Free Factory Service Manual here:
S30 FSM
The engine bay EFI wire harness is basically a stand alone and only goes from the ECU to the engine with a connection to the battery via the EFI relays. Study the wire diagram in the FSM and understand what and where before you dive into this undertaking. The better you understand how the EFI system work the better off you will be to tackle any and all of the "projects" that you have taken on in purchasing a Z.
One thing to remember is that red is not always a power wire and black in not always a ground wire in the Z world.
Welcome to the world of ZZZZZZZZZ!
S30 FSM
The engine bay EFI wire harness is basically a stand alone and only goes from the ECU to the engine with a connection to the battery via the EFI relays. Study the wire diagram in the FSM and understand what and where before you dive into this undertaking. The better you understand how the EFI system work the better off you will be to tackle any and all of the "projects" that you have taken on in purchasing a Z.
One thing to remember is that red is not always a power wire and black in not always a ground wire in the Z world.
Welcome to the world of ZZZZZZZZZ!
