I have a 1991 pontiac grand prix. Was driving and lost all my lights (headlights,marker lights,dashlights,tail lights).I have turn signals and lights inside when open the door. I checked all fuses and they are fine but i have no power going to those fuses. the light switch has power to it but i can only get interior light to go on or off when i use the switch. I even tried a new headlight switch. Please help if you have any ideas. It does not have a body control module I already checked to see if it had one of those.