I am thinking about retrofitting the rSAP bluetooth module in my A8 on Friday or Saturday which I believe requires pulling the seat and carpet. Anyone done this before? Anyone know of any special tools required. I know the OnStar and Bluetooth harnesses have different pinouts.

Figured it out. You need a 12 point 10mm inverted (male) socket. Autozone has them.

Incidentally the unit is on the left just ahead of the seat. So if a Brit tells you its on the passenger side - well its on the left.