Well you have a few options
-you can do what I did before I went completely aftermarket and run a inline converter (I think that's what it's called) through the rear 6x9 green/blk wire I believe is where I tapped into it. Allowing you to run the RCA for the amp. The remote wire I ran to the passenger fuse box.. Just pick a constant 12v. Obviously run the amp kit like you normally would.
Or
-Go aftermarket. Your going to need obviously the headunit as well as the GM04 module and if you plan on maintaining the steering wheel controls.. That's another module your going to need.
Choice is yours.
