I need help with a 87 G20 Van
 

I have a 1987 Chevy G20 Van that had a DC/AC Converter hardwired in to the Acc and the ignition harness and it melted the wire ran to it so I cut it and then drove home but now I have no 12v power at the acc and when you try to turn over the engine the gauges don't work and the Van will not crank... please help me... my Email is Brent.miesse@yahoo.com