[Fot] Coil Resistance

Randall tr3driver at ca.rr.com
Fri Apr 15 14:44:02 MDT 2011


> Pertronix likes 3 ohm.
> It doesn't care if you run a 1,5 ohm coil with a 1,5 ohm resistor or
> just a 3 ohm coil.
> Only 3 ohm.

I agree.  Total has to be (approximately) 3 ohms, doesn't matter if it's a 3
ohm coil, or a 1.5 ohm coil plus a ballast resistor.
Other combinations may appear to work at first, but risk burning out the
module (1.5 ohm with no ballast), or producing high speed misfire (3 ohm
plus a ballast).

Note that the red wire to the module needs to get full 12v, it can't be to
the coil if you are using a ballast between there and the switch.

-- Randall 



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