ive read this one before and it says not to ground the yellow with black but then theres another one that says ground.
i got the key ignition but its off in the pic and no the bike was in partssomeone else can prob give you a better idea. i noticed in your pic there is no, key,ignition also.Did it even run when you bought it???
its for now to get the bike running how it supposed to, i guess ill try older cdi tomorrow see what happens.im not sure but those wires grounded where the headlight is supposed to go dont look to professional
Did you set the float level.
Did you adjust the idle as per specs.
Try a new plug, and please do a leak test before you cook it.