Yeah that's gonna be my mission tomorrow, to do a full run down on the pins with a multimeter and clarify everything I need. I have that schematic too and have found it somewhat handy and confusing at the same time. From my understanding pins 50&60 are the power grounds while pins 10,20,30,107,108 and 116 are sensor grounds I'll attach the pinout for you to confirm.
Really appreciate your help and thanks for your time.