7 Round Spade plug tester SKU369

EL15785 Round 7 Spade plug tester This 7 Round Spade plug tester is ideal for testing the running lights, stop, turn, power wire, brakes on your tow-vehicle. This is a good item to have when you are on the road and having wiring troubles. This item allows to determine if the problem is in the trailer or the tow vehicle. See pictures below.