You do not really say what the problem is but I presume it is dim or something like that.
The is a single electrical connector in the rear of the instrument cluster.
The cable to the cluster receptacle is a bit short, and over time, the pulling by the cable slightly disconnects some of the pins. This often shows up as the fuel and temperature gauge not operating.
Perhaps the pins that feed power to the dash lights are not quite connecting.
The fix is to remove the instrument cluster, or at least expose the top right corner, unplug and then replug the cable back in.
This may not work but other than labour, costs nothing.
The only other thing I can think of is the rotary dimmer wheel located under the headlight switch. Perhaps it just needs exercise. Probably it is rarely moved and has sort of froze up.