A circuit tester that plugs into the 5-way trailer connector on the vehicle. The lights let you know what functions (brake, turn, tail, reverse, and stop) are working properly and what functions aren't. Inline circuit tester allows you to plug the trailer connector in on the other side.
20115 Tow Ready 5-Flat Circuit Tester
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Average Customer Rating: 
5.0 out of 5 stars (1 Customer Reviews)
by: Leon J.05/10/2011
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Products arrived promptly and the install went smoothly. The hard part was getting access to the area in my Highlander where the wire had to be routed. Everything else went like clockwork. The instructional video was a great help. Thanks!!!13283
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