Brake light switches exist as so-called "opener“ or "shutter" switches. When operated, the contact is accordingly either "opened" or "shut". In the case of all of our switches, we state which of the functions applies. The brake light switches of the Vespa wide frame models are perfectly suited to retrofitting to a brake light.
SIP TIP: For retrofitting to 12V E-ignition, a "shutter" is always required.