The quick tester works by receiving a signal from the secondary ignition coil. This may be caused by one of the following 1 x COP Ignition System Quick Tester ADD 750. battery not include in the parcel.
InLine Spark Tester for Coil On Plug Wires - Universal Fit, Easy to Use Tool
HT25COP Ignition Waveform Probe for Coil-on-Plug Engines, Works w/ Oscilloscope
In-Line Spark Tester for Coil-On-Plug Wires, Universal Fit, Engine Diagnostic To
Spark Plug Tester, Adjustable Ignition System Coil Tester, Coil-on Plug Ignit...
