I’ve seen pic’s that show a red and a black wire going to the switch. My revision of driver unfortunately has two blacks, one marked K1 and K2. Is it important that these be a + and a - or are they interchangeable? I can upload a pic if it’s really needed, but I’ll see if any driver experts can steer me in the right direction without a picture. I am attempting to install the RMM BLF driver.
It should not matter how you connect the wires.
Yeah momentary switch, a short isn’t polarity sensitive 
Thanks guys!