T-One Vehicle Wiring Harness with 4-Pole Connector

T-One Vehicle Wiring Harness with 4-Pole Connector

Item # 118779

lowest price pledge

Retail:$102.53

Our Price: $67.60

You Save: 34%
Custom Fit Vehicle Wiring

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Orders above $99 qualify for Free Shipping

Shipping Weight: 1.78 lbs

Quantity: 
In Stock, Ships Today
Tekonsha Trailer Hitch Wiring - 118779
zoom in icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
Please enter a valid email address.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

pop out icon replay 360 icon
horizontal rotate icon

Product Images

In Use/Installed

Customer Photos


  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • Tekonsha
  • Powered 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. Powered ModuLite reduces strain on wiring system. Call 800-298-8924 to order Tekonsha custom fit vehicle wiring part number 118779 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 Connector. Custom Fit Vehicle Wiring reviews from real customers.


  • All Info
  • Reviews (15)
  • Q & A (19)
  • Videos (2)
  • Photos
  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118779

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 power converter to ensure that your vehicle's wiring matches that of your trailer
    • Powered module connects to 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 lights: 5 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-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 beneath and to the center of the vehicle. A mounting bracket (sold separately) is recommended to keep the connection 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.



118779 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite



118779 Installation InstructionsInstallation Details 118779 Installation instructions

This Product Fits The Following Vehicles

2019 - 2019 Jeep Cherokee

2019 - 2019 Jeep Cherokee without factory tow package



California residents: click here


Video of T-One Vehicle Wiring Harness with 4-Pole Connector


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Tekonsha Custom Fit Vehicle Wiring - Trailer Hitch Wiring - 118779 Review

Speaker 1: Today we're going to take a look at the T-1 vehicle wiring harness with the four way flat trailer connector. Now this is a custom fit part. It is designed to fit the 2019 Jeep Cherokee, and on a custom fit part I always like to recommend inaudible 00:00:13 our website, use our fit guide, put in your year and model vehicle, and it'll show you if this will work for your application. Now this part will provide a four way flat trailer connector at the back of your vehicle to power your trailer's signal lights. It is compatible with five pole, six pole, and seven pole adapters that we do sell separately. This whole harness connects very quickly and easily.Basically just locate your connection point, which will be behind the taillights on your vehicle.

Take these T-connectors. Plug in T-connectors, one on each side. One for the driver's side, one for the passenger's side. You'll ground your white wire, and then your power wire you just run to your vehicle's battery. Now it does include this ModuLite power converter, this black box here.

This is to ensure that your vehicle's wiring will match that of your trailer. It is a power module so you will connect it to your vehicle's battery, and that's to avoid overloading your vehicle's electrical system.Now the wire that the four way's attached to is the 16 gauge bonded wire. If you notice the four way has this nice integrated dust cover, that when you're not plugged into your trailer you can just put a cover over your terminals. It protects them from any damage or from the elements. Now a few specs on this harness.

The maximum amperage on the stop and turn light circuits is five amps per circuit. On the taillights it's 7.5 amps per circuit. Now it does come with everything shown here on the table.A nice set of detailed instructions that'll describe how to install it with pictures. But basically how you install it, what you want to do again is go to the rear of your vehicle, locate behind your taillights, and you want to start with the driver's side. You'll take this T-connector that has the yellow wire in it.

That's for the driver's side. You unplug your harness from your taillights. Plug this in between there, T-connector, and then you'll take the other harness that's for the passenger's side, has the green wire in it, run that over to the passenger's side. Has a length of wire here. Once you get over there, same way. Plug this in behind the taillights. Once they're all plugged in, this ModuLite you do want to attach this to a good flat surface so it doesn't bounce around. They do have a bracket on it with a hole in it. You can put a screw in there to hold it in. They do include some double face tape you could use also.Once that's attached down, take your bonded wire that the four way's attached to, run that out the back. And then your last two wires you want to connect to the ground wire. The white wire has an eyelet on it. Connect that to a good clean ground that's nearby. If there's not one nearby, they do give you a grounding screw that you can make your own ground. And then the last wire will be your black power wire. This'll run to your vehicle's battery. So what you'll want to do is run this . You don't want to run directly to the battery. You want to run it through the fuse holder. So they give you some connectors that you'll connect the power wire to. Connect it to one end, and then the other end.What you'll do is take the eyelet, put that on there, and this is what'll connect to the vehicle's battery. Once that's all connected, pop open your fuse holder, take your 15 amp fuse, install it in there, close it, and your harness is all ready to go. Now they do give you some extra cable ties to take up any slack in the wiring. But that should do it for the review on the T-1 vehicle wiring harness with the four-way flat trailer connector.


Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Connector - 118779

Average Customer Rating:  4.9 out of 5 stars   (14 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.

- 118779
by:

Very easy and quick to install. I removed the lower bumper shroud and nothing more. Fits perfectly around the muffler and required no cutting of anything. 633150



- 118779
by:
2019 Jeep Cherokee

Installation was easy did it by myself wiring went well too. 2019 Jeep Cherokee 546377



- 118779
by:
2019 Jeep Cherokee

The product arrived in a timely manner and the install was a breeze with the aid of online videos. 553029



- 118779
by:

Working with etrailer was a breeze, and getting the best/exact hardware and advice for my trailer needs, wiring requirements and solutions was 100% on point. It was a great help to have the exact videos and background information about installation, best methods and things to look out for.. during my hitch setup! They are heads and shoulders above all others in support, products, and service! A+ 717131



- 118779
by:

I AM VERY HAPPY WITH THE PRODUCT AND EASE OF INSTALL. ALSO, THE STAFF THAT WAS HELPING ME, KNEW WHAT I WAS LOOKING FOR AND HAD NO DOUBT I'D BE ANOTHER SATISFIED CUSTOMER. THANKS A BUNCH DAVE B. ..... 714458



- 118779
by:

A very easy install, especially if you have a hydraulic lift. Without a lift, you'll crawl around on the ground and reach for a few Advil tablets the next day! I hid and protected the + wire by unbolting the escutcheon that covers the underside of the car. If you haven't already undercoated your vehicle, I recommend having it done it AFTER you install the wiring. A freshly undercoated car is a mess to install anything on especially if it involves contact with the underside of the vehicle. For a fish, I used a simple strand of nylon cord with a small nut on the end...it's a straight run to the underside of the car and gravity makes for a good companion. I removed the 4 bolts that attach the plastic bumper to the underside of the body when it came time to hide the wires connecting the left side to the right side (makes for an easy and attractive installation). 698009



- 118779
by:

Great products, easy to follow videos, super helpful staff Thank you Ashley for your help with the order. 696276



- 118779
by:

Went in easy. Video was very helpful. Haven't used it yet. 693896



- 118779
by:
2019 Jeep Cherokee

Everything went well till I ran the wires to the passenger side the red wire was not as long as the green. Did not have enough to get the wires up to plug them into the light that is the only complaint other than that they work fine 656269



- 118779
by:
2019 Jeep Cherokee

The wiring harness I bought for my 2019 jeep Cherokee fit perfectly. The hardware package had everything needed to do the job .good product. 651818



- 118779
by:

As always E Trailer has exceptional service and fast Delivery. 643628



- 118779
by:

Easy to install for 66 year old handicap guy. It's the getting up and down off the concrete. 637996



- 118779
by:
2019 Jeep Cherokee

The wireing trailer hook-up for my 2019 jeep cherokee ,item #18779 works perfectly! The instructional is excellent. If I need another product, I know where to go. Thank you e-trailer! You saved me about $200. 637148



- 118779
by:
2019 Jeep Cherokee

The wiring harness worked perfect on my 2019 Jeep Cherokee Latitude Plus. 580115



- 118779
by:

Item works great fast shipping. 574486


19
19

Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

Do you have a question about this Custom Fit Vehicle Wiring?


  • Comparing Curt Class III Hitches C13395 & C13171 for 2019 Jeep Cherokee Towing Teardrop Trailer
  • The two Curt Class III hitches made for your 2019 Cherokee, parts # C13395 and # C13171, differ primarily in their installed appearance. Hitch # C13171 will install such that its main cross tube is visible under the bumper cover while model # C13395 has a concealed cross tube that is more hidden. If you refer to the two linked photos you can see the difference; the blue vehicle has visible hitch # C13171 and the red one has the concealed hitch # C13395. The difference in weight ratings...
    view full answer...

  • Trailer Hitch and Wiring Recommendation for 2019 Jeep Cherokee Latitude
  • The Draw Tite trailer hitch part # 75998 is a confirmed fit for your 2019 Jeep Cherokee Latitude and would be a great choice I recommend. It has a 2 inch opening which means it has great towing capacities at 5,000 lb towing weight and is the size that most hitch accessories are made for. It also has only the hitch opening visible which gives it a more concealed look. See attached picture. For trailer wiring then you'd want then the T-One kit part # 118779 which is a confirmed fit as...
    view full answer...

  • Hitch and Wiring for 2019 Jeep Cherokee Latitude Plus
  • Curt 2-inch hitch # C13171 is a confirmed fit on the 2019 Jeep Cherokee Latitude and also on the Cherokee Latitude Plus. An installation video showing a 2017 Cherokee is linked for you, along with the written instructions. I checked directly with Curt to confirm this fit. If you also need a 4-pole wiring harness top power trailer lights the correct it is # 118779.
    view full answer...

  • Custom 4-Pole Wiring Harness for 2019 Jeep Cherokee
  • Curt 4-pole wiring harness # C56406 and the similar Tekonsha # 118779 will work fine on a 2019 Jeep Cherokee with or without the factory tow package being present. Both of these custom-fit kits plug in to the wiring at the tail lights and they will function correctly either way since they are wired independently of any tow package wiring. I recommend the Tekonsha kit because in our experience their wiring products are the most reliable. These harnesses feature a powered tail light converter...
    view full answer...

  • Hidden Trailer Hitch, Wiring, and Ball Mount Kit for a 2019 Jeep Cherokee
  • We have exactly what you need! The Curt Trailer Hitch Receiver # C13395 is a Class III trailer hitch with a 2" receiver that is designed so that the receiver is the only portion that is visible (see attached picture). Then for wiring I highly recommend the Tekonsha T-One # 118779 as we have found the Tekonsha wiring products to be the most reliable. This tees into connectors behind your taillights and then draws power for the trailer lights directly from the battery on your 2019 Jeep...
    view full answer...

  • Trailer Hitch and Wiring for a 2019 Jeep Cherokee Trailhawk without Factory Tow Package
  • For your 2019 Jeep Cherokee Trailhawk I recommend the Curt Class III trailer hitch # C13395. This trailer hitch has a 2 inch receiver so it is compatible with many accessories. But the best thing about it is that once installed only the receiver is visible. I have included a link to the installation details for you to view. For wiring you can use # 118779 which is designed for models that do not have the factory tow package. This harness will provide you with a 4-Way flat connector at...
    view full answer...

  • Recommended Trailer Hitch For 2019 Jeep Cherokee
  • According to my contact at Curt the Curt Class III Receiver Hitch # C13171 will fit the 2019 Jeep Cherokee. This fully welded trailer hitch receiver bolts onto your vehicle's frame with no welding or drilling required. If you do not have a 4-way to control and allow the basic hookup of the three lighting functions (running, turn, and brake lights) if towing a trailer, the T-One Vehicle Wiring Harness with 4-Pole Connector # 118779 is recommended. The T-One connector plugs into your...
    view full answer...

  • Trailer Hitch Recommendation for a 2019 Jeep Cherokee
  • Yes, the Draw-Tite trailer hitch, part # 75998, does fit your 2019 Jeep Cherokee. The installation is basically the same as the 2018 model so I've linked the video you mentioned. The wiring harness that fits is part # 118779. I've also linked a couple of articels you might find helpful. As well as some links to our selections of other parts you might need to tow with your Jeep.
    view full answer...

  • Trailer Hitch Fit for 2019 Jeep Cherokee Limited 4x4 with Turbo Engine
  • The Draw-Tite Max-Frame Trailer Hitch Receiver # 75998 is a fit for your 2019 Jeep Cherokee Limited 4x4 with the turbo engine. I've attached the installation details for the fascia trimming required with this installation. I've attached a couple photos to assist. If you will be towing of using a hitch mounted accessory with lights, I recommend the T-One Vehicle Wiring Harness with 4-Pole Connector # 118779 which is also a confirmed fit. If you need a ball mount, I recommend the...
    view full answer...

  • Trailer Hitch and Wiring for a 2019 Jeep Cherokee Trailhawk
  • Yes! Curt trailer hitch # C13171 is indeed listed as a fit for your 2010 Jeep Cherokee Trailhawk. I have linked a video showing an example installation for you. This hitch is a great option for a bike rack. The 2 inch receiver will afford you many options if you do not already have a bike rack. If you need a bike rack recommendation just let me know how many bikes you will need to carry. If you do plan on towing in the future I recommend etrailer ball mount kit # 989900. It comes...
    view full answer...

  • Does Curt Hitch C13171 Installation on 2019 Jeep Cherokee Limited Require Cutting Rear Fascia
  • We have three 2-inch hitches for the 2019 Jeep Cherokee but one in particular, Curt # C13171, will NOT require trimming of the Limited's rear fascia trim panel. This hitch also installs without drilling on the Limited. I spoke to my technical contact at Curt who confirmed that they just recently did an install of this hitch on your exact vehicle and no permanent modifications are necessary! Apart from bolting the hitch on the only steps required are to temporarily loosen some underbody...
    view full answer...

  • Recommended Trailer Hitch for 2019 Jeep Cherokee
  • For your 2019 Jeep Cherokee I recommend the Curt Class III Receiver Hitch # C13395 for a couple of reasons. I really like the hidden design on this particular hitch that allows for only receiver portion to be visible from the rear of the vehicle. This makes for a more sleek, OEM appearance with the hitch installed. I have also attached an image that shows this. In addition to its hidden design this Class III hitch is also made right here in the USA. I have attached the complete installation...
    view full answer...

  • Parts Needed to Tow a Trailer with 2019 Jeep Cherokee
  • If you are wanting to tow a trailer with your 2019 Jeep Cherokee, you will need a trailer hitch, wiring harness, and a ball mount/hitch ball combination. Starting with the trailer hitch, I recommend the Curt Class III Trailer Hitch # C13171. This Class III hitch is confirmed to fit your Jeep Cherokee that goes into 2 wheel drive and will use existing holes in its frame for a no-drill installation. It will provide you with a 2 inch receiver and it features a 5,000 pound towing weight...
    view full answer...

  • Aftermarket Trailer Wiring Harness for a 2019 Jeep Cherokee
  • For your 2019 Jeep Cherokee, the T-One Vehicle Wiring Harness part # 118779 is a confirmed fit and will work for you. This is a brand new wiring harness that was developed specifically for the 2019 model year and that is all it will fit. This is not an OEM harness like something you would find in a dealer catalog as it is an aftermarket part that is supplied and test fit by third party manufacturers such as Tekonsha. In regards to the activation of the tow package wiring, that will...
    view full answer...

  • Will Installation of a Trailer Hitch and Wiring Void Warranty on a 2019 Jeep Cherokee Latitude
  • Installing a trailer hitch like the recommended Curt # C13395 and wiring like the T-One # 118779 that you referenced will not void the warranty on your 2019 Jeep Cherokee Latitude unless the problem was the direct result of the installation. This is covered under the Federal Magnuson-Moss Warranty Act.
    view full answer...

  • Towing Capacity and Trailer Hitch Recommendation for 2019 Jeep Cherokee
  • I took a look at the online copy of the owner's manual for a 2019 Jeep Cherokee and no matter what engine you have if you do NOT have the Trailer Tow Package the maximum trailer weight you can tow is 2,000 lbs. If you DO have the Trailer Tow Package and have a 2.0L engine your capacity is 4,000 lbs and if you have a 3.2L your capacity is 4,500 lbs. The trailer hitch I highly recommend for your '19 Jeep Cherokee is the Draw-Tite Trailer Hitch # 75998 because it has a concealed crosstube...
    view full answer...

  • Will Installing an After Market Wiring Harness Void Any Parts of My Warranty on a 2019 Jeep Cherokee
  • If you splice into factory wiring that can be an issue with warranty, but if you use an aftermarket harness like the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Connector # 118779 on your 2019 Jeep Cherokee you will be fine. The harnesses like this that don't alter the factory equipment in any way cannot void your warranty. You will be protected by the Magnuson–Moss Warranty Act. This act states, in part, that unless the installation and the part caused a problem then the warranty...
    view full answer...

  • Will Trailer Hitch Affect Hands-Free Liftgate on 2019 Jeep Cherokee?
  • Anytime a hitch is installed, such as the Curt Trailer Hitch # C13171 that fits your 2019 Jeep Cherokee, there is the possibility that it could affect the hands-free liftgate. This means the functionality could be lost, but many times it simply means you only need to kick your foot on either side of the receiver for it to work. If you plan on towing you need to add a 4-way to power your trailer's lights and the harness that fits your '19 Cherokee is the T-One Wiring Harness # 118779....
    view full answer...

  • Highest Towing Capacity Trailer Hitch Recommendation for 2019 Jeep Cherokee
  • For your 2019 Jeep Cherokee the trailer hitch we offer that has the highest towing capacities is the Curt Class III part # C13171 which has a 5,000 lb trailer towing capacity and 750 lb tongue weight capacity. You'll need to check the owners manual of your Cherokee for the vehicle's towing capacity and be sure not to exceed that figure as well. For trailer wiring then you'd want the part # 118779 which is a confirmed fit as well. If you wanted to do some towing you might be interested...
    view full answer...


Do you have a question about this Custom Fit Vehicle Wiring?




  • Why etrailer.com?

    At etrailer.com we guarantee:

  • Highest quality custom fit vehicle wiring for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate custom fit vehicle wiring information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Satisfaction Guarantee
    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Edited by:
Lindsey S
Installed by:
Jeff D
Video Edited:
Dustin K
Updated by:
Alexander C
Updated by:
Isabelle B
Written by:
Ronnie R
Test Fit:
Shane H
Video by:
Michael B

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.