CPI lighting ‘flattens’

Hello, Before a few technical data: CPI bingo Bj 2002 10 years of service life (for 2 months back on life ~2000 kilometers in time driven ) Mofa papers (grossed on 30 kmh) Renewed for service life: Cdi ignition coil battery tacho wave tachoscnake variomatics weights(not new but as new=the old ones were already almost angular) So now to the problem: For a few days (actually nothing special, unusual happened or noticed) Starts the lighting to ,flacking ‘ Standlights tacholight and dipped-beam (he has no light) catch during the ride and also occasionally in stand to become brighter and darker What goes on to me and the drivers also Sometimes it runs for a few minutes without problems and then it ‘flakes’ again (the light does not go off but only gets strongly bright and dark in short distances) As said all lighting flickers Whether this is the case with the rear light I can’t say what could it be? Ic h hope it’s on the voltage regulator Can that be? Otherwise, only the alternator would be eligible to break what I don’t hope I thank you in advance for your help greeting