Mercury E9AZ-13480-A Stop Lamp Switch

The brake light switch is located under the dashboard above the brake pedal. It is activated when the pedal moves away from its bottomed position, closing an electrical circuit. The switch is mounted in a metal bracket that can be adjusted by bending it. Ensure the switch is fully seated in the bracket and use an assistant, mirror, or test light to determine when the brake light circuit is activated. The switch should activate within the first 1/4-inch of pedal travel. If not, bend the bracket up or down to achieve the desired results, but avoid preventing the pedal from fully returning. The factory recommends a 25-pound or less pull up on the pedal to adjust the switch. Always ensure the brake lights are off when the pedal is at rest.