2004 Deville, Silver, Gone, but not forgotten, 1972 Eldorado, 1974 eldorado, 1975 CDV
Put everything back to stock and see it it all still works.How can I tell if the radio is truly dead? Take it apart and check the boards and see if there fried?
Did you change the stereo too or just try to add subs? Did you use the right integration harness ? These cars are a little more complicated than just plugging a new stereo into the dash.