problem with all lights

i have no head lights, but tail lights work and no brake lights. also side markers are out on one side. temp gauges max's out but not in use-after market temp gauges installed. fuel gauge moves up and downd with temp gauge. and im on my third light switch. now the top fuse on block is dead and the three orange wires connected to that line on back are dead? fuse good. i think orane wires are pre fuse. possibly a issue at bulkhead connection...help 71 swinger/318/edelbrock performer/600 holley/dual glass pacs