i bought broken Piaggio Sfera 125 ('97) - same electric as Vespa ET4 125 (96-99) with no spark and no lights. +12V (white wire in diagram) is working after turning ignition on. So brake light, turn signals, horn, fuel level indicator and starter is working. I don't know if the main lights go on with ignition on or after engine running only. Battery is new, regulator is new, sparkplug, main HV coil, HV cable, all new. +12V is going to regulator OK, but there is no output from it to yellow line. I don't know how much ohm should be on a stator coils, but it looks OK (at first sight). There is some AC volts to CDI from stator and pickup sensor. Actually i got all wiring off the scooter and everything should be OK. Still isn't
SO - white +12V DC from ignition is working, green stator AC to CDI is working, but even with new regulator it can't switch power to grey for lights and autochoke and i don't know why. Any advice?
Thank you and sorry for my english