Seller notes

Why You Need the 12V Spark Plug Tester Dual Hole Diagnostic Tool Gasoline Car Ignition Analyzer？ Power Connection:The tester connects directly to the car battery using battery clamps, typically operating at 12V. This allows the device to function without needing an external power outlet. Signal Reception: Once connected to the spark plug, the tester receives signals from the ignition system, which are generated by the ignition coil. Ignition Testing:The tester simulates the ignition process, c...

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