Anyone have any experience with doing the engine wire harness replacement? I've been having some throttle body issues and when I was checking the ECU side for voltages I discovered a nightmare wiring job.

I bought a new wire harness set but when I was looking at the existing connectors I didn't see the white connector anywhere
Does anyone know where it goes?

 

The white connector in the 2nd pic with 3 harness heads in focus is the white wire I am referring to. I wonder if there's a module somewhere in the dash I'm not seeing.

This is a g37 by the way