Seller notes

About this item -Designed to test your wiring harness by simply plugging the tester inline between your tow vehicle and trailer, turn on your lights and check the easy to read LED indicator lights. -Pin point and trace the problem if it's on the tow vehicle or the trailer being towed -Durable molded plug construction will work in different weather condition and provide many years of service -Simple plug and read design to allow you to effective test your trailer lights, isolate the problem and s...

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