Automotive Spark Plug Coil Ignition Tester

FEATURES QUICK DIAGNOSIS OF IGNITION ISSUES - By connecting the tester to the spark plug and ignition coil respectively, you can instantly test the coil ignition system without disassembly. The bright LED indicator quickly identifies weak or faulty coils within seconds, saving you valuable time. NO POWER SOURCE REQUIRED - Operates passively by harvesting energy from the ignition system's electromagnetic field. The maintenance-free design is always ready for use without batteries or charging, making it reliable for roadside emergencies or shop diagnostics.   PREMIUM MATERIALS FOR DURABILITY - This tester features high-voltage resistant wiring, with an internal core made of pure copper wire that withstands the demands of high electrical currents. The high-brightness neon bulb remains cool even after prolonged use and offers a long service life. The spark plug-style metal tip ensures easy connection and is wear-resistant for lasting durability. COMPACT DESIGN FOR EASY USE IN TIGHT SPACE