which pin on the s4 connector (and s5 for future reference to anyone) where the 02 sensor input is for the ECU harness? I know this is a picture for installing a SAFCII but it gets my point across.

 

did you look in the FSM? why not?

 

bingo! I was trying to find that image but couldn't find it. I knew it was around here.

I only have the haynes manual and it doesn't have detailed ecu pinout just misc wiring diagrams

my computer got all messed up recently and I lost a bunch of data (that picture included) because I had to reformat

 

ROTORWIKI has links to all the manuals/FSM's.....almost all. FUEL AND EMISSIONS section of the FSM shows the purpose of each wire on the ECU.