Hello, finally i managed to unsolve the mystery of a black box. It is a horn rectifier. It is no longer in production by Piaggio, but sip scootershop produces replacement one. You can also buy a used one. I didn’t see it in Bravo models from the 1980s, only in 1990s.

Yes, it doesn’t work. I know that, because i have three black boxes. Only one, attached to the electrical system of Bravo, makes the lights and horn work. The other two boxes make no effect on lights and horn. Of course even with a faulty black box the engine still works just fine – it’s only for lights and horn. It is connected to horn, front and…[Lees meer]

The photos of the black box are from another Bravo with homemade wires, but the black box is factory made in this Bravo model. It is 1990 Bravo EEV2T with variator, electronic ignition, but without turn signals. I guess it can not be a battery, because the horn does not work when the engine is off. Look at the scheme, the wire colors are factory…[Lees meer]