On my 01 EX V6, the temp display in the center console has been dim/bright off and on for a year. Now it's looking real dark. Just annoying, not affecting the function. Is this a bulb, or is the LCD lighted internally? If it is replaceable, how do you remove the center unit with the radio/heater controls? Any guidance is appreciated. I’d like to tackle it when I’m off for the next week.