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  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. Powered Converter
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

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

Item # TK56FR
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Retail:$189.97
Our Price: $122.79
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Custom Fit Vehicle Wiring

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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 TK56FR 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 (6)
  • Q & A (0)
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Tekonsha Custom Fit Vehicle Wiring - TK56FR

  • 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 in rear cargo area by partially removing the plastic threshold cover, side panels, and cargo trays
    • 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 in the rear cargo area. You will have to remove the plastic threshold cover, side panels, and cargo trays 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 in your rear cargo area.


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.



118831 Tekonsha Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite

Installation Details TK56FR Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - TK56FR

Average Customer Rating:  5.0 out of 5 stars   (6 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:
Tesla

Easy enough. Tesla service tech had an issue with being connected to the 12v battery.
Will share his comments if you wish.




by:

It fit as it should. No problem installing it.




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6
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See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring



  • Correct Trailer Wiring Harness for 2021 Tesla Model Y
    The correct trailer wiring harness for a 2021 Tesla Model Y is the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # TK56FR. This kit is a direct plug-in-play fit so there is no splicing required.
    view full answer...
  • Trailer Wiring Harness Recommendation for 2022 Tesla Model Y
    For a trailer wiring harness 4-way kit that fits your 2022 Tesla Model Y we have the Tekonsha kit part # TK56FR. This installs without requiring and splicing since it installs inline with your taillight connectors. If instead you have a 7-way and need to adapt it to a 4-way you'd instead want the part # 707250. If you needed a trailer hitch too the EcoHitch part # EH39FR would be a really great option. Once installed it fits behind the rear access panel of your rear bumper so it will be...
    view full answer...
  • Difference Between Tekonsha 4-Way Wiring Harness for 2021 Tesla Model Y and Model 3
    I reached out to Tekonsha and found that although the connectors look very similar, they are pinned differently. The two different wiring harnesses are not interchangeable. If you have the 2021 Tesla Model Y then you need the # TK56FR. If you have the Tesla Model 3 you need the # TK35VR instead.
    view full answer...
  • Will a Wiring Harness From a Tesla Model Y Also Fit a Model 3?
    The Tekonsha harness you referenced, our part number # TK56FR, is specific to the 2021 Tesla Model Y, so I cannot recommend it for your 2020 Model 3. With that being said, we do have a few options available for your vehicle. First will be the Tekonsha ZCI Circuit Protected Vehicle Wiring Harness # 119250KIT. Other than a wire that will need to run to a battery, this will require absolutely no cutting or splicing to install. This can be a bit of a difficult install though, so I included...
    view full answer...
  • Best Wiring Harness for a 2021 Tesla Model Y
    The best wiring harness for your 2021 Tesla Model Y is going to be the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector item # TK56FR. This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located in the rear cargo area. It will provide you with a 4-flat vehicle connector to control your trailer or accessories lighting functions. This kit requires no splicing and plugs in line with existing wiring for a simple install. To round out...
    view full answer...
  • What is the Weight Difference Between the Draw-Tite DT58MR vs EcoHitch EH39FR
    The Draw-Tite # DT58MR and EcoHitch # EH39FR that will fit your 2021 Tesla Model Y have very little weight difference. The # EH39FR will weigh 35 pounds shipped, and the # DT58MR will be slightly lighter at 32 pounds shipped. Between the two, however, I would go with the Draw-Tite # DT58MR. This is due to the higher tongue weight capacity, but I do suggest double checking how much tongue weight your Model Y is actually rated to handle. As a side note, if you will ever pull a trailer or...
    view full answer...
  • Can Nylon Spacers Included with Hardware for EcoHitch on 2021 Tesla Model Y Be Replaced w/ Metal
    According to my contact in the Tech Services department at EcoHitch, it is permissible to substitute the 6 nylon spacers included with the # EH39FR hitch for stainless steel washers if you wish, but it isn't necessarily something they recommend doing. Here's why. The hitch is constructed of powder coated steel which is being bolted to an aluminum car body. The nylon spacers prevent the two from being in direct contact with each other, preventing galvanic corrosion that occurs when two...
    view full answer...
  • Recommended Trailer Hitch for a 2020 Tesla Model Y
    I would be happy to help you find a service center to install a hitch on your 2020 Tesla Model Y. We have a locate installers option on all of our product pages. I went down the list and found that the Hitch House in Sarasota Florida would be the closest option that has a service department capable of installing your hitch. I recommend the EcoHitch Invisi Trailer Hitch Receiver item # EH39FR. This hitch is custom fit and bolts to your Tesla with included hardware. If you need a wiring...
    view full answer...
  • Recommended Vehicle Wiring Harness For 2021 Tesla Model Y W/ EcoHitch Trailer Hitch Installed
    I would be happy to help! For your sons 2012 Tesla Model Y I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # TK56FR as it is the only custom fit harness meaning it will not require any splicing into the wiring. The other two kits are universal harness and would require quite a bit of extra, unnecessary work. This will pair up perfectly with the EcoHitch Invisible Trailer Hitch Receiver # EH39FR you already purchased. The only other components needed to...
    view full answer...
  • 2022 Tesla Model Y Hitch and Wiring Recommendations for Kuat Piston Pro X Bike Rack
    The Kuat Piston Pro X Bike Rack # KU98VR is a great choice in a bike rack and you will need both the hitch and wiring to utilize the integrated lights on the rack. I recommend using the Draw-Tite Max-Frame Trailer Hitch Receiver # DT58MR and the T-One Vehicle Wiring Harness # TK56FR for your 2022 Tesla Model Y. The Draw-Tite is a solid choice that remains hidden behind the rear bumper fascia and the T-One wiring tees in behind your taillights so you don't have to splice into your OEM wiring. One...
    view full answer...
    Image 1 for
  • Comparing Draw-Tite and EcoHitch Trailer Hitch Receivers For a 2021 Tesla Model Y
    The main difference between the Draw-Tite Max-Frame Trailer Hitch Receiver # DT58MR and EcoHitch Invisi Trailer Hitch Receiver # EH39FR is going to be the construction. The Draw-Tite # DT58MR is going to be a steel construction with an e-coat base and powder coat finish. The EcoHitch # EH39FR which is the receiver I recommend has an aluminum and steel alloy construction with a powder coat finish. This hitch is manufactured in the USA. I personally prefer how the chain hooks are mounted...
    view full answer...
  • 2021 Tesla Model Y Trailer Hitch for Mounting 7-Way Wiring Connection
    The Draw-Tite Max-Frame Trailer Hitch Receiver# DT58MR is designed so that you can only see the hitch receiver so from what I'm finding you'll have to modify the rear bumper area to make room for a 7-Way on your 2021 Tesla Model Y. Because of this I recommend using the EcoHitch Invisi Trailer Hitch Receiver # EH39FR instead as it has a visible crosstube that enables you to use a mounting bracket like the Curt # C57202. For wiring you need the T-One Vehicle Wiring Harness # TK56FR and the...
    view full answer...
    Image 1 for
  • Weight Distribution and Trailer Brake Connection for 2021 Tesla Model Y
    If you want to tow with your 2021 Tesla Model Y I would start by recommending the # DT58MR Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2". This hitch has a 3,500 lbs towing capacity and a tongue weight of 525 lbs. The tongue weight on this hitch will be the limiting factor. I would recommend a weight distribution hitch, but there are no hitches for the 2021 Tesla Model Y that are compatible with one. That being said, you would still be limited to the 525 lbs tongue...
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Mike S
Written by:
Mike S
Employee Michael B
Installed by:
Michael B

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