Electronic ignition help needed !!

You don't need to make radical changes to the charging system. Pick up a Standard Ignition #VR-128 or a NAPA Echlin #VR-1001 regulator, which is an electronic unit for the pre-1970 charging system. Install it. Run a ground wire from the alternator housing to the regulator base and from the regulator base to the battery negative. Make sure all connections in the charging circuit are clean and tight and in good condition. This will take care of the flickery line voltage that's in mind when cautions are written about ECM compatibility with voltage regulators.