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

On the starter relay you have 3 wires, red, violet and a second red wire going inside the car, if you wiring harness is original. Disconnect the red wire going inside the car. These goes to the amp gauge and then to the alt. See if that stops the large draw or short. Try this first, if not you'll have to look at the wire going to the solenoid.

You can also get free wiring diagrams from My Mopar.