[JSeery]

Here are some Ford number I copied down from somewhere. So many cars used them they should be available. Might check online.

There are three possible resistor wires used in FoMoCo vehicles in the 1970's.
COLF-12250-A .. Resistor Wire-Ignition Coil (Motorcraft DY-37).

61.49" long / Color coded PINK / 1.30-1.40 ohms resistance / #20 gauge wire.
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D1AZ-12250-A .. Resistor Wire-Ignition Coil (Motorcraft DY-84-Y).

60" long / Color coded RED with GREEN stripes / 1.30-1.40 ohms resistance / #16 gauge wire.
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D7AZ-12250-A .. Resistor Wire-Ignition Coil (Motorcraft DY-213).

49" long / Color coded RED / 1.30-1.40 ohms resistance / #16 gauge wire.