Are the button lights on the Empeg supposed to shut themselves off when the headlights are off and turn themselves on when the headlights are on? My unit has always stayed on regardless of headlight status. If the light kit is set at level four with the headlights on, this is how it remains when the headlights are off. Although it dims with the level of the display. Is this how they are supposed to work?

Thanks,
Stu