These parts are helpful when converting a classic 1950's car from its original brake system to a modern power brake system. Some original brake light switches were originally built into the pedal assembly but when you change to a modern style pedal, you lose that function. An easy way to regain it is through this hydraulic brake light switch kit.
 
Included:
Brake light switch
3 way tee fitting- to install this switch on 3/16 brake lines
2 tube nuts, in case you need to cut and flare your brake lines to install this