I have a trail tech voyager. Sounds silly but do I have to download a map in it. The map function is blank, I guess it's waiting for me to import a map in it. Where do I find a downloadable map for for dualsport/Forrest riding, in Northern California . I went to a dualsport event and downloaded a GPS file in it and an arrow showed up but no map. I just kept the arrow straight, on the blank screen.....geez what a pain. Any help would be appreciated. ok ok I'm 60 but I can't still ride.