An automotive multimeter is a handy tool used by car mechanics and do-it-yourself (DIY) car owners to troubleshoot electrical problems. They’re able to measure the voltage of alternating current and direct current, as well as resistance, continuity and more. A meter’s display screen shows its measurements, and it may have buttons or a dial for selecting functions, which vary depending on model. An automotive multimeter will also have input jacks for connecting test leads.
While any basic multimeter can be used to do car repairs, the best automotive multimeters have additional features geared towards cars and their electrical components. For example, most of the models in this article include a continuity function that allows you to verify whether or not wires are connected. A higher-end model will also be able to tell you the difference between pure AC waveforms and distorted ones, which is useful for diagnosing electrical problems.
Our top pick, the Fluke 115, is an excellent choice that includes most of the standard multimeter functionality you’d expect. It has a high level of accuracy and is durable enough to withstand a drop or two. It’s also capable of measuring the millisecond pulse width of fuel injectors, which can help you determine why your engine isn’t running properly.
Another great option is the Innova 3340. It’s designed to test alternator diodes, solenoids, breaker points, wiring and switches, and is easy to use for users of all skill levels. It also offers auto-ranging and overload protection, which is a good way to protect the instrument from damage.
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