I got a different head unit installed at audio king in burnsville, MN it was a brand new car I had the dealer bring it there to have the new stereo installed before I picked up the car. later I wanted to put back in the factory head unit and found they chopped the connector off the factory harness instead of using an adaptor.

there are no good car stereo install shops even if you may think you have found a good one it will turn out to be bad later.