Electrical problem
1990 Acura Integra 4 cyl Front Wheel Drive Manual 270000 miles

i was driving on the freeway yesterday listening to the radio and all of sudden it shut off then when i look at my cluster my temp gauge reads cold my rpm gauge reads 0 and my gas gauge slowly but surely drops to E even though in the morning i filled it up. But the car still seemed to work normally does anyone know how this could happen. and how to fix it