Join Date: Mar 2002
Location: Austin, TX, USA
First, measure the resistance of the ballast resistor and then compare that to the resistance of the wire. If they are about the same, either will work. But I think if you read the directions, the Mallory unit needs 12V for the ignitor and ballast power to the coil. If I'm right about that then you're going to need a 12 volt feed anyway. One nice thing about a Ballast resistor is that the heat is localized in one place instead of through the wiring harness.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI