I wanted to wait until I had a change to use this controller towing a heavy load before writing a review. I had that chance this past weekend.I have a 2014 Jeep Grand Cherokee with the Eco Diesel and I used it to tow a load of 7000lbs for about a 6 hour ride. The trailer brakes, and controller, worked flawlessly. The controller was easy to set and it worked very proportionally. The brake application was very linear.That doesn't mean everything is perfect. From an operational standpoint I am very happy. The installation itself wasn't bad either. My only issue is with the remote display and remote manual brake control unit. Both are larger than I would have liked and that is especially the case with the manual brake control. In trying to find a spot for the both of them their size caused some issues. It's not that they are so large they won't fit places, it's that they are large enough that it is difficult to make them inconspicuous when installed and not in use.With the display once the rubber bezel and pivoting mount is removed it is much better. It would have been nice though it had much less depth. To the point of being able to have the back of the unit stuck to a flat surface facing the driver. It is deep enough that about the only real choice is to mount it on the top of the dash somewhere. I wound up placing it on the dash top just in front of the A pillar. When not in use it is a little more noticeable than I'd like but not terrible. Also, without the ball mount, being just Velcroed to the dash top, it is not perfectly angled to the driver. Using the ball mount you can angle it any way you'd like but for me the ball mount was far too bulky. In the end it works.For the manual brake control it is far more bulky and thus harder to find an inconspicuous place for it. Ultimately I mounted it to the knee bolster very as low and to the outside of the drivers compartment as possible. It is quite large. I'd have preferred it to be at least 1/2 its size.The whole idea of having the three parts of this setup separate instead of a single unit is to allow flexible and &#34;custom&#34; installation. When you take their bulkiness and then add in somewhat substantial cables, it makes a true lay custom or integrated look very difficult.Even with these difficulties I am giving this item 5 stars, just barely though. The reason is, it is still better than a standard brake controller for reduced bulk and it works very well. Just be prepared to take some time to get it installed in a manner you would like and keep in mind it will be very hard to get a truely integrated look.