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How to Test Fuses Without a Tester
Model: (Various brands) Various
When an electrical component malfunctions, the first check to make is the fuses. To verify the functionality of this component, a tester is usually used, selecting "Ohm" as the unit of measurement and placing the probes on the contacts. If there is continuity and therefore efficiency of the fuse, you will hear a confirming beep. However, if you do not have a tester available, you can alternatively use a 9V battery and a bulb. Connect the negative terminal of the battery to the negative terminal of the bulb and use the two positive terminals as probes, placing them on the contacts of the fuse to be checked. If the bulb lights up, the fuse is functional; otherwise, you need to replace it.
Updated on 14 July 2026 by ScegliAuto
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