MSD Universal Digital Ignition Tester for Single and Coil-per-Cylinder Systems 89981

Diagnosing ignition system faults quickly separates efficient shop time from costly downtime. The MSD Universal Digital Ignition Tester 89981 gives you the precision to isolate problems across virtually any MSD CD or DIS configuration—whether you're running a carbureted single-coil setup or a modern coil-per-cylinder system. With support for 10 different crank types and multiple trigger inputs, this tool covers the full spectrum of racing and street applications without requiring multiple testers.

The backlit display and intuitive single-knob design mean you'll spend less time fumbling through menus and more time validating spark delivery. The integrated spark plug tester and cam sync output eliminate guesswork when troubleshooting DIS/EFI systems, making this an essential diagnostic instrument for any shop that works with MSD ignition technology.

• Tests MSD CD and DIS systems
• Single-coil and coil-per-cylinder compatible
• Backlit, easy-to-read display
• 10 crank type settings
• Supports 1-cyl, 4-cyl, 6-cyl configurations
• Supports 6-cyl odd-fire, 8-cyl, 12-cyl
• 24x, 58x, 12-1, 36-1 wheel support
• Electronic trigger input compatible
• Points trigger input compatible
• Magnetic trigger input compatible
• Cam sync output included
• DIS/EFI system testing
• Spark plug tester included
• Engine speed sweep test mode
• Battery voltage display
• Adjustable dwell/duty-cycle output
• Single knob controls functions
• Compact, portable design
• Power Grid adapter harness included
• Easy hookup configuration