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Troubleshooting Voltage at 4 Pin Flat Trailer Connector

Question:

Im only getting 8 volts at rear of truck f150.is this normal? There is 12 volts at battery.

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Expert Reply:

You should be getting 12 volts from each function when that function is active. The amperage will be less and can vary between functions. You can use a multimeter like # PT89ZR to check this.

If you have a specific part number you want me to check into for the amperages let me know as these are year/make/model specific and can even vary slightly between brands.

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