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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

Item # 118802
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Custom Fit Vehicle Wiring

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Tekonsha Trailer Hitch Wiring - 118802
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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. 1-800-496-5010 to order Tekonsha custom fit vehicle wiring part number 118802 or order online at 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 (51)
  • Q & A (0)
  • Photos
  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118802

  • 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 behind tail lights
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes ModuLite power module that 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: 5 amps per circuit
    • Tail lights: 7.5 amps per circuit
  • 1-Year limited warranty


This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. You will have to remove the tail light assemblies to access this harness.

T-One Connection Location Points Behind Tail Lights

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 in the spare tire compartment.

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 Power Module

A ModuLite power module is built into this T-One connector. 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.

118802 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite

Installation Details 118802 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 - 118802

Average Customer Rating:  5.0 out of 5 stars   (51 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.


Great product excellent installation videos. Went in almost as easy as the video made it seem. Definitely a little on the heavy side to install alone but managed anyway.

Ford Escape

This was very easy to install, and after a year of service everything still works perfect! I installed it inside the rear hatch on my Ford Escape and run it out the hatch when I use it. This cuts down on the corrosion that happens during the harsh winter conditions in WNY


was easy to install but took some time because you have to run a power wire to front of car to battery


Easy to follow tutorial on line and clear instructions made it a quick easy install. Over all excellant product


Reasonable price. Complete kit with clear instructions. Great support.


works well good instructions.

2019 Ford Escape

My experience has been very good from day one when I first logged on to the etrailer web site. All products were clearly described and shown in photos and videos. The trailer hitch and wiring harness I ordered fit our 2019 Ford Escape perfectly. Was very satisfied with the products I purchased. The directional videos allowed the installations to go without a hitch. Purchase online went smoothly and delivery went as scheduled. Was also impressed with the follow through emails. Would definitely recommend to a friend. Thanks for the good service.

Ive purcased a hitch, wiring harness, ball, and receiver plugs for 2 different vehicles in the last year. Have been totally satisfied with ordering, shipping, and quality of products.
Dean - 10/30/2020


Instructions were provided but skip over the details, the video provided lots more detail, especially regarding removing the rear lights to make the connections, videos are excellent, and essential.


It worked good but the hitch was bent. So sad that I had to have to take it someplace to have it straightened out. Very poor packaging of the hitch but the wiring harness was good.


All was good except the wire harness box was crushed open.


I love doing business with e trailer, They are always very helpful and I can always know I'm getting the very best product on the market at the very best price!!!!!!!! Everyone is always very nice and knows the products when your asking questions and you get fast delivery every time when ordering!!!!!!!! I have ordered from e trailer many times and it's the only company that I order from for years, I have order from other companies before them and had a bad experience's but never with e trailer, I will always order from e trailer in the future as I have for the last five years!!!!!

Great, fit perfect.
Curtis - 08/29/2020

2019 Ford Escape

The Tekonsha wiring harness, item 118802, seems to be very well made. I installed it on our 2019 Ford Escape. The fit was good. It does take a little time to install if you go the extra mile to cover the wires with protective covering which I would suggest due to how close the wires will be to the exhaust and moving parts. The hardest part is getting the wire that goes to the battery positioned in a good spot. It took me about 2 hours to do the complete installation. This was my first time so someone who has experience with installing wiring harnesses could probably do it in a lot less time. After installation I tested it by connecting my trailer to the hitch and connecting the wiring harness to the trailer and everything worked just like it should. I would recommend this product.

2019 Ford Escape

Videos were very helpful, products as advertised and worked well. Very timely delivery of the products. Thanks


Fast & easy order and delivery.

2019 Ford Escape products are high quality. The instruction videos are very helpful--Great job!!


great product and at a good price !


Hitch and wiring harness work great. Easy install


Hitch installation was no problem! On in about an hour! Wining harness was a pain in the tail! The back part was easy. The wire to the battery was a pain to fish up to front but it works great!!!


Love love you guys awesome delivery and product again


Works as expected just take your time installing it


The Tekonsha harness is excellent. Installed easy. A+


I did it!! I installed it and I even got all of the right lights to light up on the tester. Good project. great instructional video.
If I can do it, anyone can do it.
Love saving money and knowing EXACTLY what was done and how.


very sturdy hitch,,,highly recommended


Great fit works works great

Show More Reviews

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

  • Trailer Wiring Recommendation for 2019 Ford Escape Titanium
    For your 2019 Ford Escape Titanium that came without the tow package the correct trailer wiring harness is the part # 118802. This is a custom fit kit that installs by plugging inline with the taillight connectors of your vehicle. The converter box of this kit is designed to interpret your taillight wiring and convert it to the correct 4-way wiring style.
    view full answer...
  • Trailer Wiring Recommendation for 2019 Ford Escape
    Yes, for your 2019 Ford Escape S the Tekonsha kit part # 118802 that you referenced is a confirmed fit. This installs easily by installing inline with the taillight connectors on the vehicle. It also has a very reliable converter box when compared to other options so I recommend it highly.
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  • Can Trailer Wiring Harness for 2019 Ford Escape be Connected to 12V Power in Rear Cargo Area
    The Tekonsha T-One Wiring Kit # 118802 is designed to bypass the OEM wiring circuits on your 2019 Ford Escape. Basically the trailer would pull power directly from your vehicle battery and the sections that tee into the connectors behind your tail lights are there to tell the converter when to send the signals along those circuits. Vehicle wiring systems are very expensive to repair and you don't want to mess with that due to a malfunction with your simpler trailer electrical system. If...
    view full answer...
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  • Does Installing Powered Taillight Converter on 2019 Ford Escape Require Connection to Battery
    The Tekonsha # 118802 T-One wiring harness requires both the inline connections between the vehicle wiring harnesses that feed the taillights and the taillight assemblies and the connection to the positive battery terminal. The connection at the taillights provides the switching information, while the actual power is drawn from the battery via the connection to the positive terminal. This started being done several years ago when the vehicle manufacturers starting using thinner gauge wire...
    view full answer...
  • No Turn Signals On Trailer After Installing 118802 on 2017 Escape SE
    The first step to troubleshooting the turn signals not working on your trailer is to check all of the grounds on both the trailer side and vehicle 4-pole flat part # 118802 to make sure they are ground to a clean bare metal surface. An insufficient ground is the culprit for most turn signal issues after a 4-pole flat installation. If your ground connections are okay, make sure the connects at the tail lights are properly seated together, not loose and the pins are not bent. If those...
    view full answer...
  • Wiring Harness Recommendation for 2019 Ford Escape Limited
    The best wiring harness for your 2019 Ford Escape is the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118802 . This wiring harness allows for easy installation since it plugs in behind your drivers side and passenger side tail lights and gives you a 4 pole harness to provide power for the lights on your trailer. The wired-in power module is going to reduce strain on your factory wiring system by drawing power from your car's battery system instead of drawing...
    view full answer...
  • Turn Signals Not Working After Installing Vehicle Wiring Harness On 2019 Ford Escape
    It sounds like the harness you installed on your friends 2019 Ford Escape was like the Tekonsha T-One # 118802. I do not recommend picking up power from the another source other than the battery as that is a feature that is created to protect the vehicle's harness from a short and could effect any warranty claims if a problem arises. It is weird that only the turn signals are not working. I would start with verifying that the connectors are full seated into the tail light harness, and...
    view full answer...
  • Troubleshooting No Turn Signals on Trailer with T-One Installed on 2017/2018 Ford Escape
    If the turn signals on your trailer aren't working after installing the T-One # 118802 on your 2018 Ford Escape it sounds like your trailer may have separate lighting which means the stop and turn circuit aren't combined like they are on your Escape. To remedy this you need the Converter # 118158 which takes your combined wiring and separates those functions to match your trailer. If the issue is something else please let me know and I can help you troubleshoot further.
    view full answer...
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  • Does etrailer Trailer Hitch for 2019 Ford Escape Allow Hands Free Lift Gate
    The Draw Tite part # e98866 is a fit for your 2019 Ford Escape Titanium with the foot activated lift gate. We've found that the lift gate function still works but you'll need to kick your foot to either side of the hitch opening instead. I attached an install video link for this for you to check out as well. If you were looking for trailer wiring as well the best option is the easy to install and very reliable part # 118802 which I attached an install video for as well.
    view full answer...
  • Does the etrailer Hitch E98866 Come With Mounting Hardware
    Yes. The etrailer Trailer Hitch Receiver # E98866 does come with everything you would need to install it, from the mounting hardware down to detailed, step by step instructions. If you've got some basic hand tools, you can likely install this yourself by following along with the installation video I've linked to this answer. If you'd rather not, you should be able to have any local auto repair shop install this for a fee. If you're going to be towing with this hitch you'll also need trailer...
    view full answer...
  • Trailer Hitch, Wiring and Ball Mount Recommendation for 2019 Ford Escape
    We have everything you'll need to tow your pop up with your 2019 Ford Escape. You need a hitch like the Class III # e98866 which is a confirmed fit for your vehicle, has plenty of towing capacity, and is mostly hidden as well. You will need trailer wiring as well to activate the blinkers, turn signals, and running lights of your vehicle as well which we offer that as # 118802. I attached install videos for both of these on similar Ford Escapes. Since you wanted to do some towing you might...
    view full answer...
  • Can Tekonsha Prodigy P3 Brake Controller Easily Move From RV to Different Tow Vehicle
    The Tekonsha Prodigy P3 Brake Controller # 90195 that you referenced is a great brake controller and can pretty easily be swapped from your RV to the Ford Escape when needed. Since both tow vehicles will require a hardwire installation (no plug-in adapter cords are available for either) you will just want to add a second pigtail harness # 20127 so you can unplug them from the controller itself when needed and have the plug ready to go on the other vehicle. If the brake output (blue) and...
    view full answer...
  • Does Draw-Tite Trailer Hitch 75758 Fit 2019 Ford Escape SE
    I checked with the manufacturer, and the Draw-Tite Trailer Hitch Receiver # 75758 does fit your 2019 Ford Escape SE, so long as your Ford does not have the factory Class II Towing Package. If you do have that towing package you will need Draw-Tite Trailer Hitch # 36524 instead, which is a smaller hitch with less capacity. Otherwise, the Draw-Tite # 75758 is a very sturdy hitch with a 2" receiver and 675 lb tongue weight capacity and 4,500 lb towing capacity. It does not require any type...
    view full answer...
  • CR-018 Skull Hitch Cover With LED Lights is Tripping Errors When Connected to a 2017 Ford Escape
    This is a pretty common occurrence with the Ford F-Series trucks, but can also pop up on their SUV lines as well. If you have an aftermarket wiring harness installed, like the Tekonsha # 118715, you will first need to check the ground connection. If this is not secured to bare metal with a solid, secure connection, it can cause all sorts of issues. From there you will need to test the ports on the 4 Flat with something like the # 40376. If the converter box on the # 118715 is malfunctioning,...
    view full answer...
  • Best Trailer Hitch for a 2019 Ford Escape
    The best trailer hitch for a 2019 Ford Escape is between the Draw-Tite Max-E-Loader Trailer Hitch Receiver part # 75758 and the Draw-Tite Max-Frame Trailer Hitch Receiver part # 75782. The Max-E-Loader and Max-Frame are both custom bolt-on options with a class III rating. The main difference between the two is installation and aesthetics. The Max-Frame which is what I recommend has a hidden cross tube meaning only the required receiver tube portion is shown therefore you will get the cleanest...
    view full answer...
    Image 1 for
  • Brake Controller and Wiring Recommendation for 2019 Ford Escape
    It is absolutely possible to add a wiring harness and brake controller to your 2019 Ford Escape, and there are a few parts you will need in order to do this, starting with a 4-way connector. For this, the best option is the T-One Vehicle Wiring Harness # 118802 because it is the most reliable harness with the highest maximum amperage for your Escape which means it offers the best protection against possible shorts. I've added a link to a video of it being installed on a '19 Escape for you...
    view full answer...
    Image 1 for
  • Can 2019 Ford Escape use a Roof Top Tent
    Since your 2019 Ford Escape is limited to 100 lbs on the roof, and there is no way to increase capacity, the only way you can use a tent system with the '19 Escape is with a trailer that has a tent on it. - 2-Person Tent: Yakima EasyRider Double Decker Trailer with SkyRise HD Tent # Y08129-3627 - 3-Person Tent: Yakima EasyRider Double Decker Trailer with SkyRise HD Tent # Y08129-3727 To use this with your 2019 Escape, you would need a hitch, wiring, and ball mount. For a hitch the...
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  • Parts Needed to Install 6-Pole Connector on 2019 Ford Escape to Charge Trailer Battery
    Yes, the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118802 is the correct trailer harness for your 2019 Ford Escape without a factory tow package. To convert this 4-Pole connector to a 4 and 6-Way round connector, I recommend wiring adapter # 37175. This way, you're not losing the standard 4-Pole plug, which may come in handy in the future. The two additional pins are for trailer brakes and 12V power. To wire the center pole on your vehicles 6-Way connector to...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Dustin K
Video by:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B
Employee Alexander C
Written by:
Alexander C
Employee David F
Test Fit:
David F

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