ecu pinout in reference section

i looked up obd-2 pinout for primary o2 sensor and it says c16. I went out to my car and i already ran a wire to the ecu but i dont know how to find "c16"
I looked the wiring diagram in the haynes manual and it says its a white wire but on the wiring plug in there are 2 white wires in different locations.
One wire which i think is the right one gets braided into by a brown/black wire that down the line somewhere i think is braided also to the knock sensor and to the IAT sensor.

Im no genius when it comes to wiring diagrams, I just wanna make sure i dont blow my gauge by hooking up the wrong wire. Knowing how to find "c16" on ecu will help.

4 a p72-a05 obd2-b

Please help thanks!

I figured it out on my own with a multi meter but still didnt understand the pinout thing, just for reference the 02 signal wire is the one that has a browm/black wire spliced into it.

a1 a3 . . . . . . d1 d3
a2 a4 . . . . . . d2 d4

like that...

This of any help? http://www.pgmfi.org/twiki/bin/view/Library/P72