Another thing I'd like to add is after searching the Internet for literally an hour I've discovered these unit have a tech menu. But once again no where does it say this in the manual. I had to try a few codes and finally one worked which opened a new menu and allowed me to turn the RDS on and off. It also allowed me to disable the parking brake bypass for the DVD. There's other functions in the menu but didn't seem important.
I hope this helps anyone who has this system or plans on buying one. It's a great system for the money and so far I have full bars everywhere I go with gps