no head, tail, insturment or inter. lights

Hey guys. I have a '94 K1500 and I have no head lights, tail lights, gauge lights or inter. lights. I checked the fuse and they are ok, but when I was checking them I found I have no power to any of the fuses that are for those lights in or out. any Ideas? I checked all the fusible links in the engine comp. they all checked out ok. Any ideas or a wirring diagram would be great!! Thanks!