1998 Chevy Caprice wiring

My interior lights didn't come on when i opened the car door.I have no heat no radio no turn signals and no tail lights. i do have brake lights,and also headlights. the only thing that happened today,i purchased a tv and they loaded it in the truck. they really put it all the way back in the trunk.i noticed some wiring hooked up back there. would that have any thing to do with it,a short perhaps.the power windows work. and the door locks