My wiper motor has a ballast. You can't see my Ignition Ballast but it's behind my air cleaner next to my heater hoses on cowl. Maybe this diagram can help. It is a conversion diagram.
Thanks. My bad. Those wiper low speed resistors do look the same, but I think the resistance is much higher than the ignition resistor.
1974 resistors were here. Earlier points ones were under the pinch weld/drip gutter.
That has both the 5 ohm and the 1/2 resistor.
With a replacement ECU, only the 1/2 ohm resistor is needed.