Hi all! I am finishing up an engine install of a 5.4L 3V on a 2008 F250. Along with the upstream O2 sensor on the passenger side, there is another wire bundled with the O2 sensor wire. The plug on the end is a white 4 pin connector and I can figure out where it goes!! I labeled almost every thing (called this one 'Dave') but I can't find where it was to plug into. It's a short wire (about 12 inches) but I can't seem to find it's mate!! Any help?

Many thanks!

D

 

Post a picture showing the harness and connector as best you can get and list the colors of all four wires insulation.

 

Thanks Scott. We figured it out by process of elimination and comparing what the drivers side connections looked like.

D