I'm putting a dinosaur back into working condition and my maintenance/operators manuals have limited wiring diagrams in them so I'm wondering if anyone knows (before I spend hours tracing wires)...

There are a row of magnetic contacters (I think that's what they are) under the mainboard and fuses and above the VCU's...They are not kicking on(if I manually push in the contact everything fires up) and I'm not finding what it is in the machine that actually turns them on. Anyone know???

The VCU's is about the only thing that turns on, NC cabinet is completely powerless.