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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 behind your vehicle's dash.
Features:
This adapter plugs into the connector behind your vehicle's dashboard. To reach the connector, first locate the notch in the access panel in the center of the dash, near the passenger side. Using a trim panel puller, 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.
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.
California residents: click here
Easy to install
Product was shipped very fast and arrived well before expected time. Good Service, good products....great experience.
i had to re-pin the truck side plug, etrailer support was prompt and right on the money. ok product, great vendor support.
Outstanding customer service!!! The quickest online shipment I have ever received without having to pay for express shipping. I would recommend etrailer over any other website. The cables plugged directly into the factory harness as suggested to etrailer.
Ordered a #90195 Tekonsha P-3 Trailer Brake Controller and the 3034-P Tekonsha Plug-In Wiring Adapter for my 2009 Georgetown F550 chassis. Excellent shipping time!!! I was desperate to get it before the weekend and it all arrived a day earlier than anticipated ! Also, eTrailer honored their Price Pledge when I saw the same items for a few $ less on another site.
Great customer service ! thanks !
Perfect fit for our Minnie Winnie (on the 2016 Ford E450 chassis). The cable is a perfect fit, and the installation electrically is a breeze. Where to mechanically mount our controller is another story. Taking out the accessory plate was also a slight challenge, the existing battery boost switch is a bit large. The switch wants to stay in the dash as the switch cutout on the dash is a bit too small, it holds the assembly in place loosely on the dash. It requires a bit of moving the trim plate, and the metal backing plate behind it back and forth, up and down to break the switch mounting tabs free from the dash after removing the two trim screws. Once the trim plate has been removed, the factory controller cable is in plain view and is the 3034-P snaps right on.
Since my controller travels between the Minnie and another vehicle, I didn't want to do a permanent installation, thus there is no clean final installation picture shown. There is room for a controller to the right of the existing switch (if I were to make a rectangular cutout in the trim plate, but I may end up just using a Velcro attachment of the controller bracket to the top of the dash. Under dash mount is not an option as you couldn't see the controller or easily reach its controls.
Perfect fit for my 2018 ford e450 jayco motorhome
Jesse
8/8/2025
Excellent
Etrailers was extemely helpful in helping navigate what trailer brake controller i needed. They pick up the phone when you call and shipped within hours of the order. Got it just a couple of days later. The part was $40 cheaper than on (another site) too.
Gwendolyn Y.
2/26/2025
Hey Drew. Glad that we got to help you fin the right part you were needing! What kind of trailer are you towing?
Wiring harness was great! 0nline vs paper instructions were off as to location where to plug wiring harness into - paper was better.
My factory 2011 F350 integrated brake controller want recognizing any of our trailers, after cleaning and greasing connectors and chasing wires. I just installed the Tekonsha P3 with Ford factory harness. It took all of ten minutes as I already knew where I wanted it placed. I plugged the trailer and was instantly recognized. Super quick and easy. I mounted it on the drop down cup holder; easy to see and use the controller and it doesn’t interfere with the cup holders when in use.
I purchased this harness for a 2012 Forest River Sunseeker Class C RV.
It has a 2011 Ford E450 Van front. I did some research on etrailer about possible locations of the factory brake controller wiring, and found out exactly where it was.
(Behind the coin holder in the dash).
The hardest part of the whole install was freeing the factory harness from the harness tie down behind the coin holder.
Installed a Prodigy P2 brake controller, hooked up the 3034-P harness, and boom!
Everything works great.
PlugNPlay Mini Winnie on an E250 chassis. Easier installation if you ignore all the usual instructions messing with the upper dash panel and just pull back the engine cover. Reach up there, pull the connector down, and you're good to go.
Great brake controller! I installed this unit in my 2016 Ford F250 4x4 in just over 30 minutes. Of course, I spent a little time (about an hour or so) in advance on the etrailer website researching how to install this controller. After watching a few videos and reading a few detailed reviews I was ready to go. I did order a plastic trim removal tool set on [site] prior to this installation. ** NOTE to etrailer: Think about offering a set of trim removal tools for sale to your customers - very important!**. I figured the $25.00 spent on the trim removal tool set would ensure no damage to the interior of my new truck and I was right. This is my second or third brake controller purchased from etrailer. Fast shipping and great products! Thank you!!
Laura E.
3/11/2017
Good news, Joe! We do sell trim removal tools and for less than you paid on the other site! They may be found at the following link:
Helpful Links
Controller and wirering harness arrived in one night. Installed easy and clean in an hour and worked properly ever since. True plug and play with my 2013 E-350 xlt van. Harness plugs into the cable secured on the back of the coin cup.
Easy plug right in harness
Daryl
8/8/2019
Works great!
E trailer is an awesome organization. I couldn’t find this part, gave them a call and they sorted me in about 3 minutes. This product worked right away and has not wavered once.
Awesome products
This is as.good as it gets! I did not have a factory 7 point plug. When this is the case, run two wires and splice them in at the break controller plug.This item made my job much easier! If you have a seven pin factory hitch all you need to do is plug it in.
Good Quality but two wire positions needed to be changed on 2025 E-450
Very happy!
Location of connection for 2013 expedition is behind dash trim beneath radio,
Fit perfect, the instructions from etrailer are spot on. Combined with the Tekonsha p3 brake controller. Really good set up. Can be difficult to find info on 2017 Ford E450 based motorhomes, but as I said, etrailer knew all about it.
Justin J.
9/28/2020
1 yr later and still working fine
This is a replacement for the one I ordered incorrectly. Customer service was great, but I had to pay shipping costs. I recommend you get active help when ordering these items so you get it right the first time. Plug and play worked great when installed.
Helen
2/3/2024
After a year, the brake controller still works fine. No problems so far.
I ordered a adapter for a 2015 Ford Escape along with the receiver hitch. I received the hitch but never got the adapter. I forgot about it. The hutch fit great. The brake control and adapter worked good. Other than the other adapter, everything you guys have sent me are great.
G. C.
11/2/2017
As the review stated, I never received the adapter.
Wiring pigtail harness worked as described. No problems with it, plug and play.
Robert M.
9/13/2019
After a year, it is still working fine. No issues.
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Gp A.
7/2/2018
Great unit, and good marketing technique to follow up a year later!