Manual of Video Interf. Porsche Cayenne '03

I purchased Car Video Interface for BMW New 7 and Porsche Cayenne from you as recommended for the
Porsche Cayenne 2003. It did not come with any installation instructions?
I can download the user manual online but this does not have any instructions for the Porsche?
Porsche Cayenne 2003. It did not come with any installation instructions?
I can download the user manual online but this does not have any instructions for the Porsche?