![HEI IGNITION TESTER](http://hutsiestoolsales.com/cdn/shop/products/GW_2756D_FRNT_MAIN_{width}x.jpg?v=1624429809)
- Accurately check for spark in ignition systems without removing spark plug from engine
- Testers verify that energy is sufficient for spark plug to fire
- Attach spark plug wire to tester end
- Clamp tester to engine as ground
- Crank engine and check for spark
- 80,000 volt systems 18KV