Just picked the car up yesterday. The dealer installed (1) 5G7Z 18812 AA, (1) 4G7Z 18812 BB, and (2) 4G7Z 16163 AA. Part of the issue was the windshield had been replaced. The original had the antennae connection in the lower corner and the replacement had the antennae connection top center. The relocation kit had never been installed. Radio works great now! The amplifier really makes a difference. Thanks for all your info.