Radio wiring diagram needed?

Here are the OE diagrams for the radios, on star, amp, and controls. The other images are the connectors and pin outs for them. These should cover the vehicles' sound system and nav system connections. If you have other questions about the system just ask.

You must like challenges. One thing you are going to encounter is that the system uses serial data from the vehicle to stay unlocked and operational. Without that signal it will likely lock up and stop working because of the radio's internal anti-theft system. That is why they pop up for sale now and then but never seem to sell, they are VIN locked. I would test the entire unit on the bench before you install it. Good luck. As for the other schematic, we likely do but you would need to ask it as a new question as we try to keep topics separate.