OTC Parasitic Draw Test Switch - 7645
Takes the guesswork out of electrical problems causing the battery to drain
- Attach the test switch between the negative battery cable and the battery, and then road test
- 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.
- Suggested Products
- Similar Products
- People Who Bought This Also Bought