I need to replace or fix one of the light bulbs in the gauge cluster, its the small blue colored light bulb behind the speedometer. The whole tip of the light bulb is now a solid silver instead of blue. I have been looking for a replacement light bulb but can't find any online. The only thing I was told by both Auto part stores and a dealership is an aftermarket one (639-046) but it seems to be too big. Does anyone know what type of bulb I can get to replace it?