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Help finding location of sensors and cables on '91 300zx engine wiring harness

Can anyone help me find where these go on the 300zx na?

Located on back of plenum and connect together. I will have to order new ones of these:

https://imgur.com/a/BSmjoN5

I can't seem to find which cable attaches to this, located on driver's side underneath plenum in the very middle. I have a cable in the next photo that attaches but do not know where the other end attaches to

https://imgur.com/a/TCEP2J7

Cable that seems to attach to the sensor. Where does the other end go?

https://imgur.com/a/PZUv1BB

Finally, is this apart of the EGR? If so, the EGR was deleted on this car so these don't go anywhere?

https://imgur.com/a/qqWEBQH

Thank you all, for the help.

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