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Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Toyota and Lexus

Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Toyota and Lexus

Item # 3040-P
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Accessories and Parts 3040-P - Wiring Adapter - Tekonsha
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Install your electric brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your brake controller and then plug the other end into the built-in harness beneath your 's dash. Call 800-298-1624 to order Tekonsha accessories and parts part number 3040-P or order online at etrailer.com. Free expert support on all Tekonsha products. Guaranteed Lowest Price and Fastest Shipping for Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Toyota and Lexus. Accessories and Parts reviews from real customers.
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2015 Toyota Tacoma - Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Toyota and Lexus

  • Trailer Brake Controller
  • Wiring Adapter
  • Plugs into Brake Controller
  • Tekonsha
  • Vehicle Specific

Install your electric brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your brake controller and then plug the other end into the built-in harness beneath your 's dash.


Features:

  • Wiring adapter eases installation of your electric brake controller
  • Custom connector end plugs into the built-in port beneath the dash of your vehicle
  • Other end plugs into the back of your electric brake controller
    • Compatible time-delayed brake controllers: Draw-Tite Activator I (5100), Draw-Tite Activator II (5500), Draw-Tite Activator III (5520) and Tekonsha PowerTrac (39523)
    • Compatible proportional brake controllers: Tekonsha Prodigy (90185), Tekonsha P2 (90885), Tekonsha P3 (90195), Tekonsha Primus IQ (TK90160) and Tekonsha Voyager (39510)
  • Wiring length: 32"
  • Limited 1-year warranty


Installation of Tekonsha Brake Controller Adapter

This adapter plugs into the 5-pin connector on your vehicle's built-in brake control wiring harness. The harness is located underneath the dash, to the left of the steering column, taped to another harness near the emergency brake pedal.


To install your electric brake controller you need to connect the wiring of the controller to your vehicle. Certain manufacturers offer pre-wired options, typically known as tow packages, wherein these wires are run for you from the dash to the trailer connector on the back of your vehicle. Often, a brake controller wiring harness is included with your tow package. This harness plugs into a port beneath your dash and connects to the four wires of the brake controller. If, however, you have a brake controller with a plug in place of the four loose wires, you can use the Tekonsha adapter.


This adapter requires no hardwiring. It is designed to plug directly into your electric brake controller for the simplest installation possible. Because there are no wires to connect, installation is not permanent. You can unplug and remove your brake controller at any time and securely stow it away.



3040-P Tekonsha Brake Control Wiring Adapter with 2 Plugs

Installation Details 3040-P Installation instructions

California residents: click here



Customer Reviews

Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Toyota and Lexus - 3040-P

Average Customer Rating:  4.9 out of 5 stars   (1202 Customer Reviews)

Install your electric brake controller quickly and easily with this custom wiring adapter. Simply plug one end of the adapter into your brake controller and then plug the other end into the built-in harness beneath your vehicle's dash.

- 3040-P
by:
2010 Toyota Tacoma

I appreciate how helpful the site was in identifying the right part for my vehicle. The site's videos showing installation were helpful for finding the connection to the vehicle wiring. Less so for the rest of the installation since I prefer a mount to the right of the steering column. I mounted mine in place of the in-dash but easily removable key/coin/wallet tray on my Tacoma using 3M dual lock fasteners (somewhat like velcro). When I'm not using the controller, I can easily remove it and its mount and put the in-dash tray back if/when I want to. The harness is just barely long enough to do this, so another two inches in length would be much appreciated. FWIW, I ran the wiring above the steering column. Not sure, but perhaps I'd get a little more slack if I'd gone below instead. Though it doesn't look like it in the photo, it is mounted parallel with the centerline of the vehicle.



- 3040-P
by:

Semi fast shipping. 2 days late but still arrived in time to install it. Product is as described online. Controller and wiring adapter looks good and easy to install. The hard part is where to install so it'll look nice and clean. Can't wait to go pickup travel trail. No photos yet.


Comments
I couldn’t be happier with this product. It works like a charm and way way easy to use. Highly recommended.
Bee - 10/07/2021


- 3040-P
by:

Perfectly matched item for my truck/trailer connections. It was very easy to install and arrived in just a few days. I haven't had any problems with the wiring harness.



- 3040-P
by:
2020 Toyota Sequoia

The wiring harness could not have been easier to install, but it did take three service techs to locate the vehicle plug under the dash. etrailer is great. Package was shipped same day and arrived on the given date, although USPS delivered at 9:30 at night. Communication and follow-up from etrailer was a pleasant surprise. Will definitely shop here again.



- 3040-P
by:
Toyota Tundra

It would be easy to have this part order and install on the Tundra. i went one step further and end up using the wiring in the box with P3 Trailer brake and had to splice the wiring to make longer extension in order to install the P3 in the empty slot between the lighter and 12v socket which make is more customized look and out of way. Would be cool if they offer longer version for someone who want to install it somewhere else behind the driver's spot zone.


Comments
Product been working great. I even kept the console part and move it newer Tundra truck that I brought and bigger camper. Work better than I expected. I did use the bracket that come with the controller and mounted it. So I wouldnt have to worry about it coming loose or being in so far in the console. It also allow me to use the manual brake easily.
gregory a - 08/09/2017



- 3040-P
by:
2014 Toyota Tundra

Purchased brake controller for my 2014 Tuna. excellent order/shipping/receiving time.Received everything I needed with order in a very timely fashion. Website made it very easy to find and decide on exactly what I wanted. Etrailer will be my first choice for finding the accessories I need in the future. Purchased Tekonsha P3 brake controller and is the best thing to a factory installed controller I have encountered.


Comments
WOW! Somebody that actually cares! This email was a real surprise. Yes I amstill using the controller and it works better than any I have ever owned. Idefinitely recommend I as well as etrailer.com to everyone interested.Thanks for caring about your customers!
Henr L - 12/28/2017



- 3040-P
by:

Pictures of the install. Approximately a 20 min job. First picture my finger is pointing to the factory plug with the etrailer supplied harness plugged in. Note the harness did not specify that the white common with the ring terminal should be connected to ground. But then again that SHOULD be obvious. I will be towing this weekend so I will rate the product then. One minor gripe is that there is always power to the unit which is a battery drain (as evidenced with the key out of the ignition and the unit stayed on) Not sure as to the impact but the controller can always be unplugged or removed. Sorry for the dirty floor mats in the photos.


Comments
Just a quick note, the controller has an automatic shut-off. After 15 minutes of the truck powering off and sitting still, the control powers down. As soon as it sees movement, it powers back on.
-- Etrailer Expert Patrick B - 01/30/2014

Comments
So you ran ground to negative side of battery? Or just on the frame interior somewhere?
-- comment by: Trevor - 06/29/2014

For this harness you can either run the ground to the negative side of the battery, or use a know ground location within the vehicle. Running the ground to the negative side of the battery will yield a better connection, however you may have to extend the wire to reach the battery. Either way you choose to ground the controller it is always recommend to test the brake controller at slow speeds and make sure that it is functioning properly before starting a long trip.

-- Etrailer Expert Rachael H - 7/1/2014


- 3040-P
by:

This harness made the installation of the Tekonsha brake controller as easy as plug and play. eTrailer went above and beyond to resolve shipping delays and I received my order one day late, but before I departed on a trip where I needed the controller. Thank you!



- 3040-P
by:
Toyota Tundra

Needed to connect the Tekonsha P3 trailer brake to at least some models of Toyota Tundra. Easy to install, plug and play basically.



- 3040-P
by:
2008 Toyota Tacoma

We ordered a part for the 2008 Land Cruiser and was told that it's the same installation. IT IS NOT! The connection to the harness is not in the same location as Tacoma. After looking for more than an hour, I got smart and found some info on another website. Even the manufacture has the info wrong. So, if you have a 200 series Land Cruiser, your plug is located under the dash behind the switches for the mirror. You will need to take apart the lower dash panel and then push out the switch panel. There is no need to detach any switch, it all hangs out just fine. See photos for the location of the plug. Plug the adapter in from there you can follow the instructions.


Comments
Thanks for the awesome review. Good info and really helpful for Land Cruiser folks.
-- Etrailer Expert Patrick B - 09/10/2013


- 3040-P
by:
2010 Toyota Sequoia

I bought this to upfit my 2010 Toyota Sequoia which did not have an OEM trailer brake system in place. As the SUV was already set up with the 7 pin connection, this unit was literally plug and play. The most difficult part of the installation was removing the interior side wall and locating the wiring harness to plug into. The unit did need a wiring harness adapter for the specific vehicle but this was plug and play also. There were no other wire splicing or connections needed. Performance of the unit has been great. The proportional control works perfectly and everything is customizable. I highly recommend this unit.



- 3040-P
by:
Toyota Tacoma

Install is very easy once you locate the vehicle's brake controller plug. The plug in a Tacoma is extremely well hidden. It is high above the driver's side kick panel taped behind a plug wrapped in foam. I have attached a photo to help you locate it in a late model Tacoma. Once I found the plug, the install took less than 20 min. The controller works great.


Comments
Very well
Mark N - 06/05/2015



- 3040-P
by:

Arrived sooner than I expected. Watched one helpful installation video (not exactly the same vehicle nor same brake controller but still useful). Took me about an hour and half (with heat breaks) to figure it all out and install. Works great. My only regret is that I waited so long to get to it. Saved over $250 compared to RV repair shop installation.



- 3040-P
by:
2010 Toyota Tacoma

I purchased both the tekonsha controller and wiring adapter for my 2010 tacoma. The installation was easy and effortless. The instructions provided by etrailer made this possible. The contoller works great and i havent had any problems after one year of use.



- 3040-P
by:
2014 Toyota Tundra

I picked up the redarc brake controller and sumo bags. I installed both today. I have to say I'm excited to use both when I pick up my travel trailer. The Redarc is so clean! It might have taken me an hour to install but that was just bc I was deciding how I wanted to run it . Sumo bags took an hour to out on! I cant tell you how great they work yet. But the install was a breeze.



- 3040-P
by:

I'm new to rving. Needed to get trailer brake control for my truck. Found the unit I needed on the website. Received it and it took literally 10 minutes to install. Plug and play as advertised. Price was good too. Thanks guys and gals. Etrailer will be my go to place for all my future needs



- 3040-P
by:

Give me a brake! This product is great and installed without a hitch.



- 3040-P
by:

Although the products are a gift for my son, I just wanted to say thank you to Roger and the rest of the etrailer team for helping me find the correct product for my son's truck and trailer. The price was great and they arrived in just a few days after I ordered them. That is great customer service in my book. Merry Christmas to you all too!



- 3040-p
by:
2013 Dodge Ram Pickup

Installed P3 this weekend in 2013 Tundra Crewmax with towing package and pre-wire. Extremely easy, even with the center console installation. Will let the photos tell the story. Did have to combine the P3 included harness with the additional OEM harness to gain the length I needed. Plug and play with the pre-wire. Hooked up to trailer and set boost levels for varying loads. Works great! Vast improvement over older model Tekonsha controller in my Ram 2500 Diesel. Pull a Kiefer BP horse trailer: about 3600 lbs empty, 7500 with 3 quarter horses and gear. Usually pull 6-8 times per year, with only 1-2 horses. Short distance and flat terrain. It took about an hour to install. Dad is a retired USAF/FAA radar technician with every tool known to man. He QC'd the job. Will try to write better review later.



- 3040-P
by:

Made 7000 mile trip last summer to northwest and back with no problems associated with trailer braking.



- 3040-P
by:
Lexus GX 460

Works as designed in our GX 460, plug and play!



- 3040-P
by:
2003 Toyota Sequoia

Easy plug and play installation on my 2003 Toyota Sequoia with the factory tow option (maybe the tow package is standard equip, I purchased the vehicle used). My 03 Sequoia is 2WD and has a frame mounted hitch receiver, 7 way round trailer wiring connector and a transmission cooler. The factory harness is behind the left front kick panel. Remove the drivers door sill trim and one plastic nut on the cover. Factory pigtail is capped and taped. The controller harness could have been a bit longer for my setup on the right side of the steering column.



- 3040-P
by:

Every thing hooked up no problem. I have not used it yet. But I do not forsee any issues.



- 3040-P
by:

Over all a good experience. Part 3040-p, the length was barely enough. Made for a tight(not in a good way) insulation. But, brake controller now working.



- 3040-P
by:

I bought a new trailer and wanted to go camping. I did not have a brake controller. I called around and to get a Prodigy P2 installed it would be a 2 hour drive to the dealership plus about $200 bucks for parts and another $115 for an hour of labor. I found this website, got the prodigy P3 plus 2 day shipping and installed it with their super simple video in 15 minutes all for less than $200. I was very pleased to say the least. I highly recommend them. Service was outstanding! Video instructions spot on and simple.


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Ask the Experts about this Tekonsha Accessories and Parts

  • Brake Controller Install Harness Location for Prodigy P2 in a 2015 Toyota Tacoma
    To install the Prodigy P2 part # 90885 in your 2015 Toyota Tacoma the install harness part # 3040-P is the correct one to use. The plug in a Tacoma is extremely well hidden. It is high above the driver's side kick panel taped behind a plug wrapped in foam. I have attached a photo to help you locate it in a late model Tacoma. It's the white connector.
    view full answer...
  • How to Install a Brake Controller in a 2015 Toyota Tacoma
    If your 2015 Toyota Tacoma has a factory 7-way the correct install harness would be the part # 3040-P. This adapter plugs into the 5-pin connector on your vehicle's built-in brake control wiring harness. The harness is located underneath the dash, to the left of the steering column, taped to another harness near the emergency brake pedal. See install video I linked. If you do not have a trailer connector at the rear of your vehicle you would need to go a different route. You will...
    view full answer...
  • Why is There an Additional Ground Wire on Tekonsha Plug-In Wiring Adapter for 2015 Toyota Tacoma
    You are correct, the tow package on your 2015 Toyota Tacoma is grounded but the brake controller manufacturers have found that this ground isn't sufficient enough to allow a brake controller to function properly. This is why the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers, # 3040-P, that is designed for your Tacoma, includes an additional ground.
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  • Brake Controller Recommendation and installation for a 2015 Toyota Tacoma with Tow Package
    Yes, to install the Primus IQ Brake Controller part # TK90160 that you referenced in your 2015 Toyota Tacoma with a factory 7-way all you need is the brake controller install harness part # 3040-P that you referenced. I confirmed this with Tekonsha. I attached an install video that shows this harness being used to install a similar controller in a 2012 Tacoma for you to check out as well.
    view full answer...
  • Recommended Trailer Brake Controller for 2015 Toyota Tacoma Towing 13-Foot Scamp Trailer
    Our customers have told us again and again with their purchase decisions and product reviews that the Tekonsha Prodigy P2 trailer brake controller, part # 90885, is easy to set-up and operate and is supremely reliable. This is a superbly engineered brake controller that is a snap to use. Installation method will depend on whether or not your Tacoma has a factory-installed 7-way trailer connector at the rear bumper. If you do have a 7-way then installation will require only the controller...
    view full answer...
  • Installing Tekonsha Prodigy P3 Brake Controller with Tekonsha Plug-In Adapter in 2015 Toyota Tacoma
    To install the Tekonsha Prodigy P3 Brake Controller # 90195 with the Tekonsha Plug-in Wiring Adapter # 3040-P, the brake controller port will be located underneath and left of the steering column, taped to another harness near the emergency brake pedal. The port is a 5-pin connector. The first place to begin looking is at the left kick panel. I spoke with my contact at Tekonsha, and he said that for years the port was located above and behind the left kick panel, as in the installation...
    view full answer...
  • Brake Controller Wiring Harness for a 2015 Toyota Tacoma
    The Tekonsha brake controller wiring harness for the 2015 Toyota Tacoma is # 3040-P. I have linked a video showing an installation using this harness. Please note that the extra white ground wire in the harness does need to be attached to a clean metal surface to create an adequate ground for the brake controller.
    view full answer...
  • Solution for Extra Wire to Install Prodigy P2 in Center Console on 2015 Toyota Tacoma
    The wiring adapter # 3040-P used to install the Prodigy P2 # 90885 to your 2015 Toyota Tacoma only comes in one length so you'll have to do some cutting and splicing to install the brake controller at the further location that you mentioned. Luckily you should have received the universal pigtail with the P2 controller so it's a simply matter of splicing the wiring in per color and you won't have any guesswork involved.
    view full answer...
  • Where to Find Brake Controller Install Port On 2015 Toyota Tacoma
    We had the chance to install a brake controller in a similar 2012 Toyota Tacoma as your 2015 model which will use the same # 3040-P harness and we found it behind a taped up bundle of wire to the left of the emergency brake pedal. I attached a picture that shows our installer pulling it out from behind the wiring. I also attached the install video for you to check out below to walk you through the entire process.
    view full answer...
  • Installing Trailer Brake Controller on 2015 Toyota Tacoma with Tow Package
    Yes, if your 2015 Toyota Tacoma came equipped with the factory 7-Way connector at the rear there will be an empty brake controller port behind the dash to which you can install your Tekonsha Prodigy P2 Brake Controller # 90885 using the Plug-In Adapter Harness # 3040-P. On your Tacoma the port might be pretty well hidden behind other factory wires, as you can see in the install video I attached on an earlier model year.
    view full answer...
  • Brake Controller Connector Location in 2010 Toyota Highlander
    The # 3040-P is confirmed by Tekonsha to be the correct brake controller wiring harness for the 2010 Toyota Tacoma, as long as it's equipped with the factory 7-way. If you don't have the factory 7-way, the connector under the dash won't be present and you'll need to use the # ETBC7 install kit along with a # 118496 4 pole trailer wiring harness. This is shown in the linked video. From the photo you kindly provided (assuming again that you have the factory 7-way) it looks like you...
    view full answer...
    Image 1 for
  • Which Tekonsha Brake Controller Install Harness Fits 2019 Toyota Tacoma
    Tekonsha does have a brake controller install harness that fits your 2019 Toyota Tacoma with the # 3031-P but the # 3040-P does not fit. This will work great with the P3 brake controller part # 90195 which many refer to as the best brake controller out there. If you type your question in to the search box on the top right part of your screen and then press the tab that says "questions" or "Q and A" you'll see all question pages we've made related to your search terms.
    view full answer...
  • Factory Plug Location on 2014 Lexus GX 460 for Installing Tekonsha Primus IQ Brake Controller
    Yes, the factory plug you found above the brake pedal on your 2014 Lexus GX 460 is indeed what you will connect the Plug-In Wiring Adapter # 3040-P to. One end of the adapter will connect directly to this port in your vehicle, and the other end will plug right into your Tekonsha Primus IQ Trailer Brake Controller # TK90160. This is all you need to do to install the brake controller on your Lexus GX 460.
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    Image 1 for Image 2 for
  • What Is The Purpose Of Fifth Wire On Vehicle-Side Brake Controller Port On 2008 Toyota Tundra
    The fifth wire on the Tundra brake controller connector is for illumination. This is not used on any of the brake controller we carry and when you install the Tekonsha # 3040-P plug-in adapter, the fifth wire is basically ignored. The 3040-P is confirmed as a fit for your Tundra, but it is designed for Draw-Tite # 5504 and Tekonsha, # 39523, # 90885, # 90195, # TK90160, and # 39510 brake controllers. If you do not have a brake controller for your Tundra, I recommend the Prodigy...
    view full answer...
  • Location Of Brake Controller Connector In 2003 Toyota Land Cruiser
    If your Land Cruiser was equipped with the factory installed 7-way trailer connector at the rear bumper, it will have the brake controller connector located under the dashboard. The connector will be taped to another wiring harness somewhere near the top of the emergency brake pedal. The connector will likely be covered with tape, so it could be difficult to locate. If you find a big ball of tape wrapped around a wiring harness, you've probably found it. The # 3040-P you've referenced is...
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  • Recommended Brake Controller and Wiring Harness for 2012 Toyota Tundra Console
    The Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Toyota and Lexus # 3040-P is a great option for Tekonsha brake controller wiring in the traditional location. However, because you desire the controller to be a part of your console, there are better options available for that fit. I recommend the Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Pigtail - Toyota # 3040-S along with the Redarc Tow-Pro Elite Trailer Brake Controller # RED44FR which will...
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    Image 1 for
  • Trailer Brake Controller Plug-In Adapter for 2016 Toyota Land Cruiser
    If your 2016 Toyota Land Cruiser has the factory-7-Way installed, the Tekonsha Plug-In Wiring Adapter # 3040-P referenced in your question is confirmed to fit and will be all you need to install a trailer brake controller like the Tekonsha Prodigy P3 # 90195. One end of the adapter will plug into the brake controller and the other end will connect to the built-in harness beneath your vehicle's dash. The Prodigy P3 is a great proportional brake controller that will activate your trailer's...
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  • Recommended Brake Controller for 2010 Toyota Tundra Towing 7000 lb Travel Trailer
    Brake Controllers are not vehicle specific, so just about any controller would work for you. This being said, I would recommend you go with a proportional type brake controller. A proportional controller features an internal sensor that can determine how quickly and at what intensity the tow vehicle is braking. The controller will then send the appropriate amount of voltage to the trailer brakes so that the trailer and tow vehicle stop at the same rate. This makes for a safer stopping action,...
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  • Correct Tekonsha Brake Controller Adapter for 2005 Toyota Tundra
    Part 3017-S is for the 2015 Toyota Tundra. In order to get you the correct part I would need to know what brake controller you have as well as if your 2005 Tundra has a factory 7-way or not.
    view full answer...
  • Is the Extra Ground Wire Required to Install a Tekonsha P3 Brake Controller in a 2013 Toyota Tundra
    Yes, you will want to ground the additional white wire of the Tekonsha Plug in Wiring Adapter part # 3040-P to install your Tekonsha Prodigy P3 Brake Controller part # 90195. The additional ground is necessary for aftermarket controllers like the P3. When we installed this harness on a very similar Tundra as yours we used a self tapper and drilled it into the sheet metal by the emergency brake pedal. See the video I attached. Fast forward to the :30 second mark to see exactly where.
    view full answer...
  • Best Value Brake Controller For 2006 Lexus GX 470 With Factory Tow Package
    Thanks for that info, and let's start with the brake controller port in your 2006 Lexus GX 470. While we haven't done an install to have a video, I did some research and the brake controller port require you to remove the panel under the steering wheel. It should be down below the steering wheel area, possibly just up and to the right and a white connector that is taped up. I can't quite tell from that angle if that's what you have there, but that should give you a good place to look. As...
    view full answer...
    Image 1 for
  • Where Does a Brake Controller Plug Into on a 2013 Toyota Tacoma
    For your 2013 Toyota Tacoma and a Tekonsha brake controller the correct brake controller wiring harness is # 3040-P. In plugs into a plug on the truck located under the dash to the left of the emergency brake pedal. Some times the factory plug can fall behind the driver's side kick panel or be tucked up higher and attached to another wire bundle. I have included a link to a video that shows the general area it is located. It is on a 2012 Tacoma which will be the same as on a 2013. If...
    view full answer...
  • Brake Controller Port Location on 2008 Toyota Sequoia
    Since your 2008 Toyota Sequoia came with a factory tow package, you can plug in the wiring harness, # 3040-P into the port on the vehicle. It is located under the dash to the left of and above the the emergency brake. You will remove the panel that is there on the far left, and the connector will be tucked up behind some other harnesses. It will have a white connector. I have included a link to a video that shows the installation of this harness on a 2008 Sequoia just like yours.
    view full answer...

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