I know it has been a long time since my original post, but my work takes me away for months at a time. I am now back to making this installation.
I found an adapter from kit from Metra that is making the job easier. Its the Metra 70-9003
The adapter is normally for a VW/AUDI/BMW and isn't listed for the Cayenne at all. Lucky for me, my local shop guys were willing to just dig around and found a match.
http://www.amazon.co...p/dp/B0002BEVAC
I now have in my possession, a nice used Z3 that plugs into my 2009 Cayenne. I have a non-Bose version Cayenne.
I purchased the HUR 955 MOST HUR 955 Kit from NAV-TV and it is on hand.
The Metra kit handles the four speakers, ground and battery. Nothing else is available on the standard Porsche connector.
I was able to run the Z3 by manually supplying power to the ACC (red) wire on the back of the Z3.
Good documentation on the NAV-TV HUR 955 tells me that if I hook the CAN LO and CAN HI that the NAV-TV adapter will supply me with the other signals I need for proper operation of my Z3
HUR 955 --- Z3
-------------------------------------------
12v switched out --- ACC (red)
Illuminatioin out --- ILL (orange/white)
VSS out --- Car Speed Input (pink)
Reverse --- Reverse Purple
This all seems like a bunch of money (The NAV-TV Adapter costs around $500) just for those signals. I think all I really need is the ACC and Illumination signal. I would think I could find those signals the old fashion way.
Does anyone have any advice at this point. I am ready to finish this endless job.
Also, there is so little room in the radio cavity on the Cayenne. Its going to be hard enough to find a place to put the Bluetooth and XM modules. If anyone has suggestions for that, I would love it as well.
Thanks!
Greg