Posted by mkirsch on September 04, 2012 at 07:11:05 from (64.80.110.74):
In Reply to: oliver 77 posted by pulling kid on September 03, 2012 at 06:47:24:
The coil has two terminals marked + and -.
On a 6V positive ground system, the - side is connected to the power coming from the ignition switch. The + terminal connects to the distributor.
To "change polarity" all you do is swap which wire is connected to the + and - terminals on the coil. The - terminal now connects to the distributor, and the + wire goes back to the ignition switch.
Do you have a ballast resistor installed in the wire between the ignition switch and the coil?
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