Home Towing & Transportation Trailering Trailer Wiring EZ Troubleshooter 4-Way Circuit Tester Seasense EZ Troubleshooter 4-Way Circuit Tester $7.99 EZ Troubleshooter 4-Way Circuit Tester quantity Add to cart Product Details Product Details Plug tester into vehicle’s 4-way flat towing plug. Test vehicle’s turn signals, tail lights and brake lights. When power is present, the indicator circuit’s green light will glow. Waterproof PVC material.
