To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Most brake controllers take up legroom and clutter the dash. This one is only 1" thick and mounts flush with the included bracket, so it sits low-profile and out of the way. The compact box can go anywhere you like, at any angle, without affecting how it works. You still get quick access to the large pinch-trigger manual override and rocker switches without bumping your knees or blocking other controls.
Hauling different trailer weights means you need control over braking force. The Discovery NEXT lets you dial in both power and response speed. Gain adjusts from 0.5 to 9.9 in 0.5-point steps, while load adjusts from 1 to 9 for how quickly your trailer reaches full braking power. Heavier trailers stop smoothly without locking up, and lighter ones won’t jerk you around. Once set, the system applies consistent, predictable braking every time.
Glare or dim displays can make it hard to check your settings on the road. The large LED screen on this controller is bright, adjustable, and easy to read at a glance. It shows gain and load levels using numbers and letters and provides clear error messages for quick troubleshooting. Night mode keeps light levels comfortable for dark drives so you can stay focused on towing safely.
Installing a brake controller doesn’t have to mean cutting wires. The included custom-fit harness plugs right into your vehicle’s factory brake control port under the dash, then into the Discovery NEXT. No splicing or permanent wiring—just plug in and go. Because it’s not hardwired, you can easily remove or move it later without leaving holes or damage behind.
Time-delayed control means smooth, steady braking that matches your preset levels every time you hit the pedal. It works with up to 4 axles (8 brake assemblies) and supports electric or electric-over-hydraulic trailer brakes. Compatible with low-volt, PWM, ABS, and cruise control systems, it gives you dependable performance across different setups while keeping operation simple and predictable.
Alternate Instructions
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everyone, Aidan here with etrailer. Today, we're gonna be taking a look at the Curt Discovery NEXT Brake Controller. This is gonna be a time-delayed brake controller. Let's check it out. When it comes to brake controllers, there's gonna be two options you're probably looking at, time-delayed and proportional. Proportional is gonna be the nicer of the two where if you lightly press your brakes, the brakes in your trailer are also going to be lightly applied.
If you slam on the brakes, the brakes in your trailer are also going to match that proportionally. With a time-delayed brake controller, it's gonna be applied at the same rate every time, so you don't get that fine adjustment. You can still adjust the settings, but it's gonna be the same every time. So if we're rolling up to a stop sign, coming to a very slow and predictable stop, and our gain and sensitivity are set kinda high, it's gonna be applying the brakes pretty hard. Same for if we have those set kind of low and we slam on our brakes on the highway, because someone in front of us stopped, the brakes aren't gonna be applied in a similar fashion.
There is the manual override you can always pinch to apply, but that's just something to know with a time-delayed system like this. Let's talk about those controls. The manual override is a pinch style where I'm pressing the button with my thumb. It's pretty easy to reach from the driver's seat where I've got it all set up. So whenever I'm driving, I feel like if I needed to suddenly reach down and get it, I can find that pretty easily every time, and index my thumb well enough to get a good press.
So good to know for emergency situations where you might need that. Now, there's gonna be two sets of controls here for the gain and the load. The orange buttons are going to adjust our gain or our brake power. You can go anywhere from 0.5 up to 9.9, and this is going to signify the different power levels. So 0.5 is the weakest, and as I go up, it's going to get more and more powerful.
So if I have a heavier trailer that needs more stopping power, I'd set it higher. The next one is going to be our load. This is basically how quickly the brakes are applied, so that can go from 1 to 9. At 1, it's going to be the lowest, and at 9, it's going to be the fastest or the quickest application. So basically, ramping from zero to fully applied where we have that gain set. So for demonstration, I'm just going to put the gain all the way up to max, and I'm gonna hit the brakes. And you'll see, slowly, it'll climb up to where we set it. And if I turn that load down all the way to 1, it's going to climb much slower to that designated power level. So you can fine tune this to your own trailer application, and depending on how heavy of a trailer you have and how good the brakes are, that will determine what you want those set at. But generally, that gain is going to be for the weight of the the trailer, and you can kinda determine the load from there. Now, to give a visual indicator of that gain, we've got our vehicle hooked up to a trailer simulator box. I've got the gain set to the absolute lowest it goes, so that's gonna be the lowest brake power, and you can see where the voltage is reading right now. If I turn the gain up to 5, that's gonna be right in the middle, you'll see that voltage will climb up higher. And then if I turn it up to the max, 9.9, you'll see that climb up even higher. So this is just to give you some visual indication of that different power level of the braking. This is designed to work with trailers up to four axles and will work with PWM, ABS, cruise controller, and electric-over-hydraulic brakes. So keep that in mind as you're picking this out if it's gonna work with your trailer. Up to four axles, I'd say for the most part, you're gonna be totally fine. If you don't need one that can go up to four axles and you like this style, Curt does make a similar version that's up to three axles. So that's something to keep in mind too if you don't need this much. Now, the big advantage to something like this, and something you probably noticed if you're familiar with brake controllers already, is going to be the size. It's a lot smaller and a lot more shallow than the brake controller we pulled out of this 4Runner today. And that's great, because even though it's mounted externally, it's not going to be in the way of your knees as you're getting in and out of the vehicle. And as I'm in a normal driving position, I've got plenty of distance between it and my leg. I don't feel like I'm gonna be hitting it all the time, 'cause it doesn't stick out very far. That's thanks to the very low profile bracket. We've got it mounted up with the included double-sided adhesive, but you can also use the included self-tapping screws. Just know that they're pretty long, and you're gonna have to have clearance behind there. But this will just click into place over that bracket. (bracket clicking) You can hear that snap in, and that's what holds it in. One thing to note is that because it's not inertia based, you can mount this really wherever it fits best, so it doesn't necessarily need to be level or facing any certain direction. Now, the installation can vary depending on your vehicle. I'd say check for what your vehicle has in terms of pigtail adapters. That's what we we're able to do with this option from Curt. We offer this pigtail adapter on our site here at etrailer, and that allows us to just plug directly into the vehicle's prep package for this. So just check to see if your vehicle can do that, because that's definitely going to be the easiest option as far as installation goes, 'cause it just plugs right in and all you have to worry about is mounting up that bracket, and then tucking up that wire loom from the adapter. Something else to note is that that LED readout does have a number of different functions. You can adjust the brightness, there's a day and night mode, but it's also gonna give us readouts for different errors. So if something's maybe not fully connected or something, it will tell us here. Your instructions give you a full list of all the different errors that can occur and short descriptions of what they are. But because its screen gives full text readouts, it's pretty easy to tell what's going on based on what it's showing. Like for example, when we first hooked this up to our simulator box, we didn't have the 7-way plugged in all the way, and it told us it wasn't connected. So we went back there, pushed the plug in the rest of the way, and then it worked properly. So that's going to help with just troubleshooting anything that may be occurring in your setup. For me, I think this is a nice middle ground between having the controls, easy to access, and having that LED readout, so you can see those errors and the power, and just have a little bit more control over it while still staying out of the way and being flushed to the dash. But that was just our look at the Curt Discovery NEXT Brake Controller. Thanks for watching.
Ratings & Reviews
service was excellent,everything went so smoothly
.parts ordered fit perfect.I will recommend and use your company
again. Thank you George
The break controller was just what we need it.
Worked great! 2012 Ram 1500.
Its a plug…. Not much else to say! Fit my 2010 ram 2500 and Curt TriFlex controller perfectly.
Worked like expected. Got to me in good time. Very satisfied! Would order from etrailer again.
Fit as expected and made installation quick and clean.
Plug worked great, delivery very quick, priced right. Couldn't ask for more. Took literally five minutes to install the controller with this cable. Nice!
As described. Plugs for correctly.
BRAKE CONTROLER & HARNESS WORK GREAT & ARRIVED ON TIME THANKS FOR THE GREAT SERVICE
Received order in good time, and have installed in truck. All went well and works as described. Very happy with the price and the service. Will buy again from E-trailer again.
Great product! Simple installation! The staff was very helpful and order was filled and shipped promptly. Will order from etrailer.com again!
This makes for a very installation. Instructions were very good. Brake controller installed and ready to use in 10 mins.
This product is high quality and easy to use and install. Especially for the price. The shipping was extremely fast and the ability to track packet was even better. I would highly recommend using this company and buying this product.
Piece of cake installation. Installed in 10 minutes. Your company should install a shroud over the wires coming from the brake controller to the adapter to hide the single wires.
Great product, only thing I wasn't sure about was if the gain flashed while a trailer was not hooked up. I emailed etrailer and in a timely manner for a response.
I have 2015 ram 1500. Installation was simple. Might have taken 20 minutes. Setup and adjustment was simple just be sure and read directions. Much smoother braking than old controller.
Cable was perfect, dealer wanted 5 times the price, has worked flawlessly since I purchased it. etrailer.com was great with information I needed, and shipped item immediately, great job George, thanks again, will definitely only buy from etrailer.com in future.
Thanks Susan for helping me out. You found the correct part and install was a breeze. It took about ten minutes to hook up controller and connect harness. Thanks for working with me on the return issue. Looking forward to trying with my toy hauler.
I purchased this product with a Curt time delay brake controller. My 2010 Dodge Ram has the 7 way plug and towing package on it already which made the installation of the product super easy. I looked under the dash by the parking brake and there was the plug. I plugged it in and plugged in the controller, mounted it and I was done! Installation took me less than 12 minutes and that included me checking the plug with a multi meter to ensure the power was getting thru. The best part is I can remove the controller when I am not towing my RV so that I keep my stock appearance. If you can use this part on your truck pay the little extra and get it. The shipping was super fast and easy! One of the best experiences buying online!
You wouldn't think an adapter cable to mate a CURT brake controller to a 2010 RAM, factory installed trailer brake cable would be difficult. But another online retailer and 2 (TWO!) local RV dealers sold me the wrong one..each the same; but wrong!
Only etrailer got it right and at a fraction of the cost of the "others"! Works fine.
Ordered a Curt brake controller for my Toyota Tundra with the matching dual plug in. It installed easily, and worked perfectly. I later sold the Toyota and bought a 2010 Ram pickup. I transferred the Curt brake controller to my Ram pickup by ordering the matching dual plug in cord. It also installed easily, and works perfectly. Very pleased with everything. Excellent and prompt service, and helpful videos to help make installation effortless.
I only towed with it once and then I sold the truck I installed it in. I pulled the two axle camper bought 350 miles and it worked fine.
Connected to the OEM plug perfectly, works great on our Sunset 16 ft trailer.
Purchased this controller for a 2004 Toyota Tundra Limited and it has preformed perfectly! I haven't had any complaints. It reacts and adjusts quickly. Along with the plug and play function there's not much more I can say. Great product!
Works well on a older truck , the new proportional controllers didn’t seem to be very effective on a older brake system.
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