Speakers in doors are fitted before they are shipped from the factory and extra rear speakers are fitted in models equipped with AM/FM sound systems. Your particular model might deviate from the following process because of the configuration of various popular kinds of speakers used in certain versions of SH cars. They include; SPEAKER: Audio of door speakers can only be accessed after you have stripped the door trim panel and also after the removal of the screws that was used to fix the speaker to the door. Take out the speaker and unplug the electrical connection from it, do not use the radio with the speakers removed. Installation is done in the opposite to the removal procedures enumerated above. To decommission the rear speakers, one will have to unscrew the speaker and pull it out from the trim panel then disconnect the electrical connection with the speakers disconnected, do not operate the radio. It is also done in reverse to the removal process that has been explained above.