Stop Lamp Switch

Stop Lamp Switch:

The stop lamp switch is located under the driver side I/P touching the brake pedal The stop lamp switch is used to turn On the stop lamps and to serve as an input to the ECM. The stop lamp switch is normally closed with the switch out of the vehicle (brake pedal depressed, plunger released). Battery voltage is supplied to the cruise control module, ECM and stop lamps through the stop lamp switch whenever the brake pedal is depressed. When the brake pedal is released, the ECM input goes low and the stop lamps turn Off.