Ballast resistors are only used on the 56 (and later) twelve volt system. The resistor drops six volts so a six volt coil can be used on a twelve volt car. So in the 55, wire the coil direct to the ignition switch on the six volt car. If you want a really hot spark, and shorter point life, you can apply twelve volts directly to the coil without the resistor. Also, some aftermarket coils had the ballast built in. The coil will say 12-Volts. Richard At 9:18 AM -0400 8/18/98, JAMES T. BENNETT wrote: >Is the ballast resister the same for the 1955 Imperial (6-volt system) as >it is for the 1956 Imperial (12-volt system)? > >Thanks for any help that you can provide. > >Jim
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