Quoted from Jappie:
On a later 80B's like NM, I usually only make sure that there's 2 wires for the 5v and 2 wires for ground in the double edged connector between mpu and driver board.
A more elaborate approach is needed for system 80, 80A and early 80B. Night Moves however is a late (actually the last) system 80B.
Okay, even those I'm not very familar with. How do I find out which is which and does that mean I have to add wires to the connector??