B18B wiring

I hope I'm putting this in right, if not i apologize. I need help, i Have a 93 Integra that is getting a b18b motor install. at a shop, we are having a problem with getting power from the wiring harness to the distributor. We have checked all fuses, all wires are sound, borrowed cpu from another car. Car has an MSD distributor, MSD coil.

Does anyone have any ideas on what could be wrong would be greatly appriciated.