LED lights indicate that each circuit is complete and current is getting to the plug.
Harness checkers easily trace each lighting function to the truck side terminal.
Trailer testers will easily test trailer plug circuitry on most fleet vehicles.
Plug the tester into the trailer plug socket and activate the lights, brakes and turn signals; this will identify if the failure is in the truck, cable or trailer.
Quickly and accurately test vehicle Systems.
Weather-proof.
Winged grip for easy removal from truck connector.
If vehicle is not properly wired, the corresponding LED will not light up.
Helps identify wiring problems on both truck and trailer.
WARNING: This product can expose you to chemicals including Lead which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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