OTC 6589 Electronic Ignition Spark Tester
- Simple, high quality tool designed to test high energy electronic ignition (HEI) systems.
- Simply attach plug wire to end then use built in clip to attach to ground.
- Tester will give you true spark performance results, helping you identify ignition anomalies that simply removing a plug and grounding it won't reveal.
- For use on vehicles and power equipment equipped with a high energy ignition system.