installing a pertronix ignition today. want to get my 72tii back on the road asap. reading the archives tells me if i have a bosch blue coil i don't need to keep the ballast resistor in line - i'll get a better spark if i take the resistor off line. question - with a bosch blue coil should i keep the resistor in line or not? next question - how do you measure resistance? archives says that resistance must be above 1.5 dc. OK, where do i measure that from? would like to get running soon and best. you guys know the feeling. thanks to all who take the time to offer help.