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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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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. 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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Tekonsha Accessories and Parts - 3040-P

  • Trailer Brake Controller
  • Wiring Adapter
  • Tekonsha
  • Plugs into Brake Controller
  • 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 vehicle'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

This Product Fits The Following Vehicles



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   (1122 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:

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:
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:
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:
Toyota Tundra

This was an easy plug n play device to allow the Tekonsha brake system be hooked into our Toyota Tundra. We've been using the Tundra with a dump trailer for the past 3 days and the brake system purchased from worked well, as it has for the past year.



- 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:
2003 Toyota Tundra

I used the adapter to attach to harness that was supplied be Etrailer. My truck wasn’t wired for a brake controller.



- 3040-P
by:
2012 Toyota Tacoma

Good product. After I finally found the plug on my 2012 Toyota Tacoma I had no problems with this connection cable at all!


Comments
Used several times and have had no problems at all.
T. K - 04/10/2021


- 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:
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:
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:
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:
2008 Toyota Tundra

Great products and quick response, BUT, somehow the Wentzville Post Office sent my order to me via ALASKA, so it was late arriving. I don't think etrailer had anything to do with that! Won't hesitate to order from them again.



- 3040-P
by:

I ordered a brake controller with pigtail for Toyota nd it was delivered quickly. After I installed it a couple weeks later I discovered I didn't have a good connection at the controller. I contacted etrailer right away and they promptly sent me a new pigtail which solved the problem. My only complaint is you have to wait a long time before you can get someone on the phone, but maybe that is because of the coronavirus thing.



- 3040-P
by:

The cable fit and made the Tekonsha brake controller a very easy installation on my Toyota 4 Runner . Phone order was quick and easy with a very knowledgeable and friendly staff. I have ordered several times here and each time it has been a very good experience. Great prices, Great shipping as well as Great sales staff !! A customer for life , I wish all companies were this great to deal with!!!


Comments
It has worked flawlessly, would buy again!
Tim B - 09/19/2020


- 3040-P
by:
Toyota Tacoma

Made the installation of the P3 brake controller for my Toyota Tacoma easy. The only problem was caused by Toytoa. The connector from the truck, not the adapter or P3, was tucked up behind other wiring, hard to see if I had not been told to look for it. Easy, easy installation



- 3040-P
by:

Easy to install. Owners manual had location of factory plug and we installed the entire system in less than an hour. We used the removable bracket so the unit can be stored in the case that was included with the controller when not towing so it is completely out of the way of the drivers legs and knees. We are a collision repair shop and I would rate the ease of installation as relatively easy if you just use common sense and consider wiring location and controller location BEFORE drilling holes in the plastic lower dash cover. Also need to be mindful on the lower air bag that protects the drivers legs in a serious collision and the routing of the wires if you install it on the right side of the steering wheel. We used wire ties and a small plastic wire holder to place the wiring in a secure place that does not rub through the wire insulation or get snagged by the drivers feet. See the attached photos. All work was performed in slightly less than one hour.



- 3040-P
by:

This wiring was exactly as describe , for sure i recommande , will buy again from etrailer



- 3040-P
by:

Worked like a charm! Had to remove some of the lower dash to reach the connection, but a video helped with that. Plugged in the pigtail to my brake controller, and viola - brakes, and lights, for my trailer!


Comments
Easy to install and a pleasure to use. Great product. I’ve got 2 of them. One in the RV and one in my ‘15 Toyota Land Cruiser.
MattC - 09/23/2020


- 3040-P
by:

Worked perfectly on my 2007 Tundra. I had to extend the wires, only because I decided to mount my P3 under the radio. If you were mounting in the normal kick panel location it would work fine as is.



- 3040-P
by:
2008 Toyota Tundra

No hassle hookup. etrailer was awesome, they shipped my P3 and this connector immediately and provided great tracking. They also followed up afterward. Excellent customer service!!! Real customer service is hard to find these days. Thanks etrailer!!! I haven't towed my travel trailer yet but the controller is installed in my 2008 Tundra and looks great. Everything seems to be working as it should. I can't wait to try it out. Regards, Dale V.



- 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.



- 3040-P
by:

Excellent service,product and quick shipping. Plenty of time to install before I pick up my new camper on Monday.



- 3040-P
by:



- 3040-P
by:
2014 Toyota Sequoia

Really simple install! Gor my Tekonsha controller hooked up and ready to go in under 1hr


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Ask the Experts about this Tekonsha Accessories and Parts

  • 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 # 331-EBRH-ACCV2 which...
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  • 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...
  • Where Is the Brake Controller Plug Located on a 2008 Lexus LX570?
    For your 2008 Lexus LX570 the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Toyota and Lexus # 3040-P will plug into the factory harness located underneath the dash, to the left of the steering column, taped to another harness near the emergency brake pedal. This is only if you have the factory 7-way. I've attached a video of this installation (one of a Curt connector) on a couple of Toyota's which have the same connection location. If you don't already have the...
    view full answer...
    Image 1 for
  • 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
  • Brake Controller Installation Parts Needed for 2010 Toyota Sequoia
    If by 'install kit' you're referring to a wiring adapter like the # 3040-P you'd looked at, then yes you'll need a wiring adapter to install a brake controller on your 2010 Toyota Sequoia with the factory 7-way. If you haven't yet chosen a brake controller, I'd recommend a proportional model like the Tekonsha Primus, part # TK90160. The Primus is simple to operate, and features a full LED display that will let you know all the diagnostic information as well as power output. You'll also...
    view full answer...
  • 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 # 5100 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...
  • Installation of Ground Wire on Tekonsha Plug in Wiring Adapter for 2006 Toyota 4Runner
    The Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Toyota and Lexus # 3040-P does have the separate white ground wire with ring terminal. It is to be connected to a bolt that connects to a bare metal surface. You may want to simply use a sheet metal screw like # 101131802. I've attached a couple videos to assist.
    view full answer...
  • Wiring Harness for Draw Tite Brake Controller in 2007 Toyota Tundra
    To install the Draw-Tite Activator IV Trailer Brake Controller #5504 in your 2007 Toyota Tundra you will want to use # 3040-P wiring harness adapter. This wiring adapter will plug into your vehicle's factory tow package, which should be located underneath and left of the steering column. You will also want to find an appropriate place to ground your brake controller. The installation instructions for this harness are attached. I have also attached an installation video of a different...
    view full answer...
  • Brake Controller Plug In Location for a 2007 Toyota Land Cruiser
    We have had customers state that the location of the brake controller port on the Toyota Land Cruiser is 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 according to one customer. I have included the pictures they sent to us.
    view full answer...
    Image 1 for Image 2 for
  • Locating Brake Controller Connector on 2015 Toyota Tundra
    As long as your Tundra came with the factory installed 7-way connector at the rear bumper, your truck will have the brake controller connector. For the 2015 model year, Toyota changed the location and the connector on the plug, so instead of the # 3040-P, you'll need the # 3031-P. The connector is located behind the dash panel immediately to the right of the ignition, as shown in the provided photo. If the 7-way isn't factory installed, you'd need to install a controller using an...
    view full answer...
    Image 1 for
  • 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...
    view full answer...
  • 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...
  • Need Wiring Harness To Install Tekonsha Prodigy P2 Brake Controller In 2018 Toyota Sequoia
    I did some research and it looks like nothing significant has been changed with your 2018 Toyota Sequoia compared to previous model years so you will need the Plug-In Wiring Adapter, Item # 3040-P, to install your Prodigy P2, Item # 90885. I have attached a video for you to check out.
    view full answer...
  • 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...
    view full answer...

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