How do you replace a Volvo 240 radio?

To replace a Volvo 240 radio, first, disconnect the car battery to ensure safety. Remove the trim panel surrounding the radio, then unscrew the mounting brackets and gently pull the radio out. Disconnect the wiring harness and antenna cable from the back of the old radio. Finally, connect the new radio's wiring harness and antenna, secure it with the mounting brackets, and replace the trim panel before reconnecting the battery.