Tuesday, November 3, 2009
Muiltimeters Or Test Lights? Does It Matter?
I've been in a lot of car audio shops that use test lights, and not as many who use digital multimeters. It is really a "better" than others to find sources of energy? Of course! A test light looks like a screwdriver with the tip, and consist of a small focus and a grounding wire or cable. It works by grounding the bulb, and once it comes into contact with a power source, the circuit is complete and the bulb. This is the easiest way to test the power, because the light or lights of power or not, if their is no any power. The problem with using such tests on vehicles today is the complexity of some of the circuits inside the dashboard. When you finish the test light wire loop in a "hot", is essentially create a small "arc" of electricity that can short some of the most sensitive equipment, like an air bag sensor or relay. I've actually seen a picture of the installation of air bags as a cable test BMW M3 with a test light. In most cases, will not cause harm, but when it does, the cost may be high. We recommend using a digital multimeter to test circuits. They are not very accurate and can say a lot of useful information such as voltage, amps and ohms, all of which are crucial to whether the construction of a good sound system. These multimeters work a little "different from a rule in the light of the test. They usually have a battery onboard to power the meter, not to draw power from the energy source, reducing the tendency to" bow "of the energy source. They are generally safer for use on sensitive systems than their counterparts on the basis of the evidence for this. Digital multimeters are a great tool for vehicle audio installers, since they can help track problems in the system. Also a must have during the installation of any other 12 volt car accessories. A light goes on trial under power, but I will not say if you are receiving the correct voltage and amps. Using a multimeter You can begin to take readings of the components, shape and work backwards to find the component that is not working properly. Multimeters range from $ 10.00 to over $ 100.00, and depending on the level of work and how they should be accurate, you can find one that works for you. I am a great investment and will save many headaches when troubleshooting a system.