[IHCC1250]

I screwed up! I lost all power to my cub cadet 782. I installed a new volt meter and the + and - terminals were too close together and shorted out. I now have no power on the key switch. No headlights, no starter, nothing. I tried another fully charged battery and still nothing. I had a bit of hope it was just a fuse, but my model is less than 719,999. So there’s no fuse there. What shorted out, and what is causing the problem? I have a couple things here. I have an edited version of the 782 wiring diagram that shows my wiring mess/ setup. I also have the original serial number and wiring diagram. My 782 is made of June of 1980. And has an engine swap. A 16hp Briggs and Stratton opposed twin engine. With magneto ignition instead of points. Any help would be greatly appreciated. Thanks