I just replaced the wiring harness and i have 1 plug left i cant find where it goes. Its in the center in teh back and is identical to both boost control plugs.

 

Boost control plugs? Do you mean the wastegate solenoid connectors?

To be completely honest, I think you might be referring to a connector that is not used on the Z32 (the same harness is used on several cars that had the VG30DE, including cars like the Infinity J30). As such, leave it disconnected. If the car doesn't run right, then perhaps I'm thinking of a different connector... but I'm pretty sure the one you're referencing doesn't go anywhere on the Z32.

 

Yeah i meant wastegate solenoid connectors iv seen them called several things but yeah its one identical to those and i think its with the iaa valve connectors thats baby blue and yellow.