There is a HUGE Recall on F 150's, Has been for a While. There is a Brake switch on the Master Cylinder That is for the Cruise Control, IIRC.
Anyhow, Switch Leaks, Contacts IN Switch Boil at 12v all night long and ignite. MANY Trucks have burnt up because of this. The Recall is to ad a Fused Jumper cable inline with the offending switch. If the Fuse Pops, You have to take it Back to Ford to get a new switch too.
I've had the recall done on My Lightning. I think it covers about 10 years of F 150's starting around 1993-ish.
Sorry About Your car - You can Probably get even MORE SHO for the check You'll get.