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

First things first, I disconnected the power wire feeding the interior (pictured) hooked up the main battery lead and ground as well as the accessory feed...No smoked fuse. Problem must be inside. In thinking things over, when I first connected the battery in my original way, there was no melted wire or apparent short. Headlights worked, front parking lights worked, rear side interior lights and tail lights worked. None of my turn signals or dash lights or radio lit up. Problem began when I first tried starting the car, that's when all hell broke loose. These may be clues to tracking down the problem... BTW, I will go to the auto parts store and get a new, 3 wire alternator. It is obvious from these posts that it is needed. Thanks