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This Meagkka circuit probe is a lifesaver for diagnosing car electrical issues.
It works on 6 to 24 volt DC systems – so cars, trucks, motorcycles, even some boats.
Helps you check switches, relays, diodes, fuses, and circuits in no time.

LED indicators tell you polarity instantly: red for positive, green for negative.

The probe can also activate components – flip the rocker switch to send positive or negative battery current to the tip, which lets you test things like fuel injectors, solenoids, or lights without jumping wires.

Comes with a 4-meter extension cable – long enough to reach from the front to the back of a truck or SUV.
That means you can test tail lights, trailer connections, or rear sensors without moving your clamp setup.
Easy hookup: red clamp to battery positive, black to negative.
Then you're ready to start testing.



4.6 out of 5