Ok looked at good thread for "Tech guide: O2 sensor replacement " but it seems not the same as the TJ any one able to give me quick guide to replace the O2 sensor for the TJ (Mine fact lpg)

http://www.aussiemagna.com/forums/showthread.php?t=13702&highlight=fitting+oxygen+sensor

Could you link that thread?

Solved Preacher man's guide is spot on "9. Look for a white connector with 4 wires (Black, grey, white & white)" it is there and in my case there is a plate above the hole and it was hard to see the wires but it was there tucked in between