Factory brake controllers are very common now. My 2011 F-150 had one from the factory. My 2012 F-450 had a factory brake controller and now my 2017 F-250 has the factory brake controller. It is by your right knee when sitting in the drivers seat.
Here is what your brake controller looks like in your Ford - this is a picture from my 2017 Ford F-250.
All the Ford trucks I have had (3) the brake controller was identical from 2011 to 2017.
Agree with checking voltage as there was a fuse missing from the fuse box that was in the glove box when I bought a new truck. It was not installed at the dealer. Lucky I looked in the glove box before I bought the truck and saw the fuse. The toughest thing was figuring out where to plug in the fuse.
It is at the bottom of this picture.