First startup attempt, Melted wire....Help!

Thanks all you guys, I have un-hinged the dash and rotated it down so I can get a good look at the underdash wiring. Once again, all of the wiring underneath, fusebox and pigtail going to the rear lights are all new....Plus the Dali Lama said I will achieve perfect consciousness before I die....So I've got that going for me. I really appreciate all the diagrams and explanations. I'll get a fresh outlook and start probing in the morning.