Nav button on radio is for voice announcements. You need to press map button on right display, then acknowledge with enter key. If nothing, then you may not have a CF card for the map to work. Uh oh! Dealer issue!Hi fellow Wingers. I just bought 2008 GL1800 with the Honda Navi but neither owners manual nor the extra Navi manual were included. I have been trying to verify the Navi works but need some instruction on how it operates. I see the Navi button on the radio display and the controls on the right side control panel but have not been able to get to a map display or place to enter a destination. I have searched online for a pdf of the manual but no luck there either. I would appreciate getting a copy of the manual or some basic instrucion on how it operates. The display opening ceremony does have a screen that shows "Navigation" when the bike is powered on.