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Product Description: Battery Doctor Circuit & Spark Plug Tester High quality tester instantly locates wiring problems such as bad connections, faulty or broken wires and sockets in 12 - 24 volt systems. A light will shine if the batteryÂ’s condition is sound. No light will be visible if there is a short circuit or the battery is low. Includes alligator ground clip and 3" metal probe with cover. ALT Part Numbers: WRC 21049, 39-1446
Product Description: Battery Doctor Circuit & Spark Plug Tester High quality tester instantly locates wiring problems such as bad connections, faulty or broken wires and sockets in 12 - 24 volt systems. A light will shine if the batteryÂ’s condition is sound. No light will be visible if there is a short circuit or the battery is low. Includes alligator ground clip and 3" metal probe with cover. ALT Part Numbers: WRC 21049, 39-1446