are the dash lights turned up to their full brightness on the adjuster? if they are does it look like any of the bulbs are not working leaving dark areas in the dash? the steering wheel has no lights in it at all, you will see small bumps on the controlls,its time to learn braille :)
some models arent dimmable
Most of them are dimmable, but not all have the dimmer dial on the light switch.
Mine just had the headlight raise and lower, but when I fitted front fogs, I had to get a replacament unit and that included the dimmer dial too.
If you get a light switch unit with the dimmer its plug and play.
this will show you how to take the dash out to replace the bulbs