Description
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 save your valuable time and money
Compact design allows you to store in your tool box, glove compartment or anywhere to be ready when you need it
BU – backup, BK – electric brakes, 12v – Auxiliary, LT – left turn/brake, TM – Tailights, RT – Right turn/brake
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