T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
(255 reviews)
Price: $114.84
In Stock
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Item # 118727
Retail:$120.78
Our Price: $114.84
You Save: $5.94
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- Why etrailer?
Tekonsha Custom Fit Vehicle Wiring - 118727
- 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 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
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 tail lights on both the driver's side and passenger's side. You will need to remove the tail lights to access this harness.
Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery and insert the provided fuse.
Once installation is complete, the 4-way 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 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.
118727 Tekonsha T-1 T-Connector - 4 Wire - Modu-Lite Converter Included
Installation Details
California residents: click here
Customer Satisfaction Score:
92% were satisfied with this product
8% of customers were not satisfied
- Wrong item was ordered
- Product did not meet expectations
- Did not fit
Customer Reviews
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118727
Average Customer Rating: 4.8 out of 5 stars (255 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.by: Erik03/08/2023
2021 Jeep Grand Cherokee
Very helpful finding right hirch and harness.arrived in good shape and promptly.
by: Steven 03/01/2023
Chrysler
Product was plug and play. Although after much trying to figure out why it wouldn’t work I learned you need to take your jeep to a Chrysler dealership to pay and have it activated within your cars computer
by: Joe03/21/2023
Works great. Easy to follow directions. Very well made and everything that you need is included. Will use again on future vehicles.
by: Joshua03/21/2023
Great product, easy to install as far as the product goes. However, for my jeep it was a pain as i had to take the wheel well covers off, remove the 3m tape, and reapply just to run the wires that connect to the tailights properly.
by: Mike D01/13/2020
Jeep Grand Cherokee
This set up is easy to install, and has worked perfectly the entire time. I even purchased an adapter for the original 4 pin, to use it for 7 blades, and no issues whatsoever. The fun part of course is getting the black power wire all the way to the front of the Jeep. Now I will caution that I have at 5.7L Jeep Grand Cherokee Limited and getting the black wire to the battery was a little tricky. I ended up using some fishing wire to get to the undercarriage through the hollow rectangular casing that protects the other sheathed wiring for the vehicle. I have attached a photo for simplification. The rest was as easy to install as the video showed.
by: Jeff 10/14/2022
Wiring and instructions very easy to follow. Took me maybe 1 hour start to finish. Great product!
by: Iris02/09/2023
The shipment was made rapidly and help I received from etrailer was exceptional.
by: Gustavo11/18/2022
Works great and it was easy to install on a 2021 Jeep Grand Cherokee.
by: Michael04/23/2020
2018 Jeep Grand Cherokee
The T-One connector for my 2018 Jeep Grand Cherokee worked great once installed. The installation of the wiring plugs, behind the tail lights went smoothly. The power wire that had to be run from the rear left corner of the Jeep to the under hood area was more difficult. It took me over an hour to find suitable locations to secure the power wire along the under-carriage so it wouldn't get burned by hot lines and exhaust pipes. The photos in the installation instruction sheet were very blurry and dark making them useless. Fortunately the online instructions from the etrailer web site were very clear. The Draw-Tight hitch was very easy to install. I used my floor jack to raise the hitch under the Jeep, which was backed onto portable ramps. I took me about 30 minutes to install the hitch and it looks great. I have enclosed photos of the four-way plug installed on the new Draw-Tight trailer hitch. Don't forget to order the four-way plug mounting bracket (P/N: 18144) as it is not included with either the hitch or the wiring kit. I highly recommend these products.
by: Joanne 09/19/2022
Well, I'm an old fashioned woman so I cannot give you product specifics, but I can say my husband was and continues to be happy and satisfied with the harness. He installed it himself. We both were pleased with the efficiency of the order. If you need one, buy it from trailer!
by: Scott05/28/2022
The parts are high-quality, but the video about the harness installation was a bit misleading. The process is definitely NOT "plug and play" as claimed early in the video. The work is doable for an average joe, But it irequired me to drill two holes in the body of the car, make multiple wire splices, attach terminals, buy and use a heat gun, and to snake 15' of wire under the car around suspension and exhaust components. There is no world in which it is appropriate to call that plug n play . Need to do a better job of setting expectations. But the product and customer support are very good.
by: Mieco04/26/2021
2018 Jeep Grand Cherokee
Good quality products and hardware. My only complaint is the shipping policy... I got my parts in a fair amount of time, but because I didn't elect for one of the more costly shipping options, I saw my "order received" status for days and had no information on a ship date other than a potential 2+ week possible delay. I'll recommend the company and the product with this disclaimer. I appreciate the tutorial videos and the easy web site navigation. Please just get better on the shipping/processing communication.
Comments
This is a good quality product and after 1 year, I have no complaints.
Mieco - 04/30/2022by: Michael G07/13/2022
I'm a mechanic at Kafferlin sales where I had the order sent to. Installing the wiring harness wasn't difficult at all. Good value, Thanks, Michael Gates
by: speedyboy03/26/2023
2017 Jeep Grand Cherokee
very detailed instructions and video for wiring. Easy installation and I would order from them again
by: Ed09/13/2022
This hitch arrived a day earlier than expected and was exactly as ordered. Great product at a great price. Way to go etrailer.
by: Eric 02/19/2023
So far this product is working as it should.l recommend it.
by: Alan 07/16/2022
2020 Jeep Grand Cherokee
GREAT PRODUCT! TAILLIGHT WIRING STRAIGHT FORWARD! ONLY DIFFICULTY WAS WIRING AROUND CATALITIC CONVERTER EVERYTHING ELSE WASN'T BAD!
by: Jason04/21/2020
2019 Jeep Grand Cherokee
Installation took a little time, but the kit works perfectly and is as described. The online instructional video etrailer.com has on the website made install a breeze (even for an average DIY-er).
by: Keith R06/06/2020
T-One wiring Harness #118727 and Draw Tite Trailer Hitch Receiver #75699 both were easy to install and look great.
by: Scott 03/20/2023
Great price and easy to install
by: George08/18/2022
I've had my hitch for about a year now and no problems whatsoever. Great product, great company and great service.
by: Meri01/20/2023
For the time we had the vehicle it worked great
by: Bob09/07/2022
I did not receive the wiring harness or the bracket. The shipping box was torn open and those items were missing. I waited weeks for this delivery and was truly disappointed.
Comments
I can understand being disappointed with how the order was received. Customer service will reach out to you.
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Jenny N - 09/23/2022by: Todd 07/24/2022
Products that come from etrailer are top notch and fit perfectly. This is the third time I have bought products from them and they ship quickly and always get advice if needed
by: Jacob 08/14/2022
Pretty simple to install if you have a basic understanding how to wire stuff like this. Works with no issues.
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See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring
- 2018 Grand Cherokee Limited Trailer Wiring RecommendationYes, for your 2018 Jeep Grand Cherokee Limited the T-One trailer wiring kit part # 118727 that you referenced is the correct kit you need. Since you do not have the factory tow package wiring this kit is what you need since it allows you to tap into the vehicle's wiring by installing inline with the vehicle taillight wiring. This kit also has our most reliable converter box too which is why we recommend it so highly.
view full answer... - Recommended 4-Way Trailer Wiring Harness for 2019 Jeep Grand CherokeeSince your 2019 Jeep Grand Cherokee isn't equipped with the factory US Car connector under the bumper then your best option for adding the needed 4-Way harness is with the Tekonsha T-One # 118727. This is still a custom harness that installs by simply plugging into factory ports behind the driver and passenger side tail lights (you will need to remove the tail lights to access the harness). Then as you mentioned, the hot lead will need to be run up to the Jeep's battery. When this type...
view full answer... - Trailer Wiring Recommendation for 2016 Jeep Grand Cherokee without Tow PackageFor trailer wiring that is confirmed as a fit for your 2016 Jeep Grand Cherokee that does not require ECU flashing we have the T-One kit part # 118727 which will install by plugging inline with the factory taillight harnesses your vehicle has currently and does not require an ECU flash. I attached an install video for this harness for you to check out as well.
view full answer... - 4-Pole Trailer Wiring Harness Installation in 2015 Grand Cherokee Without Factory Tow PackageThe Tekonsha 4-Pole Vehicle Wiring Harness # 118727 is a confirmed fit on your 2015 Jeep Grand Cherokee without factory tow package. The written instructions are linked along with a helpful article that will aid your installation. Once you have installed the harness according to the instructions it will not be necessary to have your dealership flash the computer, according to my contact at Tekonsha.
view full answer... - 4-Way Trailer Wiring Harness Recommendation for 2016 Jeep Grand CherokeeMost likely your 2016 Jeep Grand Cherokee comes with a trailer wiring harness installed, but in case it does not we have the Tekonsha kit part # 118727 which is a confirmed fit. This harness is listed as a fit for your vehicle for if it did not have factory wiring so there wouldn't be a need for this harness if all Grand Cherokees of this generation came from the factory with wiring.
view full answer... - Recommended 4-Way Trailer Wiring Harness For 2016 Jeep Grand CherokeeFor you 2016 Jeep Grand Cherokee, I recommend the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118727. This will plug into the factory wiring behind your tail lights with quick connects that simply snap into place and will give you the 4-way trailer connector without thinking about the dealership except to imagine the money you saved. This wiring harness has a powered ModuLite that prevents overloading your vehicle's electrical system. I've attached an article...
view full answer... - Does Trailer Wiring for 2019 Jeep Grand Cherokee Require Running Wire to BatteryIn order to protect the wiring of your leased 2019 Jeep Grand Cherokee I have to recommend you run the power wire of the kit to your vehicle battery. Not all vehicles can handle the additional amperage draw of the trailer taillights on the vehicle taillight circuits. Those vehicles need a setup that draws power from the battery. Some vehicles have higher rated circuits that can handle this, and others need to have the power drawn straight from the battery to protect the taillight circuits....
view full answer... - Will Installing a T-one Vehicle Wiring Harness With Module Drain the Battery?You are perfectly fine to install this on your 2021 Jeep Grand Cherokee. The power wire runs to the module in the wiring harness. The module acts as a relay which your vehicle has lots of that don't run down the battery unless they are being used. When you activate your brake lights or signals the module senses their activation and sends power from your battery to control the lights on the trailer. This helps to prevent drawing to much power from the vehicles electrical wires that may cause...
view full answer... - What Would Cause Trailer Wiring to Prevent Vehicle Taillights from FunctioningTypically when this happens it's that one of the pins of the connectors unseated and stopped allowing the circuits to pass back through to the vehicle wiring and allow the taillights to function. Since the converter box does not integrate at all into this it's not usually the trailer wiring harness. I'd try plugging the harness back in to see if that takes care of the issue.
view full answer... - How to Add a Trailer Connector to a 2019 Jeep Grand CherokeeYou can easily add a 4-flat trailer connector to your 2019 Jeep Grand Cherokee without the factory tow package, you simply need to add the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118727. To install this connector you will need to plug the harness into connection points behind your Jeep's tail lights and then run a hot lead to your battery. I have added a link to a video install of this connector on a '19 Grand Cherokee for you to take a look at, as well a link...
view full answer... - 4-Way Trailer Wiring Harness Recommendation for 2020 Jeep Grand Cherokee without Tow PackageFor your 2020 Jeep Grand Cherokee the trailer wiring harness you want is the Tekonsha part # 118727 as it installs easily without requiring splicing into the vehicle's wiring and also because it has a very reliable converter box which means it will last a long time and be resistant to problems due to any possible shorts in your trailer wiring. I attached an install video for this for you to check out as well.
view full answer... - How to Add a Trailer Connector to 2020 Jeep Grand CherokeeYes, for your 2020 Jeep Grand Cherokee we have the Tekonsha T-One Vehicle Wiring Harness # 118727 that will work perfectly. This custom harness will plug into factory ports behind the driver and passenger tail lights on the Jeep and then you will just need to run the power wire up to the battery. This will provide you with a 4-Way connector to connect with and power the trailer's basic signal lights. I have attached an installation video on the 2019 model Jeep Grand Cherokee that you...
view full answer... - Trailer Wiring for 2020 Jeep Grand Cherokee without Tow PackageYes, for your 2020 Jeep Grand Cherokee that isn't equipped with the factory tow package, the Tekonsha T-One Vehicle Wiring Harness # 118727 will work perfectly. This custom harness is going to plug into existing ports behind the tail lights and receive power by running up a hot lead to the Jeep's battery. This will provide you with a reliable 4-Way connector to power the basic signal lights on your trailer. I have attached an installation video below that you can also check out.
view full answer... - Trailer Wiring Harness Recommendation for 2020 Jeep Grand CherokeeThe trailer wiring harness I recommend for your 2020 Jeep Grand Cherokee is the Tekonsha part # 118727 installs easily by plugging inline with the taillight connectors of your vehicle and also has a really reliable converter box as well. I attached an install video for this on a very similar 2019 Grand Cherokee.
view full answer... - Trailer Wiring Recommendation for 2020 Jeep Grand CherokeeThe best trailer wiring kit we offer for your 2020 Jeep Grand Cherokee is the Tekonsha kit part # 118727 which is very easy to install as it plugs inline with the taillight wiring of your vehicle (no splicing), and comes with the most reliable converter box we offer as well. Check out the install video I attached for more info as well.
view full answer... - Trailer Wiring for 2019 Jeep Grand Cherokee With Auto Start/StopI have not heard anything about being limited to using OEM wiring because of the auto start/stop function on your 2019 Jeep Grand Cherokee Limited X. We have installed the Tekonsha T-One Vehicle Wiring Harness # 118727 on multiple Grand Cherokees and not had any issues. The # 118727 plugs directly inline with your tail lights so there's not cutting or splicing involved, and it your Jeep won't have to be taken to the dealer to get to get the ECU flashed since it will work off the taillight...
view full answer... - Trailer Wiring Recommendation for 2020 Jeep Grand CherokeeThe best 4-way trailer wiring harness we have that would fit your 2020 Jeep Grand Cherokee is the Tekonsha part # 118727 because of how easy it is to install and how reliable the converter box is. I attached an install video for it on a similar 2019 for you to check out as well.
view full answer... - Trailer Wiring Recommendation for 2014 Jeep Grand Cherokee that Does Not Need to Be ActivatedI have an easy solution that will take care of your trailer wiring on your 2014 Jeep Grand Cherokee with the Tekonsha kit part # 118727. This installs by plugging inline with the taillight connectors of the vehicle and does not integrate with any of the factory wiring so you wouldn't have to go to a dealer or worry about any of their packages being active. I attached an install video for this for you to check out as well.
view full answer... - Will The Tekonsha Wiring Harness Installed On 2019 Jeep Grand Cherokee Void The WarrantyAs long as Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # 118727 is installed properly the wiring will not void your warranty. You are protected under the Magnuson–Moss Warranty Act which states that manufactures cannot void the warranty of a vehicle simply because of an after-market part unless that part caused the issue. The Tekonsha T-One wiring harness is a custom fit harness for your vehicle so it does not require splicing into the vehicle's electrical...
view full answer... - Best Wiring Harness for a 2021 Jeep Grand Cherokee without a Tow PackageYes, I do have a wiring harness for your 2021 Jeep Grand Cherokee without a tow package. You need the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector item # 118727. This custom-fit T-One connector plugs into your Cherokee's wiring harness behind the rear tail lights. This harness will give you a 4-flat connector that will allow you to control your trailer's lighting functions.
view full answer... - Trailer Wiring For A 2021 Jeep Grand CherokeeFor your 2021 Jeep Grand Cherokee I recommend the T-One Vehicle Wiring Harness # 118727. This kit is the easiest to install and has the highest amp capacity. To install this kit, simply plug into your vehicles factory harness, and you're ready to go.
view full answer... - Trailer Wiring Kit Recommendation for 2021 Jeep Grand CherokeeThe best 4-way trailer wiring kit we have for your 2021 Jeep Grand Cherokee is the Tekonsha part # 118727 which installs very easily and has the most reliable converter box. I attached an install video for you to check out as well.
view full answer... - 4-Way Wiring Harness for a 2021 Jeep Grand Cherokee w/ out a Towing PackageYes, we do have a wiring harness for your 2021 Jeep Grand Cherokee. It is the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector item # 118727. Tekonsha makes the most reliable wiring harnesses in the towing business. This harness plugs in behind your Jeep's rear tail lights to provide you with a 4-flat vehicle connector.
view full answer... - Is There a Wiring Harness For a 2021 Jeep Grand Cherokee That Does Not Use a Powered Converter?There is not a harness like the T-One Vehicle Wiring Harness # 118727 that will plug into the factory tail lights on your 2021 Jeep Grand Cherokee and work without a power wire running to the battery. Your Jeep needs the powered converter as the factory wiring in your Jeep is not able to safely run additional trailer lights without risking damage to the factory wiring. For many older vehicles it was never an issue but as manufacturers today have reduced the wiring to only what is needed...
view full answer...
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Info for this part was:
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Edited by:
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