I am doing bank 2 (passenger side) sensor 1 and 2 (before and after the cat) and I am having trouble following the rear O2 sensor wires to the end so that I can disconnect it. I follow it back towards the firewall from above the car as far back as I can get and still cant feel the end/connecter piece. I doesn't look like it is something that you can easily get to ....even from a quick glance from underneath. Does anyone have any tips/tricks for this. 1997 Intrepid 3.3L ????