Tester plugs into tow vehicle and LED illuminates to show if connectors are correct and working. Check turn signals, tail and brake lights on your trailer.

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Product Review

Tester plugs into tow vehicle and LED illuminates to show if connectors are correct and working. Check turn signals, tail and brake lights on your trailer.

  • Reliably identifies which circuits in trailer’s electrical wiring are having issues
  • Inline tester
  • Plugs into wiring harness and indicator light illuminated if a circuit is faulty
  • Can help identify issues with the taillights and ground
  • Also identifies issues with left and right turn signals

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