How To Check The Electrics With A Multimeter

In general, it is very important to test if all electrics in your car can work properly to ensure that you can have the safest and smoothest ride. There are various tests you can perform on your car’s electrics including physical checking and automotive testing. For automotive testing work, you may look for the best digital multimeter. There are various kinds of multimeters available on the market which you can easily buy ranging from the simple one to one with multiple functions.

However, when you first buy a multimeter, you might not know how it works as well as how to use it to check the clectrics in your car.

Though the process is simple, you need to follow it very strictly to ensure that you can measure your device correctly.

In this article, I will provide you the guide on how to check the electrics with a multimeter.

So what is a multimeter?

The old traditional method of checking if an electric is working properly or not is by using a simple test lamp. However, if the lamp lights on, it only means that this electric has power. It does not means that it can function strong enough.

Therefore, a multimeter is invented to accurately measure the voltage as well as the resistance of the circuit of this electric device. In some complex multimete, they even offer the ability to read engine speed and dwell angle.

How To Use A Multimeter To Check The Electrics

How To Use A Multimeter To Check The ElectricsThe first thing you need to do is always set the meter to 0 before each test. This step is very important, especially when the resistance is low so that you can measure it more correctly.

If you want to measure the voltage of an electric, set the meter to volts. And if you want to read resistance level, set the meter to ohms.

You should connect two post of the tested device to the multimeter. You need to ensure that you are able to connect the meter leads to the correct posts.

It is also very important that you can connect the correct lead to the specific terminal of the device.  It will all depend on the polarity of your car.

  • If your car has a negative earth system, it means that you have to connect the lead to the post which is marked with a negative sign.
  • On the other hand, if your car has a positive earth system, it means that you have to connect the lead to the posts which is marked with a positive or a plus (+) sign.

So it is very important to know about your car’s polarity. If you don’t know about this, you can ask for your salesman. Or you can also look for this information on your car’ manual handbook.

When you connect the lead to the appropriate pole, make sure that it is tight and makes a good contact

How To Read A Multimeter

Before you read a multimeter, make sure that you set the meter to the correct volts or amps.

Tips: If the number of the multimeter is not stable and flashing, you should check if the leach is connected securely or not. Also make sure there is no rust or pain at the contact point of the lead and the pole.

If the problem persists, you have to clean the lead with a damp cloth.

When the multimeter shows you a specific number, you should use this number to compare with a range to make sure that your device is working properly.

For example, if you are measuring the battery and the number comes out as 11 volts. It means that your battery is not at low charge. If the number is slight obver12 volts, it means that your battery is at full charge.

There are also many ways you could read and use the multimeter for different tests You could refer your car’s manual book for more information.

How To Read A MultimeterHere are some of the most basic things that you need to know about using a multimeter to measure the voltage, the resistance as well as other statistics of the electrical devices on your car. By doing so, you are able to make sure whether your car is running properly, hence ensuring a safe and smooth trip.

After all, it is not difficult to use a multimeter. The most important thing is to know your car polarity so you can connect the lead to the post correctly. You also need to make sure you can read the number from the multimeter as well.

If you are still unsure, you can add for advice from car experts as well as consulting many clips from the Internet.

I hope that with my tips, you would be able to use the multimeter efficiently and effectively.

Jose A. Brown is an expert in mechanic equipment services who is the founder of He also likes to sharing tip trick and writes many interesting article and blog, helping people in understanding his field of work. He always writes the best article helping people to know how to buy and use the right tool for their works.