Hi All, I have a 67 400HO –All four headlights don’t work. Front parking/turn signals work fine. Since I’m assuming that the headlights are on the same circuit as the front parking lights, could it be the switch? Pulling it out closes the circuit on the parking lights on the first “step†in the switch, and all the way out to the second step should be the headlights. But nothing happens. Thoughts?