Headlight Limit Switch Adjusters
The rise and fall of the headlights is limited by a couple of switches. The switches are activated by adjustable stops - with rubber pads on the end of the adjustable stops. The rubber pad for the lower stop apparently pushes pretty much straight into the arm on the switch - it was in good shape. The rubber pad for the upper stop - well, it apparently slides across the arm on the switch - and wears pretty significantly.
With the worn rubber end the mechanism had to travel farther to reach the switch - resulting in the headlights shooting up into the sky.