Connect the probe to the vehicle battery's 'Positive Terminal' or auxiliary power outlet. The supply voltage will be displayed on the 'LCD Display,' the 'Red LED' will light, and the device will emit a high-pitched beep.
Step 2 - Performing a Ground Check.
Connect the probe to the 'Negative Terminal' of the vehicle's battery or auxiliary power outlet. The 'LCD Display' will display zero voltage, the 'Green LED' will illuminate, and the device will emit a low pitch beep.
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