*Crickets*
I DID find out 1 piece of info. The lime green wire that comes with the radio that connects to a corresponding lime green wire coming out of the back of the radio needs to be grounded. THIS is the parking brake ground. I will do this Thursday when i'm off of work. Maybe then I will be able to finally upload an image. Found this on a 350Z forum.
The Nissan 350Z & 370Z Owners Club • View topic - KENWOOD DDX-4028BT / REAR CAM INSTALL ? SUPERGUIDE
Just spreading the wealth of knowledge for those that may need it in the future.
Still looking for answers on the steering wheel control issue though