If keep tracing that b/w wire going back, it ends in a two wire plug not connected to anything. I think it's supposed to be like a safety plug if plugged in bike won't crank/start. Not sure what all these says about no spark issue/solution.

 

This thread is so long I can't remember everything in it, so may be repeating, but black/white kills the spark, either when it is shorted to earth (earth to kill) or when it is not earthed (earth to run) depending on the design of the CDI. With everything else connected except black/white to CDI, try spinning engine over and see if you get a spark. If you don't, connect the black/white CDI pin to earth, spin engine over and see if you get a spark. If you do, it is an earth to run CDI.