Phil,
There is a light under the chrome housing that shines through the plastic letters/numbers. I don't know off hand which fuse powers this light. Your problem is most likely the bulb, unless there are other electrical things that are not working.
To replace the bulb, pull up the carpet covering the tunnel starting on the right side, until you have access to the 4 bolts holding the chrome cover in place. Unbolt the cover and lift it up to access the bulb. Be careful because the white plastic piece may be fairly brittle and you can easily crack it. If it is cracked or broken, then this is a great time to replace it.
Regards,
Stan