HEad light switch and wires

while driving the new duster home the other day the car blew a fuse and the parking lights stopped working, Dash lights also didn't work, I bought a new switch but after i pulled the dash out i noticed that the harness going to the switch was had melted :oops:

this must have been like this awhile, there was some old electrical tape around a few wires and well, something must not have grounded right, or grounded wrong.

does anyone have a diagram and maybe a few pictures of the wire harness, specifically the color wires and where they are positioned in the harness. Thanks.