No interior lights

my interior lights,radio, dash lights,brake lights, gear shift lock,trunk lock, gas cap release will not work. someone suggested the light control module. i do not know were that is. any suggessions? it is a 1997 continental front wheel drive

Hard to say without having a wiring diagram to look at,but look at the fuse list in your owners manual. Is there a fuse labeled battery saver relay?

If that fuse is not blown try swapping out the battery saver relay with another.