Changing gauge cluster light bulbs - How To

Before pulling the instrument panel please disconnect the battery.

And Dana is correct, check the light switch "dimmer" switch. All the way counterclockwise just before the click to turn on the dome light.
I would like to add my 2 cents. Check and clean all the grounds leading into the dash or firewall.
Even in the new cars, I found the grounds are the most problematic. I clean and use dielectric grease on all exposed contacts, hot or grounds.