I am clueless on this wiring, I tried to search but I didn't see any 'wiring for dummies' titles.... I have a Chev sbc 307 out of a 72 chevelle and has original points dizzy. I wanna upgrade to the pertronix electronic kit that goes into that dizzy to remove the points. It is my understanding that the orig coil should have some sort of resistor (that I don't have). Will the coil still need this resistance after I add the electronics from pertronix? Where do I buy 'resistors' if I need one? Thanks...
No balast resistor is used But you will need a new coil for electronic ignition. Pertronix sells one for use with their set up.
Read AND follow the directions that come with the Pertronix unit and you'll have a successful installation. I put mine in the '32 almost 10 years ago and have not had a problem. Frank
You can use a stock coil, but the PerTronix is reccomended as it is a hotter spark with a faster rise time to take advantage of the better signal from the Ignitor, especially if you run the ignitor II. Measure your voltage at coil positive, if it is 12 volts or higher with a full battery charge you will either want a 1.5 ohm or higher resistance coil or a 1 ohm balast resistor. If you measure 8 or 9 volts you don not need a ballast resistor as the car has a resistor wire. If you are doing this with a PerTronix Ignitor installed, do not leave the ignition on for more than 30 seconds while reading the voltage or you can fry th emodule.
I had the same question when I installed a Pertronix unit several years ago. I contacted Pertronix tech support, & was told it would work fine up to 16 volts. Bob
This is especially true in Chevrolet's as the distributor has a gasket that can isolate the ground. The clamp needs to be absolutely clean with no paint at points of contact. I have even seen cases where chrome hold downs got a little oil under them and lost the good ground! Not as big a problem with Ford's since they use an O ring further down, not a gasket.
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