SG Tool Aid 23920 In-Line Ignition Spark Checker with 90 Degree Boot

Features:Features a 90 boot and longer wire to easily install and remove the In-Line Spark Checker between the spark plug and the ignition wire. Use to quickly troubleshoot ignition system with “hands-free” operation. Technician can visually check condition of ignition system at each cylinder. Frequency and intensity of flash indicates whether there is an ignition system problem or a fault in the fuel delivery system.