You should also have two under dash lights also. If you dont have the dome light on you mostlikely dont have the under dash lights on either. Bend over and take a look there's one under each side to light up the floor. If all are not working when the door opens, do like they said above and check the fuse, then look behind the glove box OR under the dash someone may installed the switch to turn them off when the doors are off. Good luck.