I've been trying to chase this electrical issue for months now. When I'm driving the screen shows anywhere from 11-15v depending on if I'm on the gas or not. When I'm at idle it slowly drops to 12 or below. The headlights and dome light also are dimming and flickering very bad, so much so that I'm not comfortable driving at night in it. I've replaced the alternator twice, as well as tested the mskt recent one, just tested the battery as well as cleaned the terminals and the ground point for the negative lead. I also just put a new current sensor just to be sure, but it did not improve anything.