Motec M150 12v sensors wiring

I have an M150 and need to wire the intake, exhaust cam sensors, crank and cam control which are 12v sensors. Do i wire these into the PDM and ground to 0V on M150? If so, does it matter which 0V i use? Second question is if we are using the 0VA for say the intake and exhaust cam, if there are other 5V sensors grounds splice together, would it damage the sensors since some are 5v sensors and we tie in 12v sensors?

From my understanding and experience the 12V sensors are sent to chassis (battery) ground.

5V sensors that are supplied by the ECU 5V line need to be sent to ECU ground channels.

I'm happy to be told I'm wrong - always eager to learn.