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7-Way Trailer Wiring Tester Recommendation  

Question:

So will this work unwired to just plug in and check tow vehicle ?

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Expert Reply:

If you were looking for a 7-way tester that's a standalone tester and does not need to wire to a trailer you'd want the 7-Way tester part # C73NR which plugs into a 7-way socket and will let you know which circuits are active. See attached review video.

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Jameson C

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