![]() If not, then there may be a problem with the voltage regulator or battery. If the voltages are between 11 and 12 volts, then the circuit is functioning properly. The multimeter will display the voltage between those two points. To do this, set the multimeter to the "voltage" setting and touch the probes to the two points in the circuit that you want to test. You can test for voltage with a multimeter. Voltage is the difference in electrical potential between two points in a circuit. ![]() Voltage is another important parameter that you'll need to test for when troubleshooting car wiring problems. If the test light lights up, then there is continuity. To do this, touch one end of the test light to one point in the circuit and the other end to the other point. You can also test for continuity with a test light. If the multimeter beeps or lights up, then there is continuity. To test for continuity with a multimeter, set the multimeter to the "continuity" setting and touch the probes to the two points in the circuit that you want to test. I prefer using a multimeter because it's more accurate, but a test light will work in a pinch. You can test for continuity with a multimeter or a test light. In other words, continuity is what allows current to flow freely through a circuit. A circuit is said to have continuity if it has a low resistance path between two points. Once you've found the test points, you're ready to start testing!Ĭontinuity is an important function that you'll need to test for when troubleshooting car wiring problems. This method is a bit time-consuming, but it's worth it if you don't have a wiring diagram. For example, if you want to test the headlight circuit, you can follow the wire from the headlight switch to the headlight bulb. All you have to do is to locate the fuse box in your car and start testing from there.Īnother way to find the test points is to follow the wire from the component that you want to test. If you don't have any wiring diagram, you can start testing from the fuse box. Wiring diagrams will help you a lot to find the test points. But now you have to decide from where to start. Now you have the right gear to start your testing. Where to find the test points in car wiring? You can visit my list for 8 best multimeters for Automotive use. If you don't know which multimeter is best for you then don't worry. These tools will help you to easily check the voltage, current, and resistance in any automotive circuit.
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