Why not just install a Brakesmart brake controller, and then you don't have to worry about whether the Ford controller is going to work?? In my opinion, the Brakesmart is a better controller than the Ford controller anyway. I have done what I just suggested in two Fords, in a 2005, and in a 2006, and the Brakesmart works great. FWIW, in my trucks, the Instrument Cluster Module had to be reprogrammed, by a Ford dealer, to a condition of "no trailer brake present", so an aftermarket controller could then be installed.
While there are several features of the Brakesmart controller that I really like, its basic design uses the truck's hydraulic braking pressure to signal the amount of trailer braking needed.
If you do a search on Brakesmart, you can find a lot of info. The below site is one that does have considerable detail on the Brakesmart controller.
http://www.thoroughbreddiesel.com/dr...brakesmart.htm
Good luck on getting your problem fixed!