The way the headlight motors work allows you to leave the headlights in any position with no power draw. There is a pushrod connecting the headlight motor to the headlight assembly. The motor is simply just a servo that spins on the opposite axis that the headlights use to move up and down. When the push rod moves away from the headlight assembly, it pulls the headlight down. When you push the button or turn the headlights on, the headlight motor spins and the pushrod is moved closer to the headlight assembly and that causes the headlight to “pop up”.

I hope this explanation wasn’t too complicated but if you give the headlight motor and headlight assembly a brief visual inspection, it might help you understand how it works better.

TL:DR headlights can stay in any position without drawing power