The BCM plays also role here as I mentioned. Do yoiur automatic lights work properly? Check your owners manual to see how yours should be working. In my 2000 LS the outer bulbs illuminate at night and the inner bulbs for high beams illuminate during the day (DRL). They are controlled by a small dashboard sensor that monitors outside ambient light levels for the BCM. At the same time , this sensor,via the BCM, also dims the panel/radio bulbs at night and fully illuminates them during the day. If the sensor is disconnected or not working your car may think its dark out during the day by illuminating the outer headlight bulbs and dimming the panel/radio all the time. As I said - check your book to see how yours should work -it might be the same but I'm not certain.