mez

I am replacing the whole exhaust on my mom's car .I have got all the new exhaust parts including O2 sensor. I followed the O2 wiring back by the transmission and then up into the transmission tunnel with a grommet sealing the access point. Question, where does it go from there? I know there has to be a control module that it plugs into. where is it and how do I get to it. I have the upper console apart to replace some window switches.

I did a search on O2 sensor replacement in the forum but had no luck. thanks for your help.....