I tried replacing this O2 sensor today, but couldn’t obtain enough slack in the harness in order to get my hand in in order to disconnect the sensor from the harness. I followed the instructions in the service manual except for the removal of one clip that’s near the top of the manual transmission...couldnt get a tool in there to push out or pull that Christmas tree style pin. I assume I need to pull this out in order to obtain the needed slack. I went ahead and ordered a bent retainer clip removal tool to see if that will help, in a addition to an O2 wrench vs the O2 socket I had. Curious if there is anything else that would simplify things? Wish Ford wouldn’t have made a simple task so hard.