I have the f90bt and for the life of me the freak'n navigation gives me hell. First the 3d north arrow won't re align it's self while driving it looks like your going in reverse. Also the 2d which I was so interested in I can't figure out how to show buildings. Does any one have any suggestions if not this worthless 700 dollar sh_t is going back!

 

Not to sound like a jackass, but have you read the manual?

I've been thinking about picking one up myself. Check www.avic411.com They should be able to help.

- NCSU

 

You have the speed pulse & reverse wires correctly connected? Either of these would cause the unit to not work correctly

 

the 3d buildings dont show everywhere. I have yet to see a 3d building.......