To replace the brake light switch slightly pull up the locking tab on the switch connector and peel off the wire. Subsequently, to release the hairpin retainer, follow by slipping the brake light switch, accompanied by the pushrod, and nylon washer out from the pedal, separate the washer and afterwards, turn the switch up or down. For models that have speed control, there is a replacement of the spacer washer by the dump valve adapter washer. For installation, this switch should be mounted, while placing the U of the switch close to the pedal and directly above or below the pin. The switch is slid to enclose the master cylinder pushrod and bushing between two side plates of the switch and then the switch and pushrod assembly is pressed as close as they can to the brake pedal arm. Fit the outside white plastic washer to the pin and clamp the hairpin retainer, be certain to use an authentic hairpin retainer. Last, connect the switch and make test of brake light operation, then see if there is enough wire movement while pedaling through the entire range.