Sounds like the valve body has been converted and the one wire is for the TCC control. I would pull the pan and see if the wire goes to the TCC solenoid located in the front pump and held on with two bolts.
Wanted Good Woman:
Must be able to cook , clean , sew , tune engines and polish trucks. Must have old Stovebolt and garage. Please send picture of old Stovebolt and garage.
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