TB/Turbo cooling/heating

I am trying to prepare for a drift event tomorrow (last minute struggles are real).

I took off a bunch of vacuum and coolant lines about six months ago - thinking I would re-plumb everything. Since I eliminated most of the emissions (track only cat at this point) I cannot figure how to hook it back up.

I checked the factory service manual and it says the turbo gets its cooling water from the air regulator?! This makes no sense and I have no idea where it's plumbed add I even removed the hard line it uses. Can anyone tell me from where the turbo gets its coolant? The turbo coolant outlet is plugged into the TB.

Thank you so much! ! !