Normal
The first thing I look for on intermittent problems with anything electrical is wiring issues, loose grounds, does it look like any body work ever done, if so I look closely in the repair area. After that I would look closely at the brake switch. By the way.....how hot is hot and how cold is cold? Also does it not work at all or does it work improperly?....I will see if I can find anything with the resources I have at work (IATN and identifix) by the way, tell your buddy's at the ford forum that the tenth digit of you vin is a 4.
