Amazon.com: Tekonsha 90160 Primus IQ Electronic Brake Control, Grey : Automotive

Works well as far as I can tell for trailer braking. My only issue was when trying to mount it. It comes with two mounts. One is a snap-in type of bracket that works fine, but I wanted to use the more traditional bracket that gives you the ability to adjust the angle. That bracket requires holes in the controller itself, which aren't pre tapped. Holding the controller with one hand and trying to hand screw tiny self-tapping screws through plastic with the other hand isn't easy. You obviously don't want to drill a pilot hole into the controller, and I didn't want to put it in a vise to hold it steady. So, needing the controller that day, I ditched the mount I wanted to use and went with the snap mount. I attached a picture of the side of the controller and the divots for the holes that aren't there.

Had one in my 2006 Ram 2500 so got another for my 2003 Ford F350. Works great on both hauling the16 foot car trailer loaded with a car or 5000lbs of hay or hauling a 4 horse trailer. Installed easily in both trucks and the boost allows easy adjustment between empty and loaded trailers.

These brake controllers hit the sweet spot of price and performance. All the more expensive controllers give you are generally pointless options (multiple trailers, 360 mounting, fancy screen, etc). Even people like me with multiple trailers and vehicles will probably NEVER use any of these extra features. In the end, they just waste your money and make the brake controller more complicated to use.This controller functions exactly as one should. With no trailer, you don't even notice it's there. The display isn't intrusive, and completely shuts off aside from a small, dim light to let you know it still works.With a trailer, it just works. The controls are simple, the boost functions are easy to use and understand, and the adjustability is straightforward. Installation is as easy as any other brake controller, and at 70 degrees you'd be hard pressed to find a spot it won't work in. Braking action is smooth and consistent, and the manual override works as it should. The display tells you whether it's connected, and how much power it's feeding to the brakes, and that's about it. Fantastically simple and effective.Long story short, I already installed 3 of them in 3 separate vehicles, and we just purchased an '03 Explorer that will be the fourth. We use this mainly for a 3 horse slant.