Innovative Products of America 7866 4/5-Way Pin Trailer Circuit Tester
January 13, 2014 - Comment
Tests 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 –
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