the steering wheel connect i found this guy who said something similar to what you said about the steering wheel connect
do you know how you can tell which one to buy?
"""Steering wheel controls: Connects2 CTSAD002 or CTSAD003 (depending on what kind of connection you have from your original HU. I had 3 separate connectors (ISO variant) therefore I ordered the CTSAD003. YOu have to order it through incarexpress.com.uk (google it). They will ship to U.S. Takes 10 days. around $70 for the unit including the correct lead for Pioneer.
Radio harness adapter: Metra 70-1784 or 70-1787, again