I have a used Powermaster complete unit I removed from my 1987 WE4 many years ago. This was removed to convert to vacuum brakes. The brake light would come on when pushing the pedal but still stopped the car. May need an accumulator or a rebuild. I'm not sure or guarantee its function. I can say that this unit has only around 15,000 miles of use since new. It was removed in 2018. Very nice condition and would be a nice unit to rebuild for a nice car. Was in a Arizona garage its whole life.
Asking $250 plus shipping OBO
Asking $250 plus shipping OBO