OTC BATTERY DRAIN TESTER SWITCH

Features and Benefits:

• Finds electrical problems that drain the battery
• Digital amp meter takes the guesswork out of a complicated job
• Works on any vehicle with side or top post batteries

 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.