MSD 89981 Ignition Tester, Universal

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Backlit, large and easy to read display Electronic/ points, and magnetic trigger inputs Engine speed sweep test mode Battery voltage display Single knob controls all functions Test ing your ignition system has never been easier or more precise. Test both single channel and coil per cylinder ignitions. As engine technology changes so does the need for ignition systems and a way to test them. MSD ignition tester now has the ability to test not only traditional single coil ignition systems but also coil-per-cylinder applications. The 89981 tester even gives you the ability to create an RPM run and let the tester run through the RPM range. This allows you to see the ignition activate any accessories you may be running such as Shifters, nitrous solenoids and more. Show more