[cbreez]

The problem is that the car uses an antique brake light switch (like mine) that gets cooked by the exhaust heat and goes bad, like the clutch fluid/slave cylinder continually does...
Replacements ( I can't remember the part #) are readily available at Advance, either two prong or three, and you'll get about 1.5 years out of one, depending on how much you drive.
They are cheap, about $10. Check it with and ohm meter and compressed air to be sure.