Help with the VRIS Ben ...
The above pic shows how to convert DE to ZE, in which case, A = no longer needed, B = as A is not needed, connect other vris straight to here, C = this metal pipe becomes redundant, can stay unconnected, D= can remember why i put that in
.. Anyways .. anything RED is not needed for a ZE vac set-up .. and all the RED sections are to do with the EGR.
In the first picture you will see that i have probably answered your Q on the vac source behind the throttle body...
As for the wiring loom, remember you do not have the egr solenoids to connect to, thats 2 redundant plugs straight away.
Paul.