Thanks. I knew about the fact that you can open the little metal "port holes" to gain access to the light bulbs, but it didn't seem secure enough to pull the bulb out of the base and insert a glass bottom bulb into the slot in the old base. Since this is a project car, and I don't have to rely on it to be ready in the morning to go to work, I thought that I would go ahead and replace the bulbs from the back side, so that I could replace the bases with new bases and bulbs. I had the unit all apart, but I couldn't get that printed circuit board off of the unit, because the ground unit just wouldn't budge. I took it to the Corvette parts store, Coast Corvette, and Gene told me that you just have to work the thing back and forth until the ground unit loosens up and lets you slide the printed circuit board off. I took it home and messed with it until I finally said "screw it" and "I'm going to end up breaking this circuit board, then I'll be in a world of do-do". So I was able to lift the cicuit board up just enough to replace the burned out bulb with a new one and put the unit back together. I used curved needle nose plyers to insert the bulb and base into the hole and turn and lock it. It was the only one I could access this way. Put it all back together and put the car back together and the new bulb works. Of course, it's brighter than the old bulbs, but at least I can see my temperature reading clearly. I watch the temperature gauge the most. I ordered a set of bulbs from the Corvette parts store, so that when I find out what the "magic" is to remove the printed circuit board ground unit, I'll tear it all apart and do it again. By the time I get done with this I'll be an expert. While I had it apart, I did some "repairs" on some of the broken dashboard parts that are usually hidden from sight. I think the WWF wrestled in this car.