I recently got my hands on an SC 1575A1. I don't have the terminal box, but do have the harness. I'm trying to figure out a way to use it as a standard phone and make the line keys light the lamps independently. I keep confusing my self. I have a seperatepower supply.
Better question is, should i. Or should I keep it original just clean it? Im not sure how hard these are to find. Any opinions / answers?
I leave stuff original, but I am lazy.
JMO,
Jim S.