missing O2 orange wire

I can´t find no orange wire hooked to turbo inlet, I think previous ownder cut it out. I want to put there new wire. Can somebody advice me where I have to connect this wire? Where and which pin. (Still running rich in high revs at boost)
Thanks

The PO likely cut it off at the harness. IIRC, it goes into the harness about 6-8" up and to the rear of the turbo. I would go out and look, but mine is at home with a suspected...wait for it...wait for it...BROKEN CLUTCH FORK!

if i recall, pin 49 is the o2 ground...

Here's the pinouts for the 1987-1988 TC on my website:
http://www.tbirdheritage.com/turbocoupe/...inouts.php

Pin 49 is the orange, oxygen sensor ground wire.

Thank you. I hope I find this wire. If not, I put there new.

So, I have now connected orange wire, car is running like never before. But now I hear rear axle noise...

THANKS