I just completed this mod and I'm happy with the way it works in my 22 Sport. I got an 82191-30020 online for $62.50 including shipping from th-motors-jp. It took 5 days to get to me. The one thing I did that varied from the instructions was that I clipped the ears off the sensor so it will be easy to replace. It fit in pretty snug and hasn't moved. I found the instructions in post #55 helpful though my system didn't seem to work exactly the same as described I did manage to set things up with acceptable levels of brightness for both day and night. I did leave the day mode function on because I like the way it works.