right into the factory port behind the driver's side tail light. Tekonsha is well known for producing reliable and long-lasting wiring products. I have attached an installation...
    view full answer...
  • Can Tekonsha Harness and Hopkins Towed Vehicle Wiring Kit be Used on 2017 Jeep Wrangler Unlimited
    The Tekonsha T-One Vehicle Wiring Harness # 118416 referenced in your question, which is confirmed to fit your 2017 Jeep Wrangler Unlimited, will indeed work in conjuction with the Hopkins Custom Tail Light Wiring Kit # HM56200 that you already have installed. The two harnesses will simply plug into one another and then "T" into the built-in ports behind the Jeep's tail lights. In terms of functionality, there is absolutely no issue with this and both wiring harnesses will work great. The...
    view full answer...
  • Can Third Brake Light Be Wired In With Trailer Harness On 2015 Jeep Wrangler
    The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # 118416 is a fit for a 2015 Jeep Wrangler. If you would like to use this to wire in a some type of third brake light then you can do so just note that the stop and turn signals are combined on the same wire so you'd need to separate them with part # PP20-702 or else the light would flash with the turn signals. In regards to the reverse light circuit, this is not present on most trailer wiring harnesses so you'd...
    view full answer...
  • Recommended Wiring for 7-Way Trailer Connection on 2017 Jeep Wrangler Rubicon Recon
    I'm happy to assist you with the wiring for your 2017 Jeep Wrangler Unlimited. I recommend you start with the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118416 to get the 4-way you need for the next step. This will install to the factory wiring behind the driver's side tail light. Next, you will need the Universal Brake Controller Wiring Kit # ETBC7. This kit will give you the connector to convert your 4-way and also give you the other wiring, circuit breakers,...
    view full answer...
  • How Long Does it Take to Install Trailer Wiring Harness # 118416
    The install for the trailer wiring harness part # 118416 is pretty quick and painless. If you check out the install video I attached you can see how quickly our installers got through it. If you are trying to make sure you set aside enough time though I'd give yourself an hour to get through it as the first time you install anything typically takes a bit longer. Most likely you'd get it knocked out in half an hour though.
    view full answer...
  • Parts Needed to Install a 7-Way on a 2012 Jeep Wrangler
    You are correct that you would need to start with a 4-way on your 2012 Jeep Wrangler to eventually install a 7-way. For that you would need the # 118416. Now if your trailer does not have brakes all you would need is the part # 37185 as an adapter to convert the 4-way to a 7-way. If you do have trailer brakes you would need the # ETBC7 instead of the # 37185 and a brake controller. This kit comes with everything needed to wire up the 7-way and install a brake controller. For a...
    view full answer...
  • Troubleshooting Trailer Wiring Install on 2010 Jeep Wrangler Unlimited Where Only One Side Worked
    First thing you should do at this point is test the 4-way of the wiring harness with a circuit tester part # PTW2993 for voltage on all of the right pins when the taillight signals are being applied. Just like in the video I attached. If the voltage checks out there but the trailer lights still don't function right then the problem is on the trailer wiring. That would mean that problem is either due to a ground issue or a short issue. Make sure that the trailer side connector are...
    view full answer...
  • Ground Wire of Tow Ready # 118416 Versus Equivalent MOPAR Part
    It appears that the OEM MOPAR part draws its ground connection through the connection with the factory wiring harness feeding the taillight assembly. Rather than depending on getting the ground connection through the factory harness, the Tow Ready harness simply does the same thing by grounding directly to the vehicle chassis. Either the OE or the Tow Ready harness would work just fine for you, both will provide the same function. Price-wise, from what I say online, the Mopar harness...
    view full answer...
  • Recommendation for Adding 7-Way and 4-Way Trailer Connector to a 2013 Jeep Rubicon without Tow Pkg
    Without the factory tow package, there is not a 7-way connection that plugs right in with all the 7-way functions. You will need to install a 4-way flat connector like # 118416 first. This harness installs to the factory wiring located behind the driver's side tail light. I've attached a video to assist. Then if you don't want all the 7-way functions, but need the 7 way adapter, you can simply use the Hopkins Endurance Multi-Tow 4-Way Flat to 7-Way RV Trailer Adapter w/ 4-Way Vehicle...
    view full answer...
  • Installing a Brake Controller on a 2008 Jeep Wrangler
    Your brake controller will need to be hardwired. We offer an Brake Controller Install Kit, part # ETBC6 for a 6-way connector, or part # ETBC7 for a 7-way. The install kit includes everything necessary for installing the controller, except for the T-1 connector needed to tap into the Jeeps lighting circuits. We have a Brake Controller Install Guide on the website that you might find helpful. I will provide a link below.
    view full answer...
  • How to Install Trailer Wiring 6-Way on a 2017 Jeep Wrangler Unlimited
    You'd need to start with a 4-way. For a 4-way confirmed as a fit for your 2017 Jeep Wrangler Unlimited you'd want the part # 118416. If your trailer has a 6-way round connector the correct adapter you would need is the part # 30637. Your vehicle 4-way will plug directly into the 4-way of the adapter and then the taillight signals will be converted to a 6-way.
    view full answer...
  • Wiring Harness Not Functioning Properly on 2014 Jeep Wrangler Unlimited with Right Hand Drive
    Wiring for standard domestic production vehicles may differ from that in vehicles produced for markets outside the U.S. If your Jeep Wrangler Unlimited was produced for another market its wiring could be different and this could explain the issue with the lack of power to the right-hand turn signals using wiring harnesses you've tried. Several of the 4-pole harnesses we offer for your 2014 Wrangler Unlimited, part # 118416 from Tow Ready and # C55124 from Curt, are noted as possibly...
    view full answer...
  • 2018 Jeep Wrangler Unlimited Trailer Wiring Recommendation
    If your 2018 Jeep Wrangler JK has the factory tow package it would have a square connector at the rear of it for attaching trailer wiring to. For that we have the Pollak 7 and 4-way kit part # HM40975-11933 which will plug right in and be functional. The 4-way kit part # 118416 that you referenced is for versions of the vehicle that do not have the tow package, but it can fit on either style of vehicle as it installs by plugging in line with the taillight connectors on the vehicle.
    view full answer...
  • Correct Trailer Wiring Harness for 2018 Jeep Wrangler JL Unlimited
    Tekonsha confirms that the correct T-One wiring harness for a 2018 Wrangler Unlimited JL is part # 118786. The # 118416 harness you'd looked at is a fit for the JK model, and wouldn't work with your JL, as 2018 was a split model year for the Wrangler where Jeep produced both the first model year of the JL and the final model year of the JK. I've linked to an installation video for you.
    view full answer...
  • Running a T-One Vehicle Wiring Harness to the Outside of Jeep
    It is an easy process to install the wiring harness; I will quickly go over the steps, but also attach the instructions in a PDF file for your convenience. You are correct with assuming you use the taillights. Start on the driver's side, remove taillight, and plug harness in; next ground the harness with the white wire. Route the T-Connector end with the 4-flat down through the taillight pocket between bumper and body and towards the center of the bumper. Secure remainder of harness...
    view full answer...
  • Comparing Curt T-Connector Wiring Harness and Tow Ready T-One Wiring Harness for 2011 Wrangler
    The only difference between the Curt T-Connector Wiring Harness, # C55124, and the Tow Ready T-One Vehicle Wiring Harness, # 118416, is that they are made by two different manufacturers. They are essentially the same exact wiring harness coming from two different companies. Both Tow Ready and Curt are reputable companies so you will not be sacrificing quality with either harness. When deciding which harness to purchase, I would go with the least expensive option to save money. I have...
    view full answer...
  • Availability of Wiring Harness that Will Use 2010 Jeep Wrangler Lights while in Tow
    You are looking for a different kit of wiring kit than part # 118416. You are looking for something like part # RM-154 or part # 38955. These are diode wiring kits that will allow the signal from the motor home to activate the Jeep tail lights, but not send power all the way up the Jeep circuits. I have included a link to a video of part RM-154 being installed on a 2006 Liberty so you can see what is involved.
    view full answer...
  • 7-Way, Weight Distribution and Brake Controller Recommendation for 2013 Jeep Wrangler Unlimited
    You will need to start with a 4-way (if you do not have one). For that you would want the # 118416 which is a confirmed fit for your 2013 Jeep Wrangler Unlimited. From there you would need to convert the 4-way to a 7-way so that you can install the brake controller. For that you will want the Brake Controller Install Kit and 7-Way Adapter part # ETBC7. I attached installation instructions and an install video for this product as well. This will also complete the wiring for a functional...
    view full answer...
  • Converter Required to Add Additional Brake Lights to 2017 Jeep Wrangler Unlimited
    I can help you pick out the types of products you'd need to accomplish what you need, but you'll have to find out exact correct way to install everything per you setup. The best solution is going to be to use a converter like the # 118158 to separate out your vehicle turn taillight wiring so that you have dedicated stop light circuit. Since you want to add stoplights you'd have to use the wires of this kit to Tee into the wiring of your vehicle so that it can have it's taillights...
    view full answer...

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