Ballast resistor

tekslk said

What is the diffrence in the 2 prong ballast resistor? I see some have .25ohm .75ohm or 1.45ohm is one better than the other? I no nothing about ohms. I have a 67 barracuda electronic ign, burned out what looks like may be the original ballast tonight just wondering what to replace it with.

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The ballast should match the coil. So the waters are muddy. Here's the info right straight out of the 67 shop manual, with the coils and resistors ORIGINALLY used, so these are for "points" values

My 74 book, which is paper, is similar

Chrysler / Prestolite 2444242 coil, 1.6--1.79 ohms, 9400 to 1170 (must be 11700) secondary
Chrysler / Essex 2444211 1.41 to 1.55 primary, 8000 to 10200 secondary

Ballast (this is the dual one)

.5--.6 ohms (coil side)

4.75 to 5.75 for other side (feeds the ECU)

Below is screenshot out of my 67 manual.