well I am starting a new thread, because I don't think anyone has the same problem I am having. I own a 1975 280z coupe, and the fuel pump will not turn on, I measured the voltage at the fuel pump while cranking, and the voltage was reading 0.03 volts. I'm not that good in electrical problems but i know that this is not correct, I think the pump should read 12 volts while cranking if I am correct. I was wondering if anyone has any solutions for this problem? I am really at a loss right now.

Here is a diagram of the EFI electrical for a 1975 280Z.

Looks like the EFI pump and the Air Regulator both get power via that large MAIN RELAY.

Check to see or hear if it operates when the key is turned ON.

The other wiring diagrams I have are just hopeless to read:sick:

You might want to check for a blown fuse or fuseable link that feeds the EFI system.