I recently aquired a 1986 mariner 20(non tiller & non elec start) I would like to know if this motor has charging system. On the side of the eng there is a terminal block. Two terminals are empty and two terminal/wires run to coils under the flywheel. These wires are seperate to any wires running from the CDI. If this a charging system is the voltage reg already there under the flywheel or should there be one external somewhere and I'm missing it. Also if the system is there what would the amperage be. Thanks