Pertronix 1381a
Here's another version of the piggy back terminal.
Either one allows the original wire and connector to remain intact.
A little confusion can come from the diagram saying wire to ignition. Most people think of power as coming from positive. So rewrite that in your head as wire from ignition. What that really means is ignition switch's 'run' wire. Its generally dark blue or dark blue with stripe.
Ballast resistor or not. The ballast resistor is there to control the amount of current flowing through the coil. IF this particular Pertronix system has a current controller for the coil built in, then the ballast is not needed. If it doesn't have a controller in it, then the ballast is needed.
Here's another version of the piggy back terminal.
Either one allows the original wire and connector to remain intact.
A little confusion can come from the diagram saying wire to ignition. Most people think of power as coming from positive. So rewrite that in your head as wire from ignition. What that really means is ignition switch's 'run' wire. Its generally dark blue or dark blue with stripe.
Ballast resistor or not. The ballast resistor is there to control the amount of current flowing through the coil. IF this particular Pertronix system has a current controller for the coil built in, then the ballast is not needed. If it doesn't have a controller in it, then the ballast is needed.
