i have a 1988 caprice classic brougham ls 5.0 liter. on 1990 Chevrolet Caprice

summary: i have lost all power to my car like there is no battery in it, this is after i had changed plus wires due to a miss fire! prior i had changed the spark plugs.. then a dist cap, rotor button and then a whole dist.. since then i put a starter on. i took the hot cable off the battery before removing, now i have no power and no clue. i have checked fuses and replaces all 30amps. anyone have a answer! i would highly grateful..

Asked by for the 1990 Chevrolet Caprice