Innovative Products of America 7866 4/5-Way Pin Trailer Circuit Tester Air Tools 0AH battery 48-11-2440

0AH battery 48-11-2440

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Innovative Products of America 7866 4/5-Way Pin Trailer Circuit Tester Air Tools 0AH battery 48-11-2440Plugs into the trailer plug Each LED light corresponds to the circuit being energized Provides an easy to connect ground terminal for trailer lighting set upTests both 4 and 5 pin vehicle side connections for faulty wiring. LEDs light up to corresponding circuit. If LED does not light up, the circuit is not receiving power. Double sided unit allows the user to plug in line with the trailer, leave plugged in while on the road. Made of hard ABS plastic