I am installing the Pokeys57cnc board in Mach 3 and I can't find anywhere on YouTube on how to install them on the board. I have a 3 wire NPN switch I am trying to install but can't see on the board how to hook them up. I also have a 3 wire limit switch that I would like to install for my homing switches. Can anyone let me know where on the board to hook these things up? Thanks