How do you replace the light for the gauges in the dash board?
Take the steering column enclosure off.
Take the dashboard facing off
Remove the inner Gauge Cluster component, carefully so as not to twist the "ribbon" wire.
Disconnect the ribbon wire. This wire contols all the gauges.
On the back, just replace the build that is burned out. Or if you want, all of the bulbs. I would STRONGLY recommend replacing the bulbs with car based LED's because they don't burn out.