2000 sportsman 500 H.O.. has a new key switch,on/off switch, cdi and stator. (stator is the generic one from china). speedo is no good. cranks and runs great but it will not cut off with left handle bar switch or key switch. i know the kill wire (black) on cdi must receive a ground to kill the spark. it is receiving a ground when switched to the off position but it does not kill the spark. The only way i can get the spark to die is if i take the brown wire (ground wire for cdi) and unhook it. any help would be appreciated