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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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Tekonsha Trailer Brake Controller - 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 800-298-8924 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   (1032 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:
2012 Toyota Tundra

Tekonsha brake controller plug-in wire worked awesome. Clicked right into my 2012 Toyota Tundra and straight into my Tekonsha P3 brake controller. Zip tied excess wire below dash and installation was complete. Recommend this to everyone. 566110



- 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. 99168


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

2052

- 3040-P
by:
2013 Toyota Land Cruiser

The wiring package worked fine for my 2013 Land Cruiser. Previous pictures posted by others were very helpful in identifying the appropriate plug to release behind the switch panel. As stated, it is in a holder, but otherwise easily freed with a small tab on the bottom of the fixture. Further, I was able to locate the Tekonsha controller on the passenger side of the steering column, over my leg operating the accelerator. The space is tight, but sufficient. As another stated, I don't care for the lack of an off button, but it does go to sleep, extinguishing the light. My contribution is that the removal of the switch panel to start the whole operation goes as follows: 1) Using a thin plastic putty knife or equivalent, pry the panel trim at the lower left side first. Take time to safeguard the easily damaged plastic. The first tab came off easily for me. 2) Work upwards on the left side to the top left of the panel. There are tabs at each corner that have a mild spring action to fit and need only gentle pressure. The top trim panel tabs need to go down a bit to release. 3) Coax the third (right top) and fourth (fight bottom) tabs out, taking special note that the entire trim piece is not only secured by the four corner tabs, but a lip engagement where the trim fits under the dash trim immediately to the right of the trim. 4) You may need to lift the trim just to the right of the switch panel to extricate the switch assembly. It is secured by a tab at the top left. Note that the air bag contained behind this trim piece is not compromised by any of these actions. 5) You should now be able to remove the switch panel, albeit with some wriggling. 6) The wiring is long enough to route to the spot I noted, and the ground wire secured at a point to the left and below the assembly that originally held the factory controller plug. It takes a 10 mm wrench and can be easily used as a ground. I did release the trim to the right of the switch trim, and it helped to route the wiring. It powered up but I have not used it yet, so this note is only to help the other Land Cruiser person out there remove the switch trim without a reciprocating saw. 388423


Comments
Thanks for checking the product was flawless.
KRT - 06/06/2018

39348

- 3040-P
by:
2003 Toyota Tundra

Easy plug and play! The factory harness plug is taped up pretty well behind a lot of wires- remove the tape carefully so you don’t cut into any of the hundreds of wires under the dash. Harness length is plenty long enough to tuck the unit near my right knee in a 2003 Tundra. 768410



- 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. 210331



- 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. 11353



- 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. 115202


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.
-- Patrick B - 01/30/2014

2674
Comments
So you ran ground to negative side of battery? Or just on the frame interior somewhere?
-- comment by: Trevor - 06/29/2014

5204

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.

-- Rachael H - 7/1/2014


- 3040-P
by:
2010 Toyota Tundra

excellent product and service highly recommend this company 899600



- 3040-P
by:

Made the work of hooking up my brake controller an easy job. 899565



- 3040-P
by:

Was easy to install 892675



- 3040-P
by:

Don’t know about the product yet, but the service of these people was amazing. Very helpful from helping me make my choice, to expediting shipping! 892021



- 3040-P
by:
2007 Toyota Tundra

A TRUE PLUG AND PLAY device . Easy to install , even easier when I found holes already made for the bracket mount. I bought the truck used and I guess someone else had mounted one of these before me. Only problem is I have a 4 low light flashing now when I hook up to the trailer but that of course in no fault of the controller . I would recommend this controller to anyone who may be considering buying one and installing it themselves . 897856



- 3040-P
by:

Plug and go. No issues. worked perfectl y. 883898



- 3040-P
by:
2014 Toyota Tundra

Couldn't be much easier just plug in and attach ground maid my install correct and simple 883836



- 3040-P
by:

Easy to install 899127



- 3040-P
by:

899088



- 3040-P
by:

Easy to install plug and play. 881467



- 3040-P
by:
2015 Toyota Tacoma

fit right on 2015 Toyota Tacoma..Thank You 881214



- 3040-P
by:

When ever I have ordered one before they only had the vehicle plug missing. The one for th control was there but for the vehicle it's always been missing. this time it will instal quickly and complete. Many thanks. 880366



- 3040-P
by:
2020 Lexus GX 460

878107



- 3040-P
by:
2011 Toyota Tundra

The adapter wire is a must have to make installation easy. Simple plug and play. But I may have had a friday piece because mine did not have good contact. If I moved the controller it would lose contact and shut off. Moving it back and forth indicates the pin contact was not tight. I pulled the pins from the plug and push the contacts out so it would make a firmer contact. After doing that, no more contact loss even after moving the controller in various angles. Other than that, the adapter is a no branier to get. 877810



- 3040-P
by:

This was the wrong Wiring connector as I had to call the Tekonsha factory service to get things straight. It was probably my mistake as my 4Runner is a 2016 876898



- 3040-P
by:

Tha controller made it to my house very fast. I watched an online and installed it in 1/2 an hour very easy thank you 874963



- 3040-P
by:
2008 Toyota Tundra

The connector wouldn’t stay in contact with the brake controller. I had to bend the prongs to get it to stay connected. 870545



- 3040-P
by:

Plug and play wiring harness, worked pe rfectly 869357


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Ask the Experts about this Tekonsha Accessories and Parts

  • 2015 Sequoia SR5 Brake Controller Wiring Harness Location
    On your 2015 Toyota Sequoia SR5, the harness to connect the # 3040-P is located underneath the dash, to the left of the steering column, taped to another harness near the emergency brake pedal. I've attached a video to assist. It is tucked up there and not extremely easy to find. If you don't have the tow package and the wiring you mentioned was added by the dealer or a previous owner, then you will need kit # ETBC7 to complete your vehicle brake controller wiring.
    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...
  • Location Of Factory Brake Controller Port On 2007 Toyota Tundra SR5 w/ Tow Package
    The connector should be located underneath the dash to the left of the steering column. It may be taped to another wire and tucked up and out of the way. I have linked a video installation of brake controller being installed on a 2007 Toyota Tundra using the # 3040-P adapter.
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  • 2006 Toyota 4Runner Brake Controller Install Port Location
    I attached a picture that shows which connector to use as well as an install video that shows the # 3040-P being used to install a brake controller in a similar 2004 4Runner.
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  • Where Does a Brake Controller Plug Into on a 2016 Toyota Tundra
    Brake controllers are not vehicle specific so you can use the one you have with your new 2016 Toyota Tundra. For a brake controller wiring harness that will fit your 2016 Tundra use # 3031-S. One end plugs into the truck. The other end has 4 wires that can be spliced into the brake controller wiring (black is 12 volt power, white is ground, red is input from brake switch, blue is output to trailer brakes). The brake controller harness will plug into a factory port on the truck. It is...
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  • 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.
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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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  • 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...
  • Installing Brake Controller on 2013 Toyota Tacoma w/ Factory Tow Package
    The correct brake controller connector should be located at the top of the kick panel to the left of the emergency brake pedal. The connector should be white in color, like the one shown at about the :30 second mark in the video I've linked you to. One end of the # 3040-P would plug into the connector under the dash, the other end would plug into the brake controller. Is it possible you found the wrong connector? The connector from the glove box is likely the factory provided brake controller...
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  • Installing a Trailer Brake Controller on a 2014 Toyota Tacoma
    If your 2014 Toyota Tacoma came with a factory installed 7-Way trailer connector then the plug-in for a brake controller should be there. Harness # 3040-P is the correct one for your truck and a Tekonsha brake controller. I recommend the P2 # 90885 because it is easy to set up and use and it is reliable. I have linked a video to the right that shows where the controller plugs in. This adapter plugs into the 5-pin connector on your vehicle's built-in brake control wiring harness. The...
    view full answer...
  • Brake Controller Installation on 2006 Toyota Tacoma w/ 7-Way Trailer Connector
    Toyota didn't offer a factory 7-way option for the 2006 Tacoma, so your 7-way was either aftermarket or dealer-installed. I'm assuming that your 7-way is already tapped into the lighting circuits. Look under the dash for a coiled up blue wire, if you find one, it's most likely the brake output circuit connected to the pin in the 5:00 position on your 7-way. You'd need to hardwire the controller, using a kit like our # 5506. If you use a Tekonsha brake controller like the Prodigy...
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  • Location of Brake Controller Port Under Dash of 2015 Toyota Tundra with Factory Tow Package
    The brake controller port for the 2015 Toyota Tundra is located behind the section of the dashboard with the tow/haul button. To reach the connector you will need to locate the notch in the access panel in the center of the dash near the driver's side. Using a trim panel puller like # ALL648544, carefully pry the panel out and undo the locking tabs to remove the panel. You will find the mating connector behind this portion of your dashboard. The correct harness for your 2015 Tundra is...
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  • Brake Controller Wiring Harness for a 2014 Toyota Tundra
    If you have a factory installed 7-way trailer connector you can use # 3040-P Tekonsha Plug-In Wiring Adapter for a Tekonsha Brake Controller, such as the P3 # 90195. If your truck has a factory 4-way you will need to add a 7-way using the Universal Installation Kit for Trailer Brake Controller # ETBC7. The # ETBC7 comes with a 7-way trailer connector and the wiring accessories needed to install a brake controller. I have included some links that explain the # ETBC7 installation.
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  • Locating Brake Controller Port Under Dash of 2007 Toyota Tundra w/ Factory 7-way
    I contacted our representative at Tekonsha and he informed me that the plug should be located under the dash to the left of the brake pedal or behind the kick panel. The plug will more than likely be tucked up behind wires behind the kick panel (see video link at :35 second mark). If the 7-way on your 2007 Toyota Tundra is factory, then you will be able to install your brake controller using the wiring adapter, Tekonsha Wire Replacement, part # 3040-P. The item you selected, Tekonsha...
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  • Location of Factory Brake Controller Port on a 2006 Toyota Tundra
    As long as your 2006 Toyota Tundra has the factory tow package that included a 7-Way trailer plug at the rear of the vehicle, you will be able to find the brake controller port under the dash, to the left of the steering column. It should be taped to another harness near the emergency brake pedal. Also note that there is a second ground wire (white) that will need to be connected in order for the brake controller to function properly. I have included a link to the installation details for...
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  • How to Wire a Brake Controller to a 2003 Toyota Tundra
    Manufacturers aren't always completely consistent when using wiring colors. Some years there can be some variances. For example, it looks like the blue wire you found instead of the red wire is the brake output circuit and should be connected to the blue wire of your controller The black/red wire goes to the black wire of the controller The Green/white wire goes to the red wire of the controller The brown wire goes to the white of the controller The green wire would not be used.
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  • Brake Controller Connector Location on a 2005 Toyota Sequoia
    The brake controller harness on your 2005 Toyota Sequoia can be accessed by removing the kick plate near your emergency brake. The harness itself will be tucked up, and should be taped to another harness near the fuse block. The installation video for the 2008 Toyota Sequoia shows in detail how to find the plug. If you do not already have a brake controller, I would recommend the brake controller # 90885 and the correct wiring harness is # 3040-P, as it will offer a simple, plug-in...
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  • Installing a Brake Controller on a 2003 Toyota Tundra with a 7-Way but Not a Tow Package
    As you probably know, in 2003 Toyota made the Tundra with or with out a factory trailer connector. So if they installed one when you bought it, they might not have run all the wiring for a brake controller. This might be why you only see 4 wires at the 7-Way. I believe this is the case, so you will need to hardwire the brake controller. You will need a brake controller. I recommend the Prodigy, # 90885. It is one of our best selling and highest rated controllers. There are two possible...
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  • Brake Controller and Installation for a 2014 Lexus GX 460
    On your 2014 Lexus GX460 the Tekonsha Plug-In Wiring Adapter # 3040-P that you referenced would simply plug into the connector you found. The brake controller only needs 4 of the circuits in your connector to function. The battery power supply, stoplight circuit, ground, and brake output to run to your factory 7-way. The additional ground wire should be run to a metal surface near the connector. The Toyota ground is not sufficient for aftermarket brake controllers. There should be a...
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  • Parts Needed to Wire Brake Controller to 2012 Toyota Tundra
    Yes, the install harness part # 3040-P is the correct brake controller install harness to install the Draw Tite I Command part # 5535 in your 2012 Toyota Tundra. I attached an install video and a picture that shows where the harness installs on your vehicle.
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  • Brake Controller Installation-2005 Toyota Tacoma
    According to my contact at Tekonsha, the # 3040-P is the correct brake controller wiring harness for a 2005 Toyota Tacoma IF the vehicle is equipped with the factory 7-way trailer connector. The # 3040-P is compatible with all Tekonsha brake controllers that have either the socket in the rear of the controller for the harness or those that have the wires that extend from the rear of the controller that terminate in a connector. If your controller has wires that exit the controller and terminate...
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  • Trailer Brakes Instantly Apply When Trailer is Plugged Into Tow Vehicle
    Are you sure that the horse trailer has a 5-Way connector, and not a 6-Way such as part # 30205? In any event, I do not believe this is a problem with your brake controller. I would bet that the adapter or the trailer is wired incorrectly. When the adapter is plugged in, the pin for the trailer brakes is contacting the pin for the 12 volt accessory lead on the 7-Way connector on your Tacoma. As soon as the trailer is plugged in, the brakes instantly receive 12 Volts, and lock up. There...
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  • Wiring a 2008 Toyota Highlander Hybrid with a 7-Way Trailer Connector and Brake Controller
    If the wiring that was done tied directly into the tail lights of your 2008 Toyota Highlander but did not have a converter, that may be the reason it was throwing codes. In order to install a 7-Way trailer connector on your Highlander, you will first need to install a 4-Way wiring harness, # 118449. I have included links to the installation details and a video showing a typical installation. Next, you will need to install a 4 and 7 Way Installation Kit, # ETBC7. This provides a 7-Way...
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  • How to Install an Electric Trailer Brake Controller on a 2011 Toyota Tacoma with Factory Tow Package
    The installation of the Tekonsha P2 Brake Controller # 90885 and Wiring Harness,# 3040-P, could not be more simple on your 2011 Toyota Tacoma with tow package. The truck will have a wiring harness up under the dash, to the right of the steering column (the plug could also be left of the steering column above the emergency brake pedal). All you have to do is plug in the brake controller wiring harness to it, ground the additional white ground wire to a bare metal surface or existing grounding...
    view full answer...
  • Brake Controller Wiring Adapter for 2012 Toyota Tundra
    The proper brake controller wiring adapter is # 3040-P, which would plug into the connector located to the left and above the emergency brake pedal, as shown in the photo I provided. If your truck doesn't have the 7-way connector, you can install one using part # HM11143395 which plugs into the connector located behind the rear bumper of the truck. If you have the older version Pilot brake controller that simply has the bare wires exiting the rear, you'd cut the black plug off your 3040-P...
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  • Truck Battery Dead Morning After Installing Tekonsha P3 Prodigy Brake Controller
    I spoke with my contact at Tekonsha regarding the Prodigy P3 Brake Controller # 3040-P you installed on your 2008 Toyota Tundra. He states when setting up the controller, the "No Trailer Connection"/No Trailer Symbol screens will be one of the first displays that show up on the screen. He states this will last for about 2 minutes before returning to the "Tekonsha" home screen. If you did not have a trailer connected, this is completely normal. Then, after 30 minutes of the controller...
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  • How to Install a Prodigy Brake Controller on a 2010 Toyota Tacoma with Factory Tow Package
    Since your 2010 Toyota Tacoma has a factory tow package, installation of the Tekonsha Prodigy Proportional Brake Controller P2, # 90885 will be very simple. Your Tacoma has a plug, tucked up under the dash, most likely left of the brake pedal. There are some panels that you will have to remove to gain access to the wiring. Find the plug, it will be the one, probably with a white connector, that is not hooked up to anything. Attach this to the corresponding end of the brake controller harness...
    view full answer...
  • 2014 Toyota Tundra Ground Wire Location for Brake Controller Install
    If you check out the install video I attached you can see that when we installed a brake controller in a 2013 Toyota Tundra like yours we attached the ground to the parking brake bracket. Fast forward to the 1:20 mark of the video to see exactly where.
    view full answer...
  • Brake Controller and Wiring Recommendations for Towing a R-Pod with a 2011 Toyota Highlander
    I would recommend using the Brake Controller 7 and 4 Way Installation Kit, item # ETBC7, along with the Tow Ready Harness, # 118449, that you have installed on your vehicle. This kit has all of the wiring, circuit breakers and connectors that are needed to complete a professional looking installation. We also have detailed instructions that guide you through installing this kit, see link. When performing the installation just make sure that the Red wire, from the Brake Controller you...
    view full answer...
  • Installing Tekonsha P3 Brake Controller # 90195 in 2015 Toyota Tundra Crewmax without Tow Package
    If your truck has a hitch, tow button and a trailer connector I would expect that it DOES have the tow package. In this case you would use part # 3031-P to connect the Prodigy to the truck's under-dash port. Please see the linked video showing the installation process. The exact components that are included in a "tow package" can vary by auto maker, by vehicle model and model year. Sometimes the presence of a 7-way socket on the rear bumper means that a tow package is in place, while...
    view full answer...

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