HFS3 wiring ecu area

[TTU666]

Evening All

i am struggling a little here.

i have installed the kit on my rs4 b5 2000 model, me7 ecu.

i have done all the wiring and the kit is working fine, i am now on to the next stage of mapping it in. and my goal is to get a signal to my laptop for logging. i have been told to use the orange wire to the rear o2 lambda input for the signal. I have done this and it has not worked am i doing this correctly?

Also on the same harness i have no connect for the yellow wire or black wire, do they need connecting to for the Orange wire to work?


thanks