Blue Eyed Devil
Devil's Advocate
Yes... Basically they detect the headlights of other cars and they dim your headlights automatically so you don't blind oncoming drivers with your brights activated. I think some of them automatically turned on your headlights when it got dark.
This is exactly right for the autronic eye. It dimmed your brights when detecting an oncoming car. The one that turned your headlights on automatically at dusk was a little later though. It debuted on the 1964 Cadillac models and was called "Twilight Sentinel".