Hi,

I have a used stoplight brake switch for the following cars with power brakes.  It as tested good with an ohmmeter.   I have the manual brake version in another listing.  See last picture from my Ford manual showing applications. 

71-78 Mustang with power brakes

72 -79 Torino with power brakes

75-80 Pinto with power brakes

72-79 Thunderbird