Posted by John T on February 14, 2014 at 05:41:26 from (71.0.64.117):
In Reply to: Ignition wireing posted by Tvertiz on February 13, 2014 at 19:09:04:
A "switched" IGN wire ran from the IGN switches IGN terminal that was hot all the time the IGN switch was ON,,,,,,,,,,,,,It wired to the high input side of a Ballast Resistor,,,,,,,,,,The low output other side of the Ballast Resistor wires to the input side of the coil. The coils other low output wires to the points or an elec switch.
An Ignition By Pass circuit that's hot ONLY while the starter is engaged, wires to EITHER the low output side of the ballast resistor or the input to the coil (same place electrically). That circuit may be fed from say an I terminal on a Ford type starter solenoid that's hot ONLY while cranking or an extra side terminal on some mechanical push start switches.
The by pass circuit purpose is to feed unballasted voltage to the coil ONLY while the starter is engaged but otherwise the ign circuit is from the switch to and through the ballast then to the coil.
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