Product Description
OTC 7645 Parasitic Draw Test Switch - Find electrical problems that drain the battery using No. 7645 with your digital amp meter. Attach the test switch between the negative battery cable and the battery, and then road-test the vehicle. Next, connect an amp meter to the switch to determine the parasitic amperage draw, and locate the excessive electrical drain on the battery. Works on any vehicle with side- or top-post batteries.Product Videos
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parasitic test switch
tester is simple to use
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Draw Test Switch
works well and works quick
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Parasitic Draw Tester
This parasitic draw tester is one of the greatest testers that I have ever owned. Finding the issue when using this is never a long struggle and it is always correct. I have before had testers that have given us the wrong diagnosis and for this one to be so great is such a relief. The price really is not a bad one to pay considering how great it is.