i have a 97 and have done this many times
get on the back seat, look at the top housing, get a screwdriver or use your bare hands - pull up at the front and it should slide right out, then at the back will be a wire and a clip holding the harness down to the bulb assembly, then unclip it...now u have the subwoofer cover in your hands. turn socket counter clockwise and pull, then change bulb, now do reverse of what i just typed