wiring problems

[chris77k5]

I am having some wiring problems my running lights don't work, no brake lights,the right turn signal works but when I turn on the left it blows a fuse, my head light work please help I have took the tail light a part they look good thanks

77 k5 400sb, edelbrock rpm, carter 625,4" rancho 3" body, 3.08 10bolt 12bolt 33-12.5 soon to be 4.56 and 35s bfg km

 

[hammer]

Major ground problem