No power to ignition or dash

Hey guys, I have a 69 barracuda that I’m having issues with. I’ve recently switched out the carb for a sniper efi set up. Having high draw for the pump and some fans I installed I have upgraded to the 110amp 1 wire alternator. Way better charging, although after the new alternator install, anytime I would brake or turn on my headlights or even signal I would lose dash lights, stereo would turn off and even my efi screen would shut off. While crawling under the dash tonight I had a loose wire that would have gone to the old alternator hit my frame under the dash and cause some sparks. I then had 0 power to my ignition switch, or lights stereo, or displays. I changed all fuses out and still have no power. I have a switch for my electric rad fans that works fine still and battery is reading proper voltage. Does anyone have suggestions? Thanks