by Fast n Furious » Fri Oct 12, 2018 2:10 am
Quite possibly a stator LT coil issue. There are numerous posting about this matter to review and its a common problem.
To rule this out:-
connect up a digital multimeter to the stator green wire and earth.
Tape the meter to the headset. and set it to the 200v AC scale.
Start the engine and you should read between 60Vac - 200Vac depending on revs.
When your engine dies and still shows a healthy voltage as the engine is coasting down, then the LT coil is ok. If it dips to virtually nothing then its goosed.