Using a Digital Multimeter for Car Repair

digital multimeter auto specsIf your car repair involves any electrical systems, then you need to have a digital multimeter. And with today’s high-tech vehicles, it’s pretty much impossible to work on any part of the car without running into a sensor or electrical circuit of some kind. There are several brands of digital multimeters that are specifically designed for automotive repair work. At the very least, your chosen multimeter should provide the basic functions needed by auto mechanics.

When shopping for a digital multimeter, make sure you focus on brands that are designed to be used when repairing cars. These units will be more rugged and stand up to the abuse and occasional accidents that are part of automotive service. They will also have specific dials and buttons that will make your repair work go more easily. Digital multimeters built for auto service are usually more easy to read-you never can predict whether you will be using it by the roadside at night or in full sunlight in your driveway.

The most basic features that a mechanic requires in a digital multimeter is the ability to measure voltage, current and resistance. Knowing the values of these three things make it possible to diagnose almost any electrical problem. For example, measuring the resistance of your spark plug wires is a common way to determine whether they need replacing or not.

An example of an excellent auto service digital multimeter is the Fluke 77-4. It has a large, easy-to-read display (which is backlit for low light work) and is compatible with the latest safety standards. Voltage ranges can be determined automatically or set manually. The meter is accurate to with 0.3% and has a lifetime warranty.

Don’t make the mistake of working on your vehicle without having a digital multimeter on hand. You can find excellent models ranging from $30 and up.

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