on my nh engine the points are closed except when it fires. and when the points open is when the spark happens. that's why they have a spring on the trip to cause them open with the snap and you only need about a 1/32" gap to cause the spark.
i use a 12v battery and a "universal" magnetic ballast pt#200h200i which cost me $6. the upc code is 768386133650 and it probably can be purchased at any electronic supply house.
i use a 12v battery and a "universal" magnetic ballast pt#200h200i which cost me $6. the upc code is 768386133650 and it probably can be purchased at any electronic supply house.