I have an 02 Cadi Deville with stock nav, onstar, bose, RAP, etc......i wanna keep all that and install it cleanly?

what do u mean? Your message is not very clear..What do u want to install?

i would guess an avic series head unit! lol

i dont know if youll be able to find an adapter for that. 1999-2003 cady cars are very iffy. one car may have a typical GM plug but most do not.

the best way to know is to pull out the head unit and see what kind of plugs are on it.

Ya an AVIC, howd you know? (LMAO) I should have been more specific though. Sorry ryan420....i wnat to install a D3.

They do make the dash kit and the adapter for the audio/bose/rap system as well. Check with metra/scosche/best/aamp/perhiferal/soundgate/etc to see just who has the parts you need. Metra should have all, but not 100 % on the wire harness/adapter for the bose/rap, however, aamp/perhiferal/soungate I am almost certain make the adapter for that.