Description
The Hopkins 50928 Trail’R Test’R Tow Doctor is a portable diagnostic tool designed to simplify troubleshooting of trailer wiring systems. Compatible with common 4-flat trailer connectors, it helps verify proper operation of turn signals, brake lights, tail lights, and ground circuits. || The handheld design allows users to quickly isolate wiring faults on either the tow vehicle or trailer side of the connection. By identifying circuit problems before towing, the tester helps reduce downtime and improves confidence in trailer lighting performance. || Suitable for utility trailers, boat trailers, recreational towing, and maintenance shops, the Trail’R Test’R provides a practical solution for diagnosing common trailer electrical issues.

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