...or a resistor in the coil. If you have a points system, you will have some sort of resistor. If one is in the coil, it will say on the coil. You may have a ceramic balast resistor, a big white block in the wire to the coil. Either of these cases are simple, if you have a balast resistor, simply remove it and connect the wire that went to it to the coil. If you have a coil with an internal resistor, simply wire its power wire to the new distributor. If you are unlucky, you will have a resistance wire that runs from the ignition to the coil. If this is the case, you will have to trace it back to the ignition, remove it, and replace it with a normal wire. Since this is a boat, you will most likely have the external balast resistor.