dash lights flicker on 1990 Toyota Cressida

the dash lights flicker a little. could this be a ground problem? how can i fix it my car is a 1987 year

Asked by for the 1990 Toyota Cressida
Check the dash light rheostat it may be failing. Autozone have some popular workshop manuals for free on line once you register (for free) on their website
and get an online repair manual subscription.