gauge lights in pillor pod

[chippies]

idk if its that well maybe cuz my friend who had a mk3 supra told me he had the same bs n he told me its the lights inside the dash n its the light cluster or some shit like that idk im considerin on changin everythin just to be safe but i need to kno how to change it like a diagram n steps how to change it u kno cuz im new at this shit......
by the way u would happen to kno about head gaskets i recently changed the gasket on my car n it doesnt over heat no more but steam still comes out n i head bubblin sounds wen i pop the hood n look for it, its makin me worried....