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Trailer tester Mutt box, tests 7 pin and 4 pin trailers and others... (Oviedo)
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With this box you can test your trailers without having to hook up the truck. Has controls for brakes, running lights, turn signals, brake lights, reverse lights, and electric brakes.
It is ready to be powered by either a Milwaukee 18V or a DeWalt 20 volt battery but can easily be reconfigured for other battery types.
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