I got the harness with the 6 pinouts so I can integrate the IAT sensor from the '03 MAF instead of having my old one just hanging somewhere. It took a little while, and some trial and error (the Ford manual has the wiring reversed). The first time I just tied the wires together and it ran fine at idle, but pressing the accelerator made it sputter and I could smell gas. I thought it was a bad connection, so I checked them and started it again with the same problems. Looking at the directions, then at my old MAF harness which I cut off, I noticed wires 2-5 were reversed. I fixed those connections and heat shrunk the wires and all is good. You'll notice in the picture all of the wires are white (unlabeled). I was also able to cut off the little tab from the MAF end of the filter and rotate the MAF assembly so it sits on top and not down on the side.