6V & 12V Circuit and Spark Plug Tester: H

2649 Circuit and Spark Plug Tester Checks 6 and 12 volt circuits for voltage and checks spark plug for spark. Place probe on end with regular bulb to check low voltage. Checks head lights, tail lights, turn signals and other circuits. Tests for faulty sockets, connections and broken wires. Place probe in end with neon bulb to check for spark voltage. 36" cable. Shock proof case.