In the Technical Docs Dc conversion #12 and #16 both refer to connecting the negative on the dc side of the system (black from regulator/rectifier and battery)to the frame for a ground. It says specifically not to do this on trailtech's sight in the very last sentence in the instructions. Basically, what I understand is that the dc negative is used for dc lighting and any other dc loads and is kept floating (seperate from the frame). On the other hand, the black from the stator, cdi, and coil need to be grounded to the frame and electrically connected in order for the ignition system to opperate correctly. This would also be the ground to use for the kill switch. What's your take on this??