bing tracking image
  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. 4 Flat
  4. Trailer Hitch Wiring
  5. Powered Converter
T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

Item # TK74FR
Our Price: $32.45
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.

Add to cart
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

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.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into OEM tow package port - no cutting, splicing or tapping required. 1-800-940-8924 to order Tekonsha custom fit vehicle wiring part number TK74FR or order online at etrailer.com. Free expert support on all Tekonsha products. Great prices and Fastest Shipping for T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
  • All Info
  • Reviews (216)
  • Q & A (0)
  • Photos

Tekonsha Custom Fit Vehicle Wiring - TK74FR

  • 4 Flat
  • Trailer Hitch Wiring
  • 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 OEM tow package port - no cutting, splicing or tapping required.


Features:

  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Designed for use with a factory tow package
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection point behind rear bumper
    • Plug in connector
  • Constructed of 16-gauge bonded wire
  • Comes with dust cap for 4-way flat connector


Specs:

  • Maximum amperage: 7.5 amps per circuit
  • 1-Year limited warranty


Installation

This custom-fit T-One connector plugs into your vehicle's factory tow package wiring harness, which is located behind the rear bumper, on the driver's side.


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.



118292 Tow Ready T-1 T-Connector - 4 Wire

Installation Details TK74FR Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector - TK74FR

Average Customer Rating:  4.8 out of 5 stars   (216 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 OEM tow package port - no cutting, splicing or tapping required.

by:

However, I would rate etrailer as 5 stars. Hope you can use this information on your database.



I did business several times with your company and every time I was satisfied with.



I had a problem with one of the parts I received in a previous acquisition, and etrailer replaced it seamless and quickly. So I continue ordering.



Price is on the high side, but considering my previous experience with etrailer I am ordering from your company.



I also appreciate quick responses to my questions.



This time products were received OK and have been already installed successfully.



One question:



The wiring is instaled but is loosen underneath the vehicle. That does not match the visual quality of the hitch or the vehicle itself.



Do etrailer has a box or something to hold this wiring under the vehicle while not in use ? ...Or have any suggestion for that ?

Etrailer Expert

Brooke M.

11/14/2023

It sounds like you are talking about the end that would plug into the trailer wiring needs a home. If thats correct then part # 18144 would take care of that for you. If there is extra slack, I have heard of others using some zip ties to secure it.



by:
2024 Toyota Highlander

I'm disappointed with etrailer. I have used them in the past with excellent results....but this time service was not so good. Ordered a hitch and wiring for my wife's 2024 Toyota Highlander. The Curt hitch was installed no problems. Wiring was a nightmare. First attempt received a converter and wiring that would require me to splice into the wires. Second attempt received the converter with 10 pin connector, but the 4 pin wiring/connector does not fit a 2024. This is the third attempt, and hopefully this will finish the job.



by:

Product as advertised...exact match for our vehicle. Plenty of wire length to reach the hitch.

Joe

6/3/2024

Durable, reliable, quality product. No issues whatsoever.



by:
2023 Toyota Highlander

Consistently efficient and reliable ser vice



by:
2021 Toyota Highlander

Exactly what I needed for my highlander, easy install



by:
2023 Toyota Highlander

Great price and so easy to install if you have the towing package. This item, along with a hitch, was shipped the same day as I ordered it. Easy to use website, great customer service and well edited videos. There’s nothing else to say but Thank You!



by:

Ordered this simple trailer connector December 12. Very small part and chose to have it sent economy (=USPS). The post office was overwhelmed and providing substandard service. Thanks again 2020. I contacted trailer on Dec 21 and spoke to Danielle. I explained how I needed the part for a post Christmas need and really had expected it to have arrived already. Danielle was very professional and listened carefully. Although it was still to early to initiate a call she said she’s would follow up the 23rd. AND she did, I received an email from Danielle with a status from the postal service and some kind words assuring me that it was on the way. It did arrive on Christmas Eve as described. The review is: disappointed with the post office and highly recommend the outstanding customer service from etrailer!! And the wiring adapter is good too.



by:
Saturn Relay

Great product. I w8sh there was a warning that there is a relay that you have to buy in 9rder for the wiring harness to allow power to and light up the trailer but I found that at my local Toyota dealership



by:
2022 Toyota Highlander

I found it really easy. Definitely need a second set of hands. The dealership trys to BS you and charge ridiculous amout of money selling you a tow package (V6 XLE highlanders come stock with tow package. All you need is a hitch and cable.



by:

Simple plug and play.



by:
2021 Toyota Highlander

Installation was just what I expected. Easy and working well.



by:

Haven't installed yet but please with the delivery time.



by:

Excellent customer support and products perform and fit as specified.



by:

It took less than 5 minutes to install



by:

Great fit for a fraction of the cost. Easy to install and great documentation. I recommend following the forum for lots of tips on how to DIY this.



by:

As we setup the car for pulling a trailer, this was a super easy to install setup. Requires a little digging in the car however, once you find the jack int eh car, this harness is perfect.



by:
Toyota Highlander

Will work on a 2022 Toyota Highlander XLE AWD Hybrid



by:

Love it. Fit perfectly, well made and easy to install . Saved $xxx by not having a dealer install it.



by:
2021 Toyota Highlander

The hitch fit very nicely under our '21 Toyota Highlander XSE. The only part visible is the hitch receiver. Very happy to pay a little more for a better aesthetic.



by:

It is made clear that this harness is for a vehicle equipped with the factory tow package. What is not clear is that if you have the harness plug on your vehicle, that is not indicative of having a tow package. Granted there are other components that would be obvious that a tow package is present, but it seems logical that if the connection is present, it should work. In order for the trailer lights to work, you need a converter box. Some sites show it as a 4/7-way pug adapter, but the picture is wrong, keep checking other sites to see the actual device. Also, there are plenty of forums that discuss this problem. The converter powers up the harness and the connection will work. The converter, which is simple to install, is about $xx from [dealership]. The kit supplied by etrailer is way more involved than the factory converter. Just be aware that the presence of the factory plug itself is not indicative of having a tow package.

Etrailer Expert

Katrina B.

5/31/2022

You are correct, if you do not have the factory tow package, then you will need to have a converter box for the installation. There have been instances where the Toyota Highlander does have plugs that will fit but are not activated. When this happens, it means that you actually would need to activate the tow package with a fuse. In order to get that confirmation, you can contact a Toyota dealership to find out. If you do not have the tow package then you would need part # TK99FR.



by:
2022 Toyota Highlander

Purchased item and received it very quickly. I followed the video that was posted for the item which was very helpful. As stated in the video it is helpful to have two people to lift the hitch into placement. I am very satisfied with the product and the ease of installation.



by:

Your website did not adequately specify the right vehicle for the wiring harness after I had ordered the hitch. Consequently I am spending 3 days trying to find the right wiring kit. Not very happy with the execution by your company.

Etrailer Expert

Jenny N.

7/15/2022

I am sorry to hear that the harness will not work for you. I see that the harness is meant to be used with a 2020 Toyota Highlander that has the factory package. For the 2019 Toyota Highlander I do have a few options that I can recommend. If your Highlander does have the factory package, then part # 56042 would be the best fit. If your Highlander does not have the tow package, then you would need part # C56217 for a 4 way or if you want a seven way it would be part # 22119. I will have our customer service team send out return instructions for you.



by:
Toyota Highlander

I easily found the trailer plug under the rear bumper cover of my 2021 Highlander Limited. Initially I was not clear on whether I needed a converter. The answer is yes! But the converter plugs in at a different location. The converter plugs into a socket located behind the left rear interior quarter panel. There is a really good video of this on Utube. What you need is etrailer part TK99FR, which includes both the trailer wiring harness and the converter. Since I already had this wiring harness from etrailer, I used a Toyota converter (part 725-48200) that I obtained from a local dealer. Regardless of whether you use the etrailer converter or the OEM converter, it is a super easy connection to use the plug-in provided by Toyota. No splicing needed!



by:
2020 Toyota Highlander

Easy to install but doesn't work. Did some additional research and maybe should have bought the TK99FR which comes with some additional adapter or something. But nowhere did it say to research this possibility before ordering. You see the TK74FR stated clearly that it would fit my vehicle. Frustrating!

Etrailer Expert

Tyler M.

6/1/2021

Hi Maureen, Thanks for our feedback! This kit is for the 2020 Highlander with the factory tow package. For your Highlander, it sounds like you will need the T-One Vehicle Wiring Harness, part # TK99FR , for Highlanders without the factory tow package.



by:
2020 Toyota Highlander

Installation was a breeze. Following the video and with the aid of a friend, the hitch slipped into place without any hassles. Used the Pig Tail I purchased with the hitch which is "plug and play". Completed the task with the purchase of the Toyota Highlander Tow Converter from a local Toyota Dealer. The Quality of the hitch speaks for itself! IMHO, the hitch looks superior to the "through the bumper" OEM assembly.


25
216
Show More Reviews

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

  • Correct 4-Way Trailer Wiring Harness For 2022 Toyota Highlander With or Without Tow Package
    The correct 4-way trailer wiring harness for your 2022 Toyota Highlander is going to depend on if you have the factory tow package or not; based on that you will need one of the following: - WITHOUT Factory Tow Package: T-One Vehicle Wiring Harness # TK99FR - WITH Factory Tow Package: T-One Vehicle Wiring Harness for Factory Tow Package # TK74FR
    view full answer...
  • Recommended Trailer Hitch and Wiring for 2023 Toyota Highlander Platinum
    For a hitch that fits your 2023 Toyota Highlander Platinum I recommend the etrailer # e75ZR. This Class III hitch has a 2" receiver and uses a bolt-on installation. It also features a matte black powder coat finish which helps hide inevitable dirt and dings. The hitch comes with a limited lifetime warranty. For wiring, you will need to check to see if you have the tow port connection behind your rear bumper. Assuming you do, you can use the T-One Vehicle Wiring Harness for Factory Tow...
    view full answer...
  • Will Curt Hitch Fit a 2022 Toyota Highlander
    The Curt Trailer Hitch # C99FR fits both a 2021 and your 2022 Toyota Highlander. If you're planning on using your Highlander for towing then you'll need wiring and a ball mount kit as well. I recommend using a Tekonsha T-One wiring harness, part # TK74FR if you have the factory tow package or part # TK99FR if you don't have it, along with the mounting bracket # 18144, and then the ball mount kit # C45534. The Tekonsha wiring has been found to be the most reliable and then the ball mount...
    view full answer...
  • Which Trailer Hitch for 2021 Toyota Highlander XSE?
    The Curt # C99FR Class III hitch you mentioned would work great with your Highlander XSE. Keep in mind, if the vehicle is equipped with the What are you planning on using the hitch for? If you'll just use it for a hitch mounted accessory, all you need is the hitch. If you'll be using it for towing, you'll need a wiring harness, a ball mount and a trailer ball. For a wiring harness, what you'll use will depend on whether your vehicle is equipped with the factory tow package. If you DO have...
    view full answer...
  • How to Find if 2022 Toyota Highlander XLE Has Tow Package For Trailer Wiring Harness
    You can either look for the factory plug behind the bumper on the driver side or you can call your local dealer and have them look it up with your VIN number. Assuming you have the factory tow package you can use the T-One Vehicle Wiring Harness # TK74FR. If you find that you don't have the tow package you will need the # C59236 instead. To upgrade to a 7-way you will need the Universal Installation Kit for Trailer Brake Controller # ETBC7. This kit comes with the adapter, wiring, and...
    view full answer...
  • Can 2022 Toyota Highlander Hybrid Have Brake Controller Installed
    Your 2022 Toyota Highlander hybrid can have a brake controller installed, and there is only one slight difference in the install between it and the non-hybrid. The only difference is on your '22 Highlander Hybrid, you should not disconnect the brake light switch unless the battery is disconnected or ignition is in the off position or else you may set off a code in the computer system that limits the vehicle's motion. Apart from that, the install will be the same, and you will need a 4-flat...
    view full answer...
  • Recommended 5-way Connector For 2021 Toyota Highlander To Tow Boat Trailer W/ Reverse Lockout
    To add a 5-way flat to your 2021 Toyota Highlander you would want to use the Tekonsha T-One Connector # TK74FR to give you a 4-way flat connector. You will then need the Curt Trailer Connector Adapter - 4-Way Flat to 5-Way Flat - Vehicle End # C57187 which will plug into the 4-way connector and give you the 5-way connector you need for your boat trailer. To power the 5th pin you will need to run the blue wire to the reverse light circuit of your Highlander and connect it using the included...
    view full answer...
  • Recommended Trailer Hitch Receiver And Trailer Wiring For 2021 Toyota Highlander Platinum Hybrid
    I would be happy to recommend the correct trailer hitch receiver and wiring harness for your 2021 Toyota Highlander Platinum Hybrid but we do not have a kit that includes both. Starting with the trailer hitch receiver I recommend the etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2" # e75ZR which is a hidden design where only the receiver tube will show. It will accommodate spare tires up to 18". Moving on to the trailer wiring harness you will need the...
    view full answer...
  • Brake Controller And Wiring For A 2022 Toyota Highlander
    For your 2022 Toyota Highlander, along with the Redarc Tow Pro Elite # RED44FR, you're also going to need a 4-flat trailer connector # TK99FR, and a 7-way trailer connector # ETBC7. If you have the factory towing package, you can use the T-One Vehicle Wiring Harness for Factory Tow Package # TK74FR which will take away any of the cutting and splicing, and will plug right into your factory harness. Now you should be able to wire the Redarc Tow Pro Elite to your 2022 Toyota Highlander.
    view full answer...
  • Recommended Trailer Hitch for 2023 Toyota Highlander Hybrid Platinum
    I recommend the etrailer Trailer Hitch Receiver # e75ZR. This fits all models of the 2023 Highlander, including the Platinum and Hybrid. It features a bolt-on installation along with a concealed cross tube so only the receiver will be visible at the back. This hitch has a max gross trailer weight of 5,000 lbs and tongue weight of 500 lbs. It also comes with a matte black powder coat finish for an OEM look. If you plan on towing you will also need wiring. The T-One Vehicle Wiring Harness...
    view full answer...
  • Will Curt Trailer Hitch Receiver Interfere With Kick Sensor on 2020 Toyota Highlander Platinum
    The Curt Trailer Hitch Receiver # C99FR will likely interfere with the hands free function on your 2020 Toyota Highlander Platinum. This is the case for any hitch you install due to the location of the sensor. More than likely you will need to place your foot to the side of the receiver tube to activate it but there is a chance the function will be lost. If you decide to install this hitch I recommend the etrailer Trailer Hitch Receiver # e75ZR instead. This has the exact same design...
    view full answer...
  • Will Yakima EXO System Fit 2021 Toyota Highlander and is Light Kit Needed
    As long as you have at least 4-1/4" of space from the center of your hitch pin hole to the rearmost part of your 2021 Toyota Highlander the Yakima EXO Swing Away Enclosed Cargo Carrier # Y62VR will fit perfectly! I do recommend picking up the License Plate and Tail Light Relocation Kit # Y74VR for a few reasons; it helps illuminate the cargo box so driver's behind you can clearly see the extra length of your vehicle at night, and it also makes upgrading to the TopShelf # Y94VR and other...
    view full answer...
  • Trailer Wiring for 2020 Toyota Highlander without Converter
    The # TK74FR that fits your 2020 Toyota Highlander does not come with the converter box and at this time we do not offer the box separately but we do have a different trailer wiring solution that will work with the # C76CR which plugs in behind the taillights and comes with it's own converter box.
    view full answer...
  • Parts Needed To Install Draw-Tite I-Stop IQ In 2021 Toyota Highlander.
    I am happy to help! You are correct that your 2021 Toyota Highlander does not have a factory trailer brake controller port, so you will need to use Pigtail Wiring Harness with Diode for Tekonsha and Draw-Tite Brake Controllers # 7865. The Tekonsha Primus IQ Trailer Brake Controller - 1 to 3 Axles - Proportional # TK90160 you mentioned is the exact same controller as the Draw-Tite I-Stop IQ and will require a 20 amp circuit breaker on the power wire for the controller. The # ETBC7 includes...
    view full answer...
  • Best Trailer Hitch for Mounting Trailer Wiring Harness on 2021 Toyota Highlander
    For your 2021 Toyota Highlander Curt Trailer Hitch Receiver # C45CR is because it has a high towing and tongue weight capacities and cab be used with a weight distribution system if needed. The correct 4-way trailer wiring harness for your 2021 Highlander will depend on if you have the factory tow package or not. If you DO have the factory tow package you need the T-One Vehicle Wiring Harness for Factory Tow Package # TK74FR. If you DO NOT have the factory tow package you need the...
    view full answer...
  • Does Bumper Have to Be Removed to Install a Trailer hitch on a 2020 Toyota Highlander XLE FWD?
    All of the hitches available for your 2020 Toyota Highlander do not require removal of the rear bumper, including the Curt # C99FR you were looking at. However, there is a plastic underbody panel on the driver's side that has to be removed. Once the hitch is installed, the underbody panel can be left off or trimmed to fit around the hitch and put back in place. You can check out the installation process for this hitch in the video linked below. If you are looking to tow a trailer with...
    view full answer...
  • Parts for Installing the Curt Echo In-Line Controller on a 2024 Toyota Highlander
    Hey Danial! If your 2024 Toyota Highlander is already equipped with a 7-Way then the Curt Echo In-Line # C79DR is a pretty simple installation since it just tees into the US CAR connection behind the 7-Way, and the only other thing I really recommend picking up is the Manual Override Button # C83HR so you don't have to have your phone out to use the manual override feature. If your Highlander doesn't have any wiring connector on it then you'll need the following: - 4-Way - part # TK74FR...
    view full answer...
  • Recommendations for Hitch and Wiring Harness for 2020 Toyota Highlander Limited
    I am happy to help you find the right setup to tow with your 2020 Toyota Highlander Limited. First, you need the Curt Hitch # C99FR which is a confirmed fit for all 2020 Toyota Highlander Trim types including your Limited package. Next, you need one of two wiring harnesses depending on whether or not your Highlander has a factory installed tow package. You can look under the rear bumper on the driver's side to find a quick connect (see picture below). I recommend the T-One 4 Pole Wiring...
    view full answer...
    Image 1 for
  • Recommended Made In America Trailer Hitch Receiver For 2020 Toyota Highlander Hybrid Platinum AWD
    Absolutely! For your 2020 Toyota Highlander Hybrid Platinum AWD I recommend the Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # C99FR which is made in the USA, and will be perfect for carrying a bike rack, a cargo carrier or even towing a trailer due to the 500lb tongue weight rating and 5000lb trailer weight rating. As you mentioned the # C99FR exceeds the capacities of your Highlander so you will need to use the lower rating of the vehicle, but you will have peace of mind...
    view full answer...
  • Does etrailer Trailer Hitch Fit 2021 Toyota Highlander LE & Trailer Wiring Harness Fit
    Yes it sure does; the trailer hitch receiver you asked about is a verified fit for your 2021 Toyota Highlander LE. And in regards to the "plug in system" I assume you were referring to a 4-way trailer wiring harness, and we have that for your '21 Highlander as well, with the correct fit depending on if you have the factory tow package or not. Here is what you'll need: - etrailer Trailer Hitch Receiver # e75ZR - WITHOUT Factory Tow Package: T-One Vehicle Wiring Harness # TK99FR or - WITH...
    view full answer...
  • Trailer Hitch Receiver and 4-Way Flat Wiring For a 2022 Toyota Highlander To Carry Cargo Rack.
    The etrailer Trailer Hitch Receiver # e75ZR is a great choice for a receiver on your 2022 Toyota Highlander. The matte black finished combined with the hidden cross tube helps to give it a factory appearance. For the wiring you will need the T-One Vehicle Wiring Harness # TK99FR since your Highlander did not come with the factory tow package. The Harness # TK74FR you found is part of the above harness but is designed as a replacement for the factory harness. This will allow you to use...
    view full answer...
  • Recommended Cargo Basket, Crossbars, and Complete Towing Setup for a 2023 Toyota Highlander LE
    For your 2023 Toyota Highlander LE I recommend checking out the Thule WingBar Evo Crossbars # TH711520 with the Evo Clamp Feet for Thule Crossbars # TH710501, and the Fit Kit for Thule Evo Clamp and Edge Clamp Roof Rack Feet # TH98ZE for a set of crossbars. These crossbars measure 60" long x 3-1/8" wide x 1" tall, has a maximum weight capacity of 220-lbs, and due to it's aero design it will dramatically reduce wind noise while helping maintain fuel efficiency. These bars will also work...
    view full answer...
  • Checking Tow Light Wiring Fuse on 2020 Toyota Highlander
    The most likely issue is a blown or missing fuse for the trailer lighting. Locate the fuse panel under the hood, on the driver's side, near the fender. Your Owner's Manual can additionally provide you a picture of the location and instructions for opening it. Locate position 15 in the panel and determine if the fuse is missing or blown. I have attached a picture showing the location of that fuse in the panel.
    view full answer...
    Image 1 for


< Previous
123. . .4



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


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 Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video by:
Dustin K
Employee Chris R
Video by:
Chris R
Employee Thomas T
Video by:
Thomas T
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Written by:
Alexander C
Employee Robert C
Test Fit:
Robert C
Employee Conner L
Test Fit:
Conner L
Employee Clayton O
Test Fit:
Clayton O
Employee Bradley B
Test Fit:
Bradley 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.


Product Experts Available Now!
Call 1-800-940-8924