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
I appreciate everyone’s very quick replies. Not sure how or when or why, but found my ignition power wire dangling under my dash not hooked to anything. My ignition switch must have been drawing power from somewhere that I don’t know. Ran a quick length of wire from the battery and hooked it up to the ignition switch power wire. Fired the power right on and was able to start the car, I was also not having any of the previous issues with lights and stereo. Now I need to get that fusible link in the circuit to my starter relay and I believe I should be good to go. Again thanks everyone, I love this group