IM looking at the pin out diagram, the o2 sensor is 2C. which is in the top row, 2nd from the right. Do I just need to pull out the right side of the 3 connectors and splice into the second wire from the right in the top row?

 

can anyone confirm that it is a brown wire with a pink/red stripe?

 

Sorry, it's been a long time since I had mine apart, but if you can get into the harness, check each end with an ohm meter to be sure it's the wire. You got the right pin though.
Just wanted to add that the FSM has the colors in the wiring diagrams in Z.