I see the CityNav Night Mode Map works with the Oregon/Colorado/Dakota. Does anyone know if it works on the Etrex 20? Just wondering.
Thx
Night mode is a set of display characteristics that are embedded in the map. It will display on most Garmins when the GPSr thinks it's night.
According to manual there is night mode in new eTrex series. But not in Dakota.
The OP is not talking about "Night Mode" on the device, he is talking about this map: http://www.gpsfiledepot.com/maps/view/440/
But if, as popej says, the eTrex 20 already has a night mode, then I don't know why you would want to use that map.