Re: 1956 Clipper Hot Rod

Posted by BigKev On 2009/10/17 13:27:52

The forth terminal bypasses the ballast resistor and supplies 12v to the coil during for easier starting, and then shuts off after you lay off the starter. Once started the coil is running on basically 6 volts from the ballast resistor output to prevent the points from getting burned up during normal operation. That is why the 6volt cars don't have a ballast resistor.