Yes, I do have the ground wire from the spark cap to the engine frame(that wire is there to insure a good electrical connection between the plug ground and cap ground), but the ignitions electrical ground(return to power source) comes from the connection of the HV wire's shield to the circuit board ground. In order for there to be a spark, you need both the HV wire, and a ground return to the power supply. Mine was sparking both at the plug gap, and at the broken ground connection at the circuit board. Not good sence its not shielded there. I've decided the ground connection should be made at the ignition unit rather than the battery, to avoid any high voltage noise leakage back into the battery/ignition kill switch. Unless someone knows better?

Kevin