7-Way RV Blade Trailer Light Wiring Circuit Tester Round Adapter Pin Plug po

300x Assorted Loose Bicycle Bearing Balls 1/8" 3/8" 5/16" 5/32" 1/2" etc. 12V:Auxiliary(12V+)(Tester should stay lit at a constant). 7 WAY TESTER. TM: Taillights(Turn on running lights.Tester should stay lit at a constant).

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