If you have a tester you can check the coil's primary and secondary windings. There is a diagram here: http://www.mymopar.com/coiltest.htm Thanks, Gary H. -----Original Message----- >From: Dodger > > >Remove the negative wire from the coil, and turn the switch on, and then >tap a ground wire to the negative terminal on the coil, it should spark >everytime you tap a ground to the terminal > > >In a message dated 8/7/2010 10:21:22 P.M. Central Daylight Time, >Y1TopBanana73 writes: > > >Went to take the Coronet our for a ride this evening, turned a corner, >hit the gas, and it let out a "PSCHEEEEW" backfire through the carb >and then it was dead. I changed the ballast resistor again...that's >not it. It didn't have spark but I didn't get into diagnosis other >that putting the coil wire near a bolt and cranking. How often do >fairly new coils, or Pertronix units take a dump? Can someone go over >the coil diagnosis procedure for me again? I'm REALLY rusty w/ >electrical stuff. Also, how would I tell the coil from the Pertronix >unit being bad if I have power where I need to have it? > >Thanks > >-- >Bill M ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! 1962 to 1965 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.