Would the adaptors from this site work?
http://www.quickconnectproducts.com/Find/find.php
I am thinking of adding a ND-G500 to my 08 Saturn Vue. After finding my harness, I am trying to ensure that this has all the connections needed for the ND-G500. Please let me know if any of you have used this option. I may just order it this weekend and let it known of my experience.