7- and 4-Way Circuit Tester
December 29th, 2008 - Posted in Tools & Equipment
Tests power supply from tow vehicle to trailer. Tests both 7-way round and 4-way flat tow plugs. Simply plug into vehicle’s tow plug and operate lights, brakes and turn signals to test circuits. Speeds trouble shooting time and shows if vehicle is properly wired. This is a tester only.
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