The fuel tank sending unit in an '86 Ford Ranger typically includes a few key wires: a ground wire, a signal wire that sends fuel level information to the gauge, and sometimes a power wire for the fuel pump (if applicable). The ground wire is usually black, the signal wire is often light green or gray, and the power wire can vary by model. For an accurate wire diagram, it is recommended to refer to the vehicle's service manual or a dedicated wiring diagram resource specific to the 1986 Ford Ranger.
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