T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
(49 reviews)
Price: $98.20
In Stock
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Item # TK99VR
Retail:$147.66
Our Price: $98.20
You Save: 33%
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- Reviews (49)
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Tekonsha Custom Fit Vehicle Wiring - TK99VR
- Custom Fit
- Trailer Hitch Wiring
- 4 Flat
- 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 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 protective covers next to each tail light 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 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.
118849 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite
Installation Details
This Product Fits The Following Vehicles
- 2021 - 2024 Ford Bronco
- 2021 - 2022 Ford Bronco with LED Taillights
Customer Satisfaction Score:
92% were satisfied with this product
8% of customers were not satisfied
- Wrong item was ordered
- Defective
- etrailer mistake
Customer Reviews
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - TK99VR
Average Customer Rating: 4.5 out of 5 stars (49 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: Douglas05/23/2023
This is wired wrong from the factory. On a 2021 Bronco FE the turn signal lights will light up when hitting the brakes. I moved the pin in the plug and now the brake lights light up when hitting the RV brakes. While on my travels I see multiple Broncos being flat towed with the yellow turn signal lights coming on while the RV is braking. They decided to not make the adjustment and wire it as supplied.
by: Hewitt Fontaine02/08/2023
Install took quite awhile and will have to get some type of bracket for plug just hangs there. Still don’t understand why you have to run wire to battery! A lot of extra time. But have to say it works perfectly.
Brooke M.
3/3/2023
Oh, good! Nice to see that the harness is doing its job well. I just wanted to briefly explain the black wire that runs to the battery. Essentially, it is there so that the harness draws power directly from the battery of the vehicle and not from the tail lights. Since the wiring systems in newer vehicles can be much more delicate, wiring it this way can prevent issues on the tow vehicle and trailer wiring. Although it is more work, installing it this way does give a little peace of mind knowing it is better protected this way.
by: Jimmy04/19/2022
I think the person who wired this system up was sick on wiring day. This is a plug n play system. It don’t take rocket science to install the harness. I installed the harness step by step and when you hit the right blinker, all lights flash as if your 4 way flashers were on. When I hit the left blinker, nothing happens. But however the taillights and brake lights work fine. Not happy with the product. Waste of my time and money.
Katrina B.
8/4/2022
Its unfortunate that you are having this problem. If you are still needing some assistance, please contact our tech department and they will be more than happy to assist you in getting this wired correctly.
by: goom4903/21/2023
Easy to install. I took longer, just because I wrapped the harness in Convoluted tubing and added an extra lighting at the same time.
by: Michael09/05/2022
It did not work properly on my 2022 Bronco Big Bend model. The local installer had to use another product. Your service is good. But sometimes the product just doesn't match up.
Jenny N.
9/23/2022
I am sorry to hear that the harness did not work for you. I would like to look into this and I have a few questions that I would like to ask. Does your Bronco have LED tail lights? Is your Bronco a Sport model? Can you tell me in more detail what happened with the harness?
by: George03/21/2022
2021 Ford Bronco
the etrailer website said this was the only harness that they could validate to fit the 2021 bronco so I bought it, installed it and it didnt work. So I checked around on line and budget bronco on youtube installed the curt verson of this unit and determined it only works with led taillights.The majority of broncos are halogen,as is mine so I called etrailer( 2021 and 2022 wiring are the same by the way) they said they could not validate for a 2022 bronco so since it was installed it could not be returned so Im out 116 dollars.Ive talked to several customer service people and this lady was short with me and no help. I've had good exp. with etrailer before and they are my go to for trailer parts but this disapoints.
Jenny N.
3/30/2022
I will have our Customer Service team reach out to you. For a 2021 Ford Bronco without LED lights you will need part # TK33VR.
by: Eric 01/22/2023
2022 Ford Bronco
Works great, easy to install if you follow the awesome installation video by etrailer.
by: Earl 08/29/2022
Easy insulation! Worked perfect! No issues. If you are looking to add a trailer hitch to a Bronco, this is the part for you!
by: Greg05/13/2023
Wired in my vehicle as advertised. Easy to do.
by: Cy09/20/2022
2022 Ford Bronco
Perfect fit for 2022 Ford Bronco.
by: Kadie04/21/2022
2021 Ford Bronco
Super easy instructions for easy installation. So very proud to say that I did the install myself. Thanks for a great after market product.
by: John11/28/2022
Works as should very easy to install
by: Robert04/20/2022
2021 Ford Bronco
Arrived on time. Installed easily. I had technical questions. etrailer responded quickly. Great service.
by: Donald 09/20/2022
Easy install. Operates as advertised
by: Crispin09/21/2022
Easy to install
by: Greg E09/01/2022
2022 Ford Bronco
Easy install.
by: Bradley 08/24/2022
Quick and painless install. Fits my 2002 Forb Bronco Badlands
by: James02/22/2022
2021 Ford Bronco
Use this web site to make the kit work on base models (non-led).
Jenny N.
3/1/2022
For the 2021 Ford Bronco without LED tail lights you would want to use part # C87BR.
by: Richard06/04/2022
Very well made, good value for the momey
by: William05/02/2022
package came packed well.
by: Lawton03/16/2022
2021 Ford Bronco
Product was exactly as stated and worked on my Bronco.
by: John 08/13/2022
Awesome!
by: Daniel 12/22/2021
2021 Ford Bronco
Fast shipping, won't know until after I get my Bronco and do the install.
by: Erick04/20/2023
by: Jonas 09/27/2022
25
49
Show More Reviews
See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring
- Troubleshooting Turn Signal Issues with T-One Wiring Installed on a 2021 Ford BroncoSince the trailer is working with other vehicles it does sound like the T-One # TK99VR wiring is the issue on your 2021 Ford Bronco. If you use a circuit tester on the 4-Way you can double check and make sure that the 4-Way is working correctly. I would try the connector as well as the wiring before and after the module to ensure that your Bronco is sending the correct signals through. If your Bronco is sending everything correctly (like it should be) then I would think that the wiring...
view full answer... - No Splice Trailer Wiring Harness that Fits 2021 Ford BroncoWe have trailer wiring harnesses for your 2021 Ford Bronco like the Tekonsha part # TK99VR which do not require splicing. This kit installs by plugging inline with the taillight connectors instead. This option is only for versions with LED taillights though. I attached an install video for more info as well.
view full answer... - Why Does Trailer Wiring for 2022 Ford Bronco Require Running Wire up to Vehicle BatteryModern trailer wiring kits like the part # TK33VR which fits your 2022 Ford Bronco if it does not have LED taillights or the part # TK99VR if you do have them do require running a power wire up to the battery to draw power from for the trailer's taillights. This is due to vehicles now having a much more delicate wiring system and also because they've found that these kits prevent issues on the tow vehicle and trailer wiring. In the event of a short the Bronco's wiring isn't going to end...
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view full answer... - How to Add 7-Way Wiring on a 2021 Ford BroncoTo add a 7-Way to your 2021 Ford Bronco you will need a 4-Way kit like the recommended T-One # TK99VR and then the Universal Wiring Kit # ETBC7. The T-One plugs in behind the tail lights of your Bronco and gives you the standard light functions while the ETBC7 comes with everything you need for a fully functional 7-Way. Usually we only see 7-Ways with OEM connections for trucks so your anything smaller than a truck you usually have to install a 4-Way and then an additional kit like what...
view full answer... - What 4-Way and 7-Way Connector do You Recommend for My 2021 Ford Bronco?From the sound of your question, it sounds like you are wanting an option for both a 4-way and a 7-way to install into your 2021 Ford Bronco and do not currently have any wiring. For a plug-in 4-way harness, I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # TK99VR. However, you need a separate wiring harness in addition to the # TK99VR to have the 7-way installed. For that part, that is the Universal Installation Kit for Trailer Brake Controller - 7-Way RV...
view full answer...
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
Edited by:
Lindsey S
Installed by:
Jeff D
Expert Research:
Jameson C
Video Edited:
Chris R
Updated by:
Wilson B
Updated by:
Noah M
Video by:
Jonathan Y
Written by:
Mike S
Test Fit:
Bradley B
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Brooke M.
6/12/2023
After reaching out to the manufacturer about this, it sounds like maybe your Bronco has incandescent bulbs, and this part for LEDs. The wiring harness for incandescent bulbs is part # TK33VR. Your vehicles owners manual should tell you what kind of bulb you have if you are unsure.