Boyer electronic ignition becomes taser after many hours use. BSA 441 cafe

Have not seen this happen before but the recent intermitant running and lack of higher rev sparks leans towards a short in this black box or stator plate coils. Usually when you connect or disconect the white power feed there is a single spark. I have about 4800/min on turning on the power quickly draining the battery. Debating points but will get another ox I think though a newer version perhaps.

[@1439of2000]

Yikes! I have a 67 441 Im going through now and these things for being "simple" are kind of a pain.

[@AaronRiegel]

Ditto, I had spark and then it disappeared. New coil; nothing. Testing Boyer next...