I performed the pin 7 mod and installed my diff lock switch a few days ago. I did a snow run with the norcal 80 group but probably didn't need it so much. But then, the next day, I am backing up a car trailer with a dead Ford product and it all made sense. I was backing through a mess of dead vehicles and on uneven ground and I put it in 4 low unlocked center and the Cruiser was more manueverable than any vehicle I have ever used to tow. It just adds many more options of what you can do with the 80.