The brake light switch is located on a bracket at the top of the brake pedal; loosen the locknut and unscrew the switch from its bracket. Disconnect the electrical connector from the switch, then loosen the locknut and unscrew the switch from the pedal bracket. Installation is the reverse of removal. Check and, if necessary, adjust brake pedal height. Loosen the switch locknut, adjust the switch so that the plunger protrusion is within the specified range, and then tighten the locknut. Plug the electrical connector into the switch, ensuring the brake lights come on when the brake pedal is depressed and go off when released; repeat the adjustment procedure if the brake lights do not function properly. Check and, if necessary, adjust brake pedal freeplay.