Assuming the bulbs are good, the dash illumination light brightness control switch is turned off or broken.
check your wiring for your lights under the dash or a bad ground
check your fuses
Start with new fuses...
If all the dash lights are out then there is two causes for this. The first is all the fuses have blown the other is the relay for the dashboard lights has went out.
If you have multiple lights that do not work it's probably caused by an electrical problem such as one or more fuses blown or a faulty connection somewhere.
Is there a penny stuck in the lighter port?
Have you checked the dimmer? I have a 2000 and there is a wheel to dim the dash lights to the left of the steering wheel, just above the cup holder.
Yes, your tail lights will go out when your dash board lights go out.
Fuse panel. Open your owner's manual and read it.
Need to know what about the dash board lights.
check your fuses
try a test light on both sides of the fuse, tail and dash lights are on the same circuit