Vehicle example: PTO on Freightliner MT114

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Step 1: PTO signal Wire location

  • Locate the PTO
    • Under truck on drivers side in this example.
    • This is an Eaton brand PTO
  • Locate the pressure switch as seen here.
    • It has a single wire and the connector has a boot on it.
    • This wire will test as a (-) Ground when the PTO is turned on.
      Use a weather-proof splice!

Step 2 Optional location

  • This wire can also be located on top of the transmission.
  • It is in its own loom with no other wires.
  • It can be accessed from inside the cab by removing the access panel in the center of the cab.
    Use a weather-proof splice!

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