The more elaborate your car’s audio system is, the more wires you’ll find, but the principles behind the system stay the same. This amplifier can be very fancy in custom systems and buried anywhere in the car, but most standard cars have the amplifier attached to the radio head unit (the thing that has the buttons you push).Īside from the incoming power cable, the amplifier runs a phono/RCA cable to the radio head unit (integrated in a basic model), a ground cable away from the system, and speaker wires to each speaker. In the simplest systems, the car battery runs power to the amplifier. Set-up of an audio systemīut first, we should familiarize ourselves with the basic set-up of an audio system. If you are looking for new multimeter - look at the Best Automotive Multimeter 2018 review. If you’ve assembled the tape, battery, and multimeter, we can start testing. If you have some around, a piece of tape can save you some work, too. In this blog post, we’ll show you how to test for positive and negative speaker wires using a multimeter.Īside from the multimeter you’ll be using to conduct the test, you also need a battery. This is why it’s so important to test for the right wires. While the speakers will technically still work when you mix up the positive and negative wire, the sound quality will not warrant the price you paid for your upgrade. One of the secrets of putting in new speakers, is that the final audio quality depends a lot on how the speakers are wired. This also makes it one of the most common projects to look at your car’s wiring, even if you’re normally not a car enthusiast. Whether it’s upgrading the whole audio system or just putting in better speakers, upgrading the audio in your car is a very common project. One of the most popular customization projects in cars is putting in better audio equipment.
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