Switch is normally open - Closes when this modern switch turns brake lights on at 45PSI rather than 95PSI on old switches.
This switch is a must for any brake system with an out-dated brake light switch.
This allows faster signal to your brake lights. This is the perfect solution to an old, corroded switch and a must for any new brake job! Switch is 1/8" NPT used on Many old Ford and Mopar vehicles