[einstrigger]

I just bought that exact same unit from eBay and was planning to do the install this weekend. Anyhow, I've been researching here and found a couple threads in the DIY section of the forum that could probably help:

http://newscionxb.com/do_it_yourself/scion_navigation_system_subwoofer_install_diy_w_nav_fix-t162.0.html

http://newscionxb.com/do_it_yourself/stereo_removal_nav_installation_guide-t85.0.html

I'm not sure about the steering wheel controls yet, but I guess I'll find out this weekend.