Original 6 volt system didn't use a resistor, was added when converted to 12 volt. Should also have a by pass circuit to supply full system voltage to points while cranking, assuming it still has points.


BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022