There are quite a few AVIC-D3 specific threads, but you have to search the archives. In addition to the thread that TheKomoman suggested, you can also check out
http://forums.corvetteforum.com/show....php?t=1680943 and
http://forums.corvetteforum.com/show....php?t=1701697.
I am very happy with my AVIC-D3 in my C6, but I started with the base non-bose set up so all the amplifier and speaker wiring is different than the Bose set ups.
I would suggest using the orange LED behind the passenger's visor for the illumination signal and make sure you hook up the power antenna lead as we have an amplified antenna -- I assumed since we did not have a power retractable antenna that I didn't need to hook that up and had to pull everything apart one more time to fix it.