AMPRO T71240 High Energy Ignition Spark Tester

Neat tool but there needs to be a warning attached. Warning: When using on a vehicle that uses a lost or waste spark ignition, do NOT remove more than one spark plug wire at a time, and do NOT open gap wider than what the ignition is able to arch across. Failure to do so will destroy your ignition control module. Hi voltage will seek ground and if it does not find it across the tool or spark plug, it will go backwards through the coil and through the ignition control module. I learned the hard way with that $200.00 mistake. Just be aware of what you are doing, and be careful in how you hook it up. As long as you do that, the tool is awesome. I am very pleased with it, and works beautifully. Highly recommend adding it to your toolbox.