Good idea to have an ign switch on the side of the fuse. Just cut into the wire going from the points up to the coil and run the other side of the switch to ground.. Use a slide switch as opposed to a toggle switch. The engine vibration will make the toggle switch fall apart in short order. been there. I normalle set the carb so, when idle trim is put all the way to the bottom, it would shut the carb butterfly closed completely You could use a servo to operate another switch. You must use a resistor type plug with this motor also.

Gord.