How do you remove speakers from a 1982 Buick Riviera?

To remove the speakers from a 1982 Buick Riviera, first, disconnect the negative battery cable to ensure safety. Then, carefully pry off the speaker grilles using a flathead screwdriver or trim removal tool, being cautious not to damage the dashboard. Once the grilles are removed, unscrew the speakers from their mounting brackets and disconnect the wiring harness. Finally, lift the speakers out of their locations.