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

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

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Retail:$66.60
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Custom Fit Vehicle Wiring

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118449 - Custom Fit Tekonsha Trailer Hitch 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 - no cutting, splicing or tapping required. Powered ModuLite reduces strain on wiring system. Call 800-298-8924 to order Tekonsha custom fit vehicle wiring part number 118449 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 (585)
  • Q & A (342)
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  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring

  • Custom Fit
  • Trailer Hitch Wiring
  • Tekonsha
  • 4 Flat
  • 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 - no cutting, splicing or tapping required. 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 - no cutting or splicing of wires
  • 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: 2.1 amps per circuit
    • Tail lights: 5.6 amps per circuit
  • 1-Year limited warranty


Installation on 2014 and 2015 Toyota Highlander

2014-15 Toyota Highlander connection points

This custom-fit T-One connector plugs into your vehicle's wiring harness. The connection points for the 4-way tow harness and the ModuLite (converter) are located underneath the spare tire compartment. Once you've plugged in the ModuLite, locate the "towing fuse" position in your fuse box and insert the included 10-amp fuse.


Installation on 2013 and Earlier Toyota Highlander

This custom-fit T-One connector plugs into your vehicle's wiring harness. The connection point for the 4-way tow harness is located behind the driver's-side interior trim panel in your rear cargo area. The ModuLite plugs into the factory wiring harness beneath your dash, on the driver's side. Once you've plugged in the ModuLite, locate the "towing fuse" position in your fuse box and insert the included 10-amp fuse.


Once installation is complete, the 4-way flat connector will be stowed in an out-of-the-way location within your cargo area.


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.



118449 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite

Item # 118449

Installation Details 118449 Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118449

Average Customer Rating:  4.9 out of 5 stars   (585 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 - no cutting, splicing or tapping required. Powered ModuLite reduces strain on wiring system.

- 118449
by:

Great hitch!! Relatively easy to install and at a great savings over what you would pay at the dealership. I just pull a utility trailer and don't need electric brakes. I bought the electrical kit that allowed me to connect to the factory wiring with no cutting/splicing. I saw a Youtube video in which a fellow used a floor jack with the hitch connected with Vicegrip pliers and used that example to install by myself. Completely satisfied with the Draw-Tite hitch and etrailer.com 690536


Comments
Everything working fine, still completely satisfied with this purchase.
Terry C - 08/18/2020

97490

- 118449
by:
2012 Toyota Highlander

This is a very good product and was easy to install with the help of the video online. However the wire running from the back to the trailer hookup was short. Another 8-12 inches would have brought the reach to the ball where it should lead to. I had to rerun the wire out the back of the tailgate so it would reach the trailer hookup. For about the $50 I spent with shipping I would have expected a little more slack. I will now have to get a extension so I can run the wire underneath as it should be. 66481



- 118449
by:
2011 Toyota Highlander

Ultra simple and straightforward installation. Literally a snap. Tying back wires and tucking everything away took the most time. About an hour in all (I'm slow). Great product. 679559



- 118449
by:

Very easy to install comes with everything you need. only thing would be nice is if the lead for the plug was like 6 inches long for the way i routed it 707377



- 118449
by:
2013 Toyota Highlander

Got this wiring harness a year ago when adding a hitch to my 2012 Toyota Highlander. Was a perfect fit and the length between the internal connector and the outside connector was more than adequate. I modified the Highlander's factory rubber plug in the routing hole by cutting a slice in half of the plug's diameter then drilling out a hole in the plug just large enough to accommodate the wire. Provides a perfect seal. The harness's external connector is solid and reliable and, surprisingly, the connector's rubber cover cap stays on through car washes and foul weather. I've used the connector 13 times since the installation and it does the job every time. 358357


Comments
Still working great and the rubber connector cap stays on. Good add it gets!
Bassic - 03/26/2018

36449

- 118449
by:
2011 Toyota Highlander

Great product. Easy to install (2011 Highlander SE). Fit perfectly. I ran my wiring thru the rubber grommet under the left tray and then under the chassis as described in another customer's review (my pic is prior to sealing the cut with silicone). The product's instruction sheet was good but pics a bit hard to see clearly. etrailer.com's videos really helped. Disclaimer: the wire routing described is not spec'd by the mfr. in the instructions. It's only an option for you if you choose. 21877



- 118449
by:
2017 Toyota Highlander

This was easy to install and the instructions were great. My rating has more to do with the design. The converter wires are not long enough. As it stands now the fuse is now found under the tool tray (2017 Toyota Highlander). So if that fuse blows, the back part of the interior will have to be disassembled, not a pleasant thought if we are on the road. The wires should be long enough to plug into the Highlander wiring and then extend so that the fuse sits under the container tray on the far left side of the vehicle. This is a readily accessible compartment where it would be easy to change the fuse even on the road. Similarly, the 4 pole wires could be longer so they can be routed under the vehicle. On the 2017 Highlander there is a grommet on the far left side under the container compartment to allow the wire to be routed easily to the underside of the vehicle. But from the connection point in the vehicle (about midpoint) there is not enough length of wire to route the 4 pole connector out the grommet and then back to the center point where the hitch is. I am not a fan of draping the wires out through the hatch, but that is the only viable option at this point. So good product but needs more length to both components to make it optimally functional. 416952



- 118449
by:

There are a three things that really stood out for me. First, the installation instructions were easy to follow and involved little "trial and error". Although having three people guide the hitch into place for initial attachment is recommended. The wiring harness was easy-peasy! Second, I use this hitch mostly for pulling light loads around town, but, the week after installation I pulled a 12' tandem-wheel cargo trailer full of furniture over 800 miles through three mountain passes without a problem. Third, and more service related, the self-help tips on etrailer's website are invaluable. 478210



- 118449
by:
2012 Toyota Highlander

Haven't towed yet, but assume it will work fine. The instructions are lacking for the install in the back. Removal of the cover behind the 3rd roll seat in my 2012 Highlander is necessary to remove the tray under which is the plugin. I just had to pull it out. There are hidden plastic clips that could break, but there is no way that I could see to squeeze the tabs to remove the cover. Fortunately, I didn't break the tabs. Also the wire is too barely long enough to reach the hitch if it is run down through the bottom of the tray to the hitch rather than hanging it out of the trunk per the instructions. 55047



- 118449
by:
2011 Toyota Highlander

Installed on a 2011 Toyota Highlander Base Model Although the instructions missed some parts on my 3rd row seating model, they were very readable and the installation went quickly. I'll only point out a few things I saw that strayed from the written word, and something that I "modified" for your consideration. I hope this is not considered something that would affect safety/warranty. Under the dash, the converter box has sticky tape. I couldn't find anything that this would stick to (it just came off once stuck), so I just zip tied it in place. In the back, there are no instructions on how to remove the "folding cover" for the third row seat. I ended up just pulling it out, which probably wasn't the best. I got lucky, and none of the blind fasteners broke off. Once this folding cover is removed, there's a sticky "tab" that goes over the box over the trailer lighting connector. It's straight forward enough, but not explicitly mentioned. I did not like the idea of the 4 way flat sticking out the back door. Maybe it would be okay for occasional use, but I'd rather have it under the vehicle. Plus, I use a lighted hitch cover that would not work well if the wire went out the door. Under the tray that is removed to access the trailer connector, there is a large drain/access plug in the steel floor. I removed this plug, then used a sharp utility knife to X out the center of the rubber plug. I only cut enough out to allow the vehicle connector (not the trailer connector, which is larger) to be pushed through; up from the bottom. I replaced the plug in the vehicle, then routed the wires along a factory harness to the connector. I filled the rubber plug with silicone to stop water and fumes from entering the cabin, then replaced all the interior bins and covers. Under the car, the wiring set is just long enough to reach the hitch. Here I have it plugged into a lighted hitch cover. I keep a 4 foot 4 way flat extension in the vehicle with the draw bar for when I'm towing. Overall, I'm very satisfied with etrailer.com and their products. Not everything goes to plan, but the products themselves are very good. The price of this DIY job was 1/3 of the cost that the dealer wanted, and I know it was done right. I will buy from them again. (In the pic, the hitch wiring lights up my hitch cover, which I didn't buy from etrailer.com, but had from a previous vehicle). 8703



- 118449
by:

Product is great. Only problem is that the instructions didn’t tell which space to put the 10 amp fuse. Had to find on internet. Overall very satisfied. 691494



- 118449
by:
2010 Toyota Highlander

This is my second! I was towing a boat home, which wasn't hooked up in 10 years. Something was wrong with the trailer and blew the fuse. I didn't have the 10 amp fuse to replace it, and I was 80 miles from home. I checked the wiring on the trailer to make sure it was routed correctly. I took a chance and used a 15 amp fuse to avoid a costly ticket on the interstate. It worked, but I did something wrong to the left hand signal. SO, I'm buying another one AND I bought a box of the correct size 10 amp fuses for the underhood AND under dash fuse holders. E trailer got me the part quickly, and despite my stupidity, I paid $100 less than if I went to the dealer. Do a search for Matt D. last year for a review and picture of my hitch and wiring install. 86014



- 118449
by:
2015 Toyota Highlander

Product worked as advertised. After being told by the dealership and the installer of the hitch that my 2012 Highlander had wiring problems and no voltage could be obtained at the rear plugin for the electrical harness for the trailer hitch, I decided to handle the "problem" myself. The dealership quoted a price of $490 to "fix" the problem. The hitch installer opted out completely. I contacted etrailer after viewing their video and having seen the controller which fit under the dash and they reassured me that the controller in the kit would cure the "problem" and that the system was designed for this. I ordered the part and received it a few days later. Installation took about 15 minutes and after testing the installation, everything worked as advertised. Cost was about $50. I can excuse the trailer hitch installer for their ignorance, but the dealership is another story. This is not the first time I have gotten expensive and erroneous information from them, and they seem bent on extracting the maximum amount of cash from their customers, and know no more about their product than any mechanic on the street. By the way, I mentioned the controller solution to the parts manager, the mechanic working on my vehicle, the service manager and the service adviser and ALL were on the same page with the story about having to replace the wiring harness from under the hood to the rear of the vehicle. Etrailer knows their business and, apparantly, knows it better than the dealership. Good video information, fast response to customer inquiries, parts that work, and a great return policy. Now that is customer frienly. 294078


Comments
I have had no problems with the device wiring and it continues to meet my needs.
Joe C - 10/23/2017

29829

- 118449
by:
Toyota Highlander

Installation could not have been easier. The video on the e-trailer website for installation in the Highlander was a great help. Even though the vehicle came with the factory tow-prep package that includes a wiring harness, the T-One harness or equivalent is still required. Go figure. As an earlier reviewer noted, with the third-row seat it is necessary to remove the driver-side flip-up third-row cover (the piece just ahead of the tool kit cover). Easy enough to do by simply laying down the rear seat and prying up the rear edge of the cover to loosen the clips. See the attached photos, the first with the cover in place, and the second with it removed. It is necessary to remove this cover to permit removal of the left-side tray to gain access to the existing harness and plug. One other piece of advice is to thoroughly clean the surface to which the box will be mounted to assure a strong bond with the included two-sided tape. I used alcohol-soaked gauze. The price through e-trailer was the best I could find anywhere, and the service was second-to-none! 19328



- 118449
by:
2013 Toyota Highlander

Great standard shipping time was in stock and ordered Saturday received Tuesday. Installed Tuesday night in no time. The only issue is the install of rear Tow-Plug Adapter on Toyota 2013 Highlander Hybrid is different that the pictures in the instructions. In the Toyota 2013 Highlander Hybrid they (Toyota) moved the 12 volt battery into the back driver side compartment, still has the same connector (see picture) 75257



- 118449
by:

Fast shipping good prices 900071



- 118449
by:

Quick, smooth transaction again. 893061



- 118449
by:

I ordered one set of this item and it was delivered one day earlier than the expected delivered day. It was perfectly fit and easy to instal. I am so happy for it and the prompt service. 892300



- 118449
by:
2018 Toyota Highlander

I Like the trailer hitch, wiring harness, wiring harness plug plug holder, and test plug! Also shout out to your associate Tanith S. Who was of immense help when I had a question on a back ordered part and wanted the main trailer hitch shipped to me. In the end everything came together which was great. Thanks to her! Will recommend your company to friends and associates! 898460



- 118449
by:
2019 Toyota Highlander

Was actually fun to install by myself and the folks at etrailer are incredibly helpful and professional! 892085



- 118449
by: 09/24/2020

Very simple, very easy to connect to a 2016 Highlander. Worked first time. 892061



- 118449
by:

The hitch went installation was smooth and easy. I did a majority of it alone and that wasn’t a problem. The hitch and wiring was also more than half the price of similar setups at other places. 891681



- 118449
by:

Simple, easy install using the instructions provided and videos available online. 887085



- 118449
by:
2013 Toyota Highlander

Once the order was changed the delivery was prompt, thank you 875697



- 118449
by:

Easy to install after you watch the video. I bought the tester just in case, as I have not tried to use it on an actual trailer yet. 870620


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Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

  • Can Brake Controller Install in 2018 Toyota Highlander
    The newest Toyota Highlander we've installed a brake controller in is a 2014 model. I attached the install video to this page to show you the processs. The 2014 and 2018 Highlanders are the same generation though so what you see in the install video would be the same as on your vehicle. Tekonsha (the maker of our nicer brake controllers) has informed us that they have successfully installed brake controllers in your vehicle so I would not anticipate a problem. That said, Toyota is the...
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  • Recommended Trailer Wiring For 2017 Toyota Highlander To Tow Camper With 7-Way Connector
    If you have the factory tow package and have a converter under the dash of your 2017 Highlander the wiring harness I recommend is the Curt T-Connector Vehicle Wiring Harness, part # 56042. This simply plugs into the factory tow package wiring harness located behind the driver side trim panel in the rear cargo area. If you do not have a toe package and converter, I recommend the T-One Vehicle Wiring Harness, part # 118449. The connection points for this are located under the spare tire...
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  • How to Determine if My 2008 Toyota Highlander Has the Factory Tow Package
    If your 2008 Toyota Highlander has a converter box under the dashboard already then you have the factory tow package. To give you an idea of what to look for I've attached a video of the trailer wiring being installed onto a Highlander without the tow package. If you watch around the 30 second mark you will see the converter box being plugged in. Also, you can verify with Toyota using your VIN to be completely sure if your Highlander has the factory tow package. If you do not have...
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  • Which Fuse is Used in Install of Tow Ready # 118449 Trailer Wiring Harness on 2015 Toyota Highlander
    Use the 10 amp fuse. It's okay to use a lower-rated fuse than what the vehicle manufacturer recommends, but you can't use a higher rated fuse. I spoke with my Tow Ready representative, and confirmed that the installation instructions for the # 118449 are correct. I've linked you to an install video showing the # 118449 trailer wiring harness on a 2013 Highlander. The procedure for your 2015 model would be similar.
    view full answer...
  • No Signals on Wiring Harness 56042 in Highlander with Tow Prep Package
    Exactly what is included in a "tow package" can vary considerably. The actual parts included will be different among different vehicle brands, models and production years. You were smart to check for a missing fuse in your Highlander. I suggest another look in case there are additional fuses that are missing. If you have a circuit tester like # 40376 it will be easy to test the vehicle's wiring, where the Curt harness plugs in, to see if the signals are present on the vehicle's wiring....
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  • Recommendation to Install 5-Way Connector on 2018 Toyota Highlander
    It sounds like you are needing to install a 5-Way connector on your 2018 Toyota Highlander, which will allow you to tie the reverse light to the 5th wire to activate the electric lockout on your boat trailer's actuator. The easiest way to do this will be to first install a 4-Way connector on the vehicle. If your Highlander does not have the factory tow package (that would have a converter under the dash), I recommend the Tekonsha T-One Vehicle Wiring Harness # 118449. If you do have...
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  • How to Tap into Reverse Light Circuit for Lockout on Surge Brake Trailer for 2016 Toyota Highlander
    To find the reverse light circuit on a vehicle is pretty easy but it may take digging around in the door panels or interior panels of the vehicle. What you need to do is find the wires that lead into the reverse lights on your vehicle. Test both of them for voltage with the vehicle in reverse (parking brake on and trusted friend applying brake), whichever wire has voltage is the correct circuit to use. The adapter we recommend for converting a 4-way to a 5-way is the part # 20036. The...
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  • Trailer Wiring Harness for 2015 Toyota Highlander
    The Curt T-Connector harness, # C56217 and the Tekonsha T-One Connector, # 118449 are designed for a Toyota Highlander without a factory tow package. The Curt T-Connector # 56042 is designed for a Highlander that has the factory tow package installed. If your Highlander came with a trailer hitch receiver installed, your vehicle probably has the tow package. If you are still not for certain you can contact your local Toyota dealer and have them run the VIN to see if your vehicle came...
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  • How to Determine if a 2018 Toyota Highlander has a Factory Tow Package
    You can have a Toyota dealer run the VIN number to determine how your 2018 Toyota Highlander is equipped. As far as trailer wiring you can check under the dash for any sort of wiring converter. It may or may not be labeled. Or you can find where a wiring harness plugs into the vehicle at the back and then use a circuit tester such as # 40376 to test that connector. Have someone sit in the vehicle and operate the lighting functions while you test the connector. If there is power on that...
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  • 2015 Toyota Highlander XLE Trailer Wiring Harness Recommendation
    The Curt Harness part # 56042 that you referenced is designed as a replacement harness for vehicles like your 2015 Toyota Highlander that came with a factory 4-way. Although Toyota said you have the factory tow package it sounds like you are missing the necessary under dash converter. This is a Toyota part that they might be able to set you up with, but we don't carry it. The best solution I can recommend for you would be to get the part # C56217.
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  • Does the Tekonsha T-One # 118449 Need to be Used for 2012 Toyota Highlander Without Front Converter
    I'm glad that you like the etrailer.com Trailer Hitch Receiver # E98858 and Curt Class III Ball Mount Kit # C45036 that you purchased for your 2012 Toyota Highlander. When it comes to the Curt T-Connector # 56042 that you purchased, you can verify whether your Highlander is equipped with the tow package by contacting your local Toyota dealer with your VIN but the picture you sent in indicates that you don't have the tow package for your Highlander. If you find that your Highlander...
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  • How to Extend a Trailer Wire 4-way by 12 Inches
    If I am understanding you correctly you have a 4-way on your 2012 Toyota Highlander but you are looking for a way to extend the wiring of the 4-way by 12 inches. What I would recommend you get would be a 12 inch Car and Trailer End Extension # 9653P. This product will extend your 4-way by exactly 12 inches and should work well for you.
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  • Adding 7-Way on 2008 Toyota Highlander
    To wire your 2008 Toyota Highlander with a 7-way and 4 pole connector, you'd first need a functional 4-pole trailer connector. Sounds like your Highlander doesn't already have one, so you can install one using part # 118449. With the 4-pole in place, you'll need a brake controller to activate the trailer brakes. I recommend the Tekonsha Prodigy P2, part # 90885. The P2 is very highly rated by our customers and is extremely easy to use. You'll also use our brake controller installation kit,...
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  • What are Differences Between Curt Wiring Harness # C56217 and TowReady Harness # 118449
    Both Curt wiring harness # C56217 and TowReady # 118449 are fits for the 2015 Toyota Highlander without the factory tow package. They differ in their maximum current output capability. The Curt harness has a maximum output of 3-amps per stop/turn circuit and 6-amps for the taillights. TowReady harness # 118449 has a maximum output of 2.1-amps per stop/turn circuit and 5.6-amps for the taillight circuit. Generally its best to have more capacity to help ensure you do not overload the harness.
    view full answer...
  • Brake Controller Wiring for a 2008 Toyota Highlander Sport
    You will actually need the T-One Vehicle Wiring Harness with 4 Pole Trailer Connector, item # 118449, for your vehicle and the, item # ETBC7, Brake Controller Installation Kit, along with the brake controller of your choice. I recommend going with a proportional controller, like Tekonsha Prodigy part # 90885. The following link below will take you to the recommended brake controllers for your Highlander. You will need to hard wire the additional brake, power and auxiliary functions that...
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  • What is the Purpose of the ModuLite Unit for the T-One Wiring Kit on a 2019 Toyota Highlander
    The powered ModuLite unit that comes with the Tekonsha T-One # 118449 that you referenced ensures that the wiring output of your 2019 Toyota Highlander matches that of your trailer (as it has a separate wiring system and a trailer uses a combined wiring system) plus it helps protect the OEM wiring on your Highlander. If the wiring on your trailer were to go bad then it could cause your vehicle wiring to malfunction and you would have to take the Highlander to a shop to trace down the issue...
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  • How To Determine if the 2018 Toyota Highlander Has A Tow Package For Trailer Wiring
    I am happy to help you determine if your 2018 Toyota Highlander has a tow package or not. The easiest way is to visually inspect your vehicle on your own. If you take a look at the video for part # 118449 that I attached on a 2018 Toyota Highlander without a tow package he removes the back tray in the rear cargo area to find the plugs he needs to plug the wiring harness into. If you remove the cargo area tray and you have two plugs (one for a converter and one for the wiring harness) then...
    view full answer...
  • Trailer Lights Not Working After Installing Trailer Wiring Harness in a 2013 Toyota Highlander
    There are 2 fuses associated with wiring harness # 118449 for your 2013 Toyota Highlander. There should be a 10 amp towing fuse that will need to be installed in the fuse panel. There is also a 10 amp fuse for power to the converter box that is in line with the wiring. If either fuse is missing or blown then it will not work. The 30 amp "towing" fuse will also need to be present and not blown for the harness to work. Most Highlanders already have it installed but it is not out of the...
    view full answer...
  • How to Determine if 2019 Toyota Highlander Has Factory Tow Package for Wiring Harness
    There are a couple ways you can determine whether or not your 2019 Toyota Highlander is equipped with the factory tow package. The first method consists of simply looking for the plug(s) that the appropriate trailer harness would connect to; either the Tekonsha T-One # 118449 if you don't have the tow package or the Curt T-Connector # 56042 if you do. With regards to wiring the tow package essentially provides the needed converter box, so it's not included/needed with the Curt harness....
    view full answer...
  • Wiring Harness for 2008 Toyota Highlander Pre-wired
    Yes, the # 118449 T-One wiring harness is the correct custom-fit wiring harness for your Highlander. If you have a trailer with electric brakes, you will need a brake controller to activate them and a 7-way plug for the back of your Highlander. We have a great selection of brake controllers. I suggest the Prodigy P3 # 90195, which is simple to install and operate, and offers a smooth stop. You will also need # ETBC7, which turns the 4-pole plug into a 7-pole plug and also has the wiring...
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  • Brake Controller Install on 2010 Toyota Highlander
    Installing a Brake Controller on your Highlander is certainly possible. As a first step, you will need to choose a brake controller. I would recommend the Tekonsha Prodigy P2, part # 90885. The P2 is our best selling brake controller, and is simple to use and set up. To install the controller, we offer a Brake Controller Installation Kit, part # ETBC7. The kit contains everything necessary to complete the installation, including wire, circuit breakers, hardware and the adapter that will...
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  • 2013 Toyota Limited Highlander 7-Way and Trailer Hitch Recommendation
    You will need to start with a 4-way (if you do not have one). For that you would want the # 118449. Now if your trailer does not have brakes all you would need is the part # 37185 as an adapter to convert the 4-way to a 7-way. If you do have trailer brakes you would need the # ETBC7 instead of the # 37185 and a brake controller. This kit comes with everything needed to wire up the 7-way and install a brake controller. For a brake controller I would recommend the Prodigy P2 Brake...
    view full answer...
  • How to Install Trailer Wiring in a 2014 Toyota Highlander
    They did change the installation point for the installation of either the Curt Wiring harness part # C56217 or the Tow Ready wiring harness part # 118449 on your 2014 Toyota Highlander. Both Connection points are now at the rear of the vehicle. You will need to open the hatch, remove the rear panels and then just behind the threshold you will see both connectors. Check out the picture I attached. The letter H picture shows both connectors.
    view full answer...
  • Trailer Wiring Recommendation for 2017 Toyota Highlander
    The recommended trailer wiring harness for your 2017 Toyota Highlander is the Tekonsha part # 118449 which I attached an install video for. We like Tekonsha harnesses the best as they tend to be the most reliable. If you can find a grommeted hole in the rear cargo area of your vehicle you could route the 4-way through that, but you should note that it is actually preferred to keep the trailer wiring stored on the interior of the vehicle. Having it stored there keeps it protected from...
    view full answer...
  • 2008 Toyota Highlander Hybrid 7-Way Trailer Wiring Kit Recommendation
    You will need to start with a 4-way (if you do not have one) installed on your 2008 Toyota Highlander to be able to have a 7-way. For that you would want the # 118449. Now if your trailer does not have brakes all you would need is the part # 37185 as an adapter to convert the 4-way to a 7-way. If you do have trailer brakes you would need the # ETBC7 instead of the # 37185 and a brake controller. This kit comes with everything needed to wire up the 7-way and install a brake controller. For...
    view full answer...
  • Function of Under Dash Converter in Trailer Wiring Hanress # 118449 for a 2008 Toyota Highlander
    On the 2008 Toyota Highlander, the component that connects under the dash is the converter box. This is used to convert the 3 wire vehicle signals into 2 wire signals used by trailers by combining the directional and brake light signals into a single circuit to match the wiring set-up of the trailer. The signals come into the converter which converts then for trailer use and then it sends the converted signals back through the system to the rear of the vehicle where the second harness...
    view full answer...
  • Installing 4-Pole Trailer Connector Part 118449 on a 2011 Toyota Highlander with Towing Prep Package
    By Pre-Wired Harness, Toyota means that some, but not all of the wiring has been ran to provide a trailer connector. If the vehicle does not already have the 4-pole connector at the rear bumper, you will need part # 118449. Installation is pretty simple. The harness has two parts, the converter and the 4-pole connector itself. The converter plugs in under the dashboard, and the wiring harness with the 4-pole connector on the end plugs into the connection point located under the floor,...
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Info for this part was:

Expert Research:
Mike L
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Video Edited:
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Test Fit:
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