digital dash, or normal dash? were the lights dim before? was there any kind of power surge, like maybe hooking up jumper cables backwards?
I had the same problem on a 90 thunderbird, digital dash, when i hooked the jumper cables up backwards. I was in a hurry and i mis-read the symbols on the spare battery i was using. Blew out every bulb in the dashboard.
There may be a fuse somewhere. If it's the bulbs you need to take out the instrument panel, take it apart, and replace them. It's kind of a pain, but it's not too bad. They're just the normal small bulbs from NAPA, don't get them from the dealer.
odometer is probably a loose connection. if you take the cluster out make sure all the connectors on the back are tight