Forgot to add to my last message that I already have the power wiring scheme figured out. I'm not out in my shop right now, but on the board with more then one 'joint pin', when looking at it's component side, leftmost 2x4 pins = GND, rightmost 2x2 pins 5v, 2x2 pins next to 5v are the 12v pins, and next to that, 2x1 pins -5 volts. On the other board, the only power connection is GND, which is 2x3 pins, pretty obvious which ones. Once I get mine up and running properly I'll be able to share the rest of the pinout aswell.