Stereo Install Questions

[BuzzH3]

Ok, I have been searching for the last 3 days and while I know these questions have come up a number of times, I don't think I have found a definitive answer to them. I have just purchased a Pioneer AVIC-Z1 with the rear view camera, iPod controller, & XM NavTraffic. I currently have the 6-disc in-dash Monsoon unit w/factory XM. I have already purchased the Peripheral GMAH24B and GMAHCM interfaces and I believe I understand how they hook up. My questions are about some of the other wires and parts.

1. Where is the best place (inside the vehicle if possible) to tap into the VSS (Speed sensor wire)?

2. Where is the best place to tap into the reverse wire?

3. Where is the best place to tap into the parking brake wire?

4. Where is the factory XM module located?

5. Can I reuse the factory XM antenna?

6. Can I tap into the factory XM wire harness for power, RAP, & ground for the new XM NavTraffic unit?

7. Can the GPS antenna be mounted under one of the roof rails or would that block the signal too much?

8. Where is the best place to mount the rear view camera?

9. Where is the best place to run the camera wiring into the vehicle?

10. Is there a RAP lead near the back of the vehicle to tap into for the camera?

Sorry for the lengthy post, but answers to these questions would be very much appreciated.