Thanks Perry! I completely forgot about those points.
Originally posted by perry:
Having an wiring harness would really make your life easier. It connects between the factory harness and the harness for the headunit, so you don't have to cut and splice the factory wires. At least get one of those, Best Buy or Wal-Mart should carry them.
This should be an absolute priority. It makes an installation go from a arduous task to a simple plug and play. Completely forgot to mention that in my original post.
The tools to pull the OEM HU are cheap and make life a whole lot easier as Perry said.