Free the cable from where it connects to the negative part of the battery. Take off the front surface and the middle console piece. First, detach the radio from its mount by undoing the screws. After that, take out the radio until you can disconnect both electric wires and the antenna cable from the backside of the radio. Installation is the reverse of removal. To take out the speakers in front doors, pry off first the door trim panel, then unscrew each speaker. Take off the speaker, detach its electrical connector, and pull it out, putting it back in the vehicle in the reversed steps of this process. When you want to replace the speakers on the rear doors, first take out the rear door trim, then take out the mounting screws covering the front doors and speakers. To replace a speaker, take out the speaker unit, detach the electrical connector, and pull off the speaker. Reassembly follows these same steps in reverse order.