so by auto headlights, you mean just that setting that makes them turn on when it's dark and turns them off when its light or the ignition is killed? If so, I could easily let go of that to have the wipers work rythemicaly and without squeels. Is it hard to remove the cover, and did they work properly when you re-attached the wires after disabling, just in case I want to revert? And by regular intermittent, do you mean I control with the little adjusting wheel to a constant intermittant action?