flickering lights 66 dart

Regulator. Mine has done the same thing with replacement regulators and I switched back to my original one for the best results. The smoothest regulator I had on was a electronic one but it charged at 14.6 volts wether it needed it or not. It ended up boiling my battery dry and burning out my tach and most of my light bulbs. Apparently a bad ground to the firewall caused that problem.
toolman