The switch has a plunger in it that contacts a lever in the brake pedal assembly.
Ford galaxy brake light switch replacement.
The brake light switch is a mechanical switch activated when you press the brake pedal.
I show how the ford galaxy built in 2011 comes to the pears from the stoplight.
Ford galaxie club of america 665 so cal galaxies.
Ps find a better parts store.
Brake light switch is 1 8 pipe threads and the other two are for 3 16 flair fittings.
As that plunger is depressed when you push on the brake pedal the contacts in the brake light switch closed and voltage flows to the brake lights turning them on.