OTC 3589 Ignition System Quick Test Kit Enables technicians to do power-balance tests and diagnose problems on standard electronic or distributor less ignition systems Comes with brass adapters to fit all auto coils test probes and leads spark gap tester and step-by-step instructions that lead technicians through the power-balance test Performs power-balance in less than 5 minutes on standard electronic or distributor less ignition systems Spark gap tester checks for adequate kV voltages on electronic ignition systems providing instant diagnosis of problems-whether a faulty coil ignition wire or spark plug Ideal for checking spark in no-start condition instead of wasting time trying to ground out your screwdriver