Trailer Wiring Tester
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4-POLE CONNECTORS WITH CIRCUIT TESTERS Plugs into and upgrades vehicle's existing 4-pole tow plug Detects faulty wiring and incorrect connections Ensures that the vehicle's towing circuit is working properly LEDs instantly let you know whether power is reaching the trailer Saves time finding the source of trailer light problems. Eliminates guesswork, troubleshooting — you'll KNOW which of the circuits are and which are not working. Plugs in between the tow vehicle's plug and the trailer's plug. $8.99
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PLUG 7-WAY AND 4-WAY CIRCUIT TESTERS Shows if vehicle's tow circuit is properly configured One end of tester tests 7-way plug, the other end tests 4-way flat plug Indicates if 12-volt power from tow vehicle is reaching trailer's tow plug Makes troubleshooting tow vehicles easy! Simply plug tester into tow vehicle's towing plug and operate vehicle's turn signals, lights and brakes. Glowing green LED indicates circuit is good. Also pinpoints where the problem exists (left or right brake light or turn signal, tail/marker lights, power to trailer, electric brakes, back-up or auxiliary lights). Brake-resistant plastic. $24.99
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