ok all i have been wondering about this for quite sometime now... How do i make a sparkplug spark!? Would this circuit work? I simulated the sparkplug with the 2 zero rails. What i would want is when u press the push to make switch is for the spark to be made... This is so then i can incorprate it into making a potato gun Another question related to this is how do i wire a sparkplug? do i need a sparkplug cap? Like on engines? Or can i directly wire them an easier way?