If you have the factory installed tow package there should be a pigtail>>in the glove box. The pigtail plugs into the electrical panel below>>the dash on the left side. If you didn't get the factory package you>>should buy an aftermarket pigtail.>>

Now if you want a real brake controller that works like the Ford unit,>>look here:>> http://www.brakesma­rt.net/>>

All other controllers work by just guessing what your foot is doing.>>Yes, I know they cost a lot, but there is no other way to get real>>control except buying a Ford. Many will tell you about their favorite>>controlle­r, but they don't have a clue how they work.>

The 2002 and later models didn't come with the pigtail, even if they> > were equipped for it. It's an item to be purchased from the dealer.> > If the OP doesn't already have a controller, Tekonsha's Prodigy is one> > of the leading models, and they offer a plug-and-play install with a> > harness purchased from them. Has the GM plug on one end and the> > Prodigy plug on the other. My father's used one for several years> > now, and is planning on upgrading to the new model.> >

www.tekonsha.com is the site.>