Audio Systems: 2005 Camry OEM Radio Diagram, oem radio, radio pioneer

Question
Hi Tom,
I recently bought an 05 Camry (std trim) and want to replace the stock radio. I would like to use the car's existing steering wheel mounted audio controls with the aftermarket radio (Pioneer, Alpine, or Sony). I have identified several companies that make OEM to Aftermarket adapter but because the car is new no one yet has tested  the older adapters to see if they work with the 05. They told me that if I get the OEM radio diagrams they can tell me if it will work. Where can I get the OEM 2005 Camry radio schematics? Any other ideas on how to connect to OEM steeering wheel controls without using the sketchy quality universal remote control adapters?
Thanks so much.

Answer
Steve,
Contact your Toyota dealer to ask if they can order the radio service manual. You may not be able to acquire the service manual for two reasons, 1-the stereo is so new that the service manuals are not available to the general public as of yet. 2-The maker of the stereo has propriety rights to the service info. You may want to remove the stereo and look at the label/sticker to see who actually built this stereo and contact them for the service manual.

TOM,
T&D ELECTRONICS
tdeser@zoominternet.net