Handheld ignition tester pen designed to quickly identify vehicle ignition system faults. The transparent body and builtin light bulb provide clear visual indication when testing spark plug wires and voltage coils, making diagnosis faster and easier for technicians and DIYers alike. Why you need this tool Quickly pinpoint ignitionrelated faults without lengthy disassembly. See ignition activity clearly: the light bulb gives immediate visual confirmation. Compact pen shape fits easily in a toolbox or glove compartment for onthespot checks. Key benefits Fast troubleshooting: helps determine whether spark plug wires or the voltage coil are producing ignition output so you can decide the next step. Easy to read: the light bulb produces a bright indicator that is visible through the transparent housing. Portable and convenient: penstyle form factor that's simple to hold and use during inspections. Key attributes Functionality: Diagnostic tester for vehicle ignition systems; designed specifically to indicate electronic faults related to spark plug wires and voltage coils. Indicator: Builtin light bulb provides visible feedback during testing. Compatibility: Suitable for most cars. Material and design: Transparent housing lets you see the indicator and internal components during use. Form factor: Penstyle handheld tool for convenient handling and storage. Typical applications Check spark plug wires: Verify whether individual wires are carrying ignition output as part of routine maintenance or troubleshooting misfires. Test voltage ignition coil output: Determine if the coil is producing a visible ignition signal before replacing ignition modules or coils. Quick roadside or garage checks: Carry the pen for rapid verification when diagnosing intermittent ignition problems or confirming a . How it helps Reduces guesswork during ignition system diagnosis by providing a direct visual indication of ignition activity. Saves time and expense by helping you identify the faulty component (spark plug wire or coil) before ordering parts or performing replacements. Supports both professional mechanics and car owners performing basic diagnostic checks. What to expect A straightforward, visual diagnostic aid for ignition system issues in the majority of passenger vehicles. A compact, transparent pen with an integrated light bulb that makes ignition testing easier to interpret. Notes Intended as a diagnostic indicator for ignition output on spark plug wires and voltage coils. Compatibility is described as suitable for most cars. Follow standard vehicle troubleshooting procedures and safety precautions when working with ignition systems.