Twist the cable off from the battery negative terminal. To reach the center trim, Camry owners should slide a trim tool under the central button above the radio to push it out, and then carefully pull off each side panel. Unscrew the retaining nuts and carefully move the radio/navigation unit aside to see the back. Disconnect the wires and antenna wire, one by one. First remove all mounting bracket fasteners and brackets. Remove the radio/navigation unit from both the heater control panel and the A/C control panel. Finally, remove the separate radio unit from the navigation unit. Installation is the reverse of removal. Take out the door rim panel. After that, take off the mounting fasteners, and carefully pull the speaker from the door while disconnecting the electrical connector. Installation is the reverse of removal. To take out instrument panel speakers, use a trim tool to slide under the speaker covers, slowly lifting them out. Remove the mounting screws, pull the speaker up and straight out, disconnect the wires, and remove the speaker altogether. Installation is the reverse of removal. To get to the rear package shelf speakers, take off the rear seats and the rear package shelf. Then, unscrew the mounts and take out the speaker, as you detach the electrical wiring. Installation is the reverse of removal.