Parking brake indicator light switch

The utility model relates to a parking brake indicator lamp switch which is used for ensuring that parking lamps are in a normally open state as parking brake reacts. The utility model is composed of a metal connecting reed, a plastic casing, a base and a spring, wherein the spring is sheathed on a guiding post of the base and the spring and the guiding post are together arranged in a guiding hole on the plastic casing to be used for bouncing and resetting the plastic casing as a parking brake rod is pulled up. The metal connecting reed is embedded in the plastic casing, and moves up and down together following the plastic casing. The upper end of the metal connecting reed has a connecting point B, and the lower end has a contact point A. The contact point is corresponding to the base, and is in a contact or a disconnected state during move. Vital parts of the utility model is composed of two parts, wherein one is the metal connecting reed and the other is the plastic casing. The utility model has the advantages that the upper end of the reed is used as the connecting point B, and the other end is used as the contact point A. Thus, the metal consumption can be furthest reduced and the weight of whole vehicles is lowered. Furthermore, the structure is simple.