I have the same part. They are two common ballast resistors. My guess: one for the original Motorcraft coil (which used approx. 6V - other Fords of the era have a resistance wire which knocks the voltage down on its way to the coil) and one for the Ford "fix" for high temperature readings. The TSBs instructed Ford techs to install a resistor in the water temp gauge wire to lower the gauge reading and thus provide peace of mind to drivers who thought their cars were overheating. Great fix huh?
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