The 41 panel can be gloomy at the best of times. I believe that the inner glass (with the numbers) was designed to be lit from the edge. I had a lot of dust and sealant in there. If you clean the edge of that glass it helps.
I also repainted the inside of the gauge housing but I still wasn't happy.
I added a string of LED lights (made up from some battery operated Christmas tree lights) to illuminate that glass edge and it's much better.
