Ed and Debbie,
I put my own BrakeSmart in the truck in about thirty minutes including the master cylinder tap, mounting of the controller, routing of cables and zip tying them up and out of the way. It is SO easy to do and it was SO much nicer than my last system. You won't believe the difference.
As Tin Hut notes the system automatically alerts you (in plain old english) if your trailer's brakes have disconnected themselves. This recently happened after a particularly rough section of the Al-Can that had thirty feet of electrical brake lines dragging behind the A/S...we stopped up the road and fixed it before going down the next section of mountain passess. I don't want to think about having to pull off an abrupt stop for something in the road, not knowing that you now have no trailer brakes...that would...suck!