UrQ 20v Conversion: Help wanted!

[Bob]

well Im on the home stretch of 3b conversion in my UrQ. Mechanically its
all done but now comes the wiring portion. Heres where I am:

3B installed in the bay, and all (I think) wiring from the 3B harness
connected to all the right places on the motor.  The harness is through
the firewall and lying on the passengers floor right now with only ECU
and altitude sensor attached.

The WX harness is out of the car, with the exception of the 3 wires
running to the dash. They are Black, brown/green and Green/violet (if
memory serves me right). (+12v, Fuel pump relay signal and ??)

Somehow these three have to attach to the new 3B harness, but Im having
brain fade as to where (I went through this months ago, figured it out,
then lost my notebook)

 From what I can tell I have 4 ground points on the new harness, need a
+12v for fault code retention, and another 12V supply for the injectors
(that isnt part of the ECU).
What else am I missing? My biggest mystery is where Im going to put
those three wires from the WX harness.  Thanks for any help!

I already searched audifans website for previous discussions but nothing
specific to this. Also many thanks to Scott M for his great web site and
awesome phone support! Thanks Scott!

TIA
Bob