Blows Main Fuse at 1/4 Throttle???

you dont have current anywhere near 30a going through regulator, 30a is a lot of current, even if regulator f@@@@d it would only increase volts to battery not amps. that kinda current is a dead short, is cable snagging somwhere ie on body? sleep on it then go double check, hint, big wires = big current,you gotta be looking at cables 4mm upwards, i know on my barracuda there was a thick cable from alternator going thru bulkhead into ammeter in dash, man that cable was toasted! i replaced it, ran another thicker cable in parallel direct to battery solonoid.<keeping ammeter> wiring/electrix just need to be broken down into circiuts and not letting a bunch of wires confuse us, i bet you could single out a hot chick in a room full of uglys? just single out that wire in same way, good luck,let us know

I understand and there is only a few of those type of wires on this car.
Kind of weird that at idle it is fine all day long when that is where the car shakes the most from the lumpy cam. Rev it up where it smooths out and pop goes the fuse. The stock wiring harness has been hacked over the 40 years of its life. Early on when I got the car I cleaned up alot of it when I wired in the MSD Digital 6 Plus ignition. I REALLY will at some point take the time and install a WHOLE new harness for the complete car.

WHERE can you buy a complete harness for a 70 Dodge Dart?? Where do I get it??

I will let you know what I find. Thanks