is this normal? i keep my lights on auto all the time. in the midst of driving back to work on lunch, it got dark out and started raining. of course the auto lights came on but then i noticed that all of my dash got a lot dimmer including the radio display. once i got into the parking lot, i played around with my lights... when i put it in the off mode, the dash is very bright, but then i put it to auto and it gets dimmer again. i hardly drive at night as we take my husband’s car.