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PT78937 FLAT(SPADE) PIN TRAILER CIRCUIT TESTER
PT7893 7 FLAT(SPADE) PIN TRAILER CIRCUIT TESTER - Features & Benefits
- Easily test trailer plug circuitry on most new light trucks, SUV's and RV's.
- Just plug the plug tester into the trailer plug socket and activate the lights, brakes, turn signal etc.
- Watch the LED light indicating that each circuit is complete and current is getting to the plug.