VW Beetle 1950-69
VW Karmann Ghia 1950-69
VW Bus 1950-69
VW Type 3 1962-69
VW Vanagon 1980-91

This brake switch threads into the master cylinder and operates the brake lights.
A simple open-close (on-off)circuit.
(If your car is a Vanagon make sure switch is two prong.)
Use with 6 or 12 volt systems