I am very disappointed because the Bosch ignition capacitors I bought were bad from the start. As in the old days when ignition capacitors were the norm, I tested each and found that they are both grounded internally. So none will work in the app. If the points are open, no current should flow through the capacitor. But both are grounded all the time no matter the points are open or closed. I'll have to see if I can find used capacitors at a reduced price as the new ones don't seem to be of the quality you might expect from the Bosch brand.