1994 Grand Marquis

Hello. I have a 94 Marquis where the headlights don't seem to shine too brightly. they look as though they are dirty on the inside. The light on the driver's side looks as though there is condensation on the inside. My mother says she's never noticed it, nor has anyone at the dealership mentioned anything when it had been in for service. I would like to take these off and clean them, rather than purchase new ones. Does anyone know how these headlights come off? Thank you.

Take the carpet away from the light and panels from the inside of the trunk. There are three plastic pieces that srew on the back of the light, unscrew them and take the bulbs out and that is it