The system is mainly used in water motor sports (jet ski). The emergency ignition interrupter is simply screwed to the frame or inserted through a hole in the fairing. Not only optical hit but also very useful e.g. in case of a fall, the ignition switches off directly and the engine does not come to damage. Also usable as an inconspicuous immobilizer. The connection is very simple, but different for each vehicle. You only have to identify the ignition breaker contact on the ignition lock, this is the cable which connects the CDI of your moped to GROUND (-), which causes the engine to shut down. There the black cable is connected. The white cable goes to the frame of the moped.