Hi all first post I've got a ds 650 06 reg was running fine then all of a sudden it won't spark . Check grounds there all fine charged battery that's fully charged which leads me to believe cdi unit as failed so I purchased new cdi and connected it to quad taken plugs out to see if it sparked which it did about 3 times then made a buzz noise on back which I think is the rectrfier any one know any thing about wiring and maybe problem thanks in advanced for you time