It does not change automatically. The headlights have to be turned on to get the map to switch to night mode. The unit can also be set to always display in night mode in the settings.
Ok, I will have to take it back to the installer. On the X920 there is no option at all for night mode. Only Automatic and Day.
Ok. Thanks, but the unit itself wont change from day to night correct? The only way is to have the illumination wire connected? My old f900 unit would automatically switch from day to night according to the time on the unit.