Me, I would buy a good used under dash harness and send it to someone like me for a few minor upgrades ( power distribution mostly ). I don't know what YearOne did in changing to electronic ignition ( I can only hope they upgraded the charging system wiring too ) but I do know the factory under dash wiring didn't send enough power out there to run these properly. Your ignition switch connector has 2 wires crimped in a single terminal. One of those goes nowhere except inst' panels gauge voltage limiter. The other of those 2 goes to engine bay to power ignition system and charging system.
Upgrade charging system and ignition system, ignition switch supply and demand suffers as does everything beyond it.