OTC Parasitic Draw Tester.

Open box never been used

Finding Electical Problems that drain the Battery is Getting harder all the time, but using this parasitic Draw tester with your digital Amp Meter Takes the Guesswork out of a Complicated job . Attach the test switch between the negative battery cable and the battery, and the road test the vehicle, next,connect an amp meter to the switch to determine the parasitic amperage Draw, and located and located the excessive electrical Drain on the battery, works on Any Vehicle with side or top post batteries