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Most brake controllers take up room and clash with the dash, but this one tucks completely out of sight under the dash. The main unit measures just 3-3/8" long x 3" wide x 7/8" thick, so nothing sticks out or gets in the way of your knees or airbags. You keep a clean, factory look while still getting full proportional braking control.
No need for extra knobs or displays. This controller connects to your smartphone by Bluetooth so you adjust settings right from the OneControl app—set max brake output, dial in sensitivity, or hit manual override with a big on-screen button. Once paired, it keeps working even if Bluetooth drops, using your last saved settings. The app runs on Apple 5.0 and newer or Android 4.3 and newer, and it can store multiple trailer profiles so you’re always ready to hook up and go.
The built-in 3-axis accelerometer measures how fast you’re slowing down and matches the trailer’s braking power to it. Ease onto the pedal and your trailer eases in; hit the brakes hard and it responds instantly. It works with trailers that have 1 to 4 axles (8 brake assemblies) and supports electric trailer brakes for steady, even braking on any load.
Wiring is simple thanks to the custom harness that plugs into your vehicle’s factory port. The unit mounts anywhere under the dash with adhesive backing or zip ties—no drilling or cutting needed—and automatically calibrates once connected. Built-in reverse polarity and short-circuit protection keep it safe during setup and towing. In just minutes you’re paired, calibrated, and ready to tow confidently.
If you tow more than one trailer, saving profiles in the app is a big time saver. Just pick the trailer name on your smartphone and your preferred output, sensitivity, and hazard settings load automatically. Whether it’s a boat one weekend or a utility trailer the next, your brake setup is always dialed in exactly how you left it.
Alternate Instructions
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Customer Satisfaction Score:
85% were satisfied with this product
15% of customers were not satisfied
Ratings & Reviews
This brake controller has to be unplugged when not in use or it drains the battery in a few days. I had to have a electrical test done in my vehicle ($XXX). The etrailer tech said the test was done incorrectly. The Chevy dealer claims it was accurate. I’m left with a problem.
Needed a brake controller I could rely on because I was pulling my camper to a site at the top of a 25% grade within a few days. Unit plugged right into the harness for the factory brake controller (with the adapter cable) on my 2014 Ford F-150,and worked perfectly. Bluetooth connectivity works through the app (rather than through the phone's "settings" icon),and connects instantly. I'm very pleased with this product.
Great product!!! Installed in a matter of minutes. Determining where to attach the control took longer than the install. Pulled the trailer on a trip on roads with several steep inclines and applied the trailer brakes sparingly on the decent. Was able to adjust with the proper brake applications needed. Worked great. Made me feel confident that I could control the trailer on any road way. I very much recommend this trailer brake control for two axle trailers.
the black side went into curt triflex excellently. the white side was supposed to be wired for my nissan, just clip in & done. but the wires were not the same and in the wrong sockets of the clip. my electrical man is currently working this out. HOPEFULLY.
etrailers out did my expectations. I ordered a trailer brake controller and pigtail one day, and they were at my doorstep the very next day. Boy, talk about fast. My rig works great , easy as pie setup, good price ( and I did look around), no problems at all. You guys are great. I will be buying from etrailer.com again for any of my trailer and accessories. Great job guys and girls.
As first time truck and pop-up trailer users, we initially purchased a cheaper brake controller that required drilling the dash. This is a new truck, so we decided to switch and spend more for the Bluetooth. etrailer was easy to work with for a return, and the Bluetooth brake controller is fantastic - so easy to use with our new trailer!
Truly plug and go, except at the back of the truck when the trailer plug harness plugged in, the brake wire and power wire were crossed. Research explained that Nissan Frontier's are known for the unconventional switch with aftermarket wiring. I simply cut, switched, soldered. All good now.
The trailer light kit I got was very easy to install with the helpful video and instruction etrailer has. etrailer made it very easy to select the correct trailer accessories for my Frontier. They were helpful when I called and the website is very easy to use! I have made other purchases through etrailer because it is easy to use and they have what I needed all in one place. Thanks!
I really wanted a trailer brake controller that I didn’t have to stick an ugly knob/box hanging off my dash. This was my solution and it works perfectly. Plugged right into my Honda Ridgeline existing plug, and easily connected to the app on my phone. Nice setup.
Ordered gooseneck hitch, wiring harness and break controller for my truck. Perfect fit , easy connections best purchase ever made on internet. Very good price and great customer service! ??
Works perfectly
I ordered this wiring harness because it said it would work with my 2004 Nissan
Titan. It does not. The plug on one end of the harness matches none of the plugs on the truck wiring.
I was looking for a trailer brake controller that did not require a permanent mounting to the dash or center console of my 2020 Jeep Grand Cherokee Trailhawk. I initially considered the wireless bluetooth controller from Curt Echo that plugs directly into the 7-pin outlet next to the tow hitch. However, reviews from individuals that tow RV trailers identified that particular option prevents the 12v battery on the trailer from charging off of the TV while connected. This would limit the RV utilization during long trips involving boondocking.
The Curt Echo under-dash controller seems to solve that problem and uses the same user interface as the Curt Echo.
Easy to install and operate; problem solved!
Easiest install ever !
Plug and play. App is easy understand and use.
My favorite is with the app and on selected active profile you can see the amount of brake amount is being applied to the trailer when the vehicle brakes are applied. I also install the manual override button. FYI: you don’t need the app on your phone open for the controller or the manual override button to work. Also another nice feature of the manual override button is the size about the size of a quarter, uses a CR2032 battery and the battery level is displayed in the app.
This was relatively easy to install under the dash of our 2021 Jeep Grand Cherokee, especially since ours has the factory Trailer Tow Package and therefore an existing pigtail connector ready to connect to the brake controller. The Curt wiring adapter made it super easy to connect the Brake Controller to the vehicle's wiring harness. The controller was easy to calibrate and worked seamlessly while we're towing a rented trailer. We used a dedicated (older) cell phone to operate it while we're towing to avoid any potential interference from other apps rather than using our regular phone on which we receive phone calls texts, etc. This was our first time towing a trailer and this easy-to-use Brake Controller helped make us feel safe and comfortable. Highly recommended.
So much easier than cutting wires and crimping butt splices. Plus it make un-installation easier and doesn't void the warranty for the brake controller. the time saved was worth the money for me.
Bri
6/7/2017
One year later and unlike my guitar hero drum kit the insulation on the wires has not cracked and fallen off yet. Plus its nice to be able to unplug the unit from the car.
Do not buy either the Curt Under-Dash or plug-in Wireless brake controllers until Lippert fixes the phone app. I’ve used both happily with the old ECHO Smart Control app. I could use the remote manual button with the phone app not even running. As one would reasonably expect the button talked to the controller directly via Bluetooth. The new OneControl Auto app must be running and in the foreground to use the manual remote! And the most recent version of ECHO Smart Control is non-functional, it just tells you to install OneControl Auto.
The break controller worked seamlessly. Profiles are easy to set up and it has very reliable Bluetooth connectivity with my phone. Installation was really easy on my Honda Pilot!
As always, the etrailer staff came through with the right part for my Nissan.
Easy installation and product works exactly as it should.
I've had the brake controller in use for over a year in my 2012 Nissan Frontier. The install was easy and took about an hour. My truck is a 2WD model so I mounted the controller in the plug that is used to select between 2WD and 4WD on vehicles equipped with 4WD. So the install look like factory.
I installed the Curt C51110 controller with the Plug & Play C51382 into my 2016 Frontier, works perfectly.
Kenny
9/6/2017
ITS BEEN A YEAR SINCE INSTALLATION, ITS BEEN IN THE SAME LOCATION, HAVENT HAD ANY PROBLEMS! GREAT PRODUCT, GREAT PRICE!
It's perfect. Just plug and play as adv ertised.
Hard to tell. For my 2018 Armada the power input and output was not reaching the controller properly. I took it to a shop that installs Curt products. They added a diode to one of the wires. They told me some vehicles need it some don’t. When the controller was in my Ram, it didn’t. After hours of diagnosis, they strongly believe my vehicle has a wiring problem. In the end I ended up getting the Curt Echo which works. A lot cheaper than going to the dealer to figure out wiring issues.
Just installed a Kurt brake controller which I purchased from Etrailer last year. Having a newer vehicle I needed a different harness which made the install easy.
Do you have a question about this Trailer Brake Controller?
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Laura E.
11/8/2017
Thanks for pointing this out, Russell. The factory brake controller plug on some vehicles primarily XE models do not have the 4 pins to match up with the adapter plug. The factory plug will need to be hardwired onto the brake controller adapter that was purchased.