Brake Controller
Thanks
steve
Prodigy makes an adapter that is a direct plug in to the wiring harness under the dash.
15 minute install if you take your time.
http://www.etrailer.com/pc-BC~90185.htm
http://www.etrailer.com/p-3065-p.htm
IMO it's not worth retro-fitting the Ford built-in unit. But it can be done for somewhere between $400-$600. It requires the brake controller, a new brake master cylinder, and a trip to the dealer to have it turned on in the truck PCM. A few guys here have done it, if you search for their threads.
If you do it, and don't already have the upfitters, put those in at the same time. They are easy to do.







