my car dash board and radio lights have gone out which may mean alternator issue on 2008 Mercury Grand Marquis

not only are my instrument and radio illumination going off and on intermittently but my automatic door locks wont lock when i pull off. also my remote door lock wont lock or unlock my doors or pop open my trunk. now my rear defroster wont operate. is this a source of one issue or multiple issues? I have looked into my fuses per manual and found nothing burnt out.

Asked by for the 2008 Mercury Grand Marquis
have the charging system ck'd to start with