I down loaded the southeast topo map and put it on a new card and when I view it on my garmin astro 220 the map is black is their some way to change that. thanks
Is you GPSr NOT in night mode? Nor in 'auto' mode and being used after dark?
Did you install the mapset and use MapSource or BaseCamp to select and transfer data from the mapset to the GPSr? See: http://www.gpsfiledepot.com/tutorials/how-to-open-maps-in-mapsource/ and http://www.gpsfiledepot.com/tutorials/how-to-load-maps-on-my-garmin-gps-unit/