1 How to Test Car Speakers? Step 1 How to Test Speakers and Wires Speaker Testing Option 1: Connect a 9 Volt battery to the leads of the speaker, positive lead to positive battery end and negative lead to negative battery end. You must connect speakers to the correct inputs. Your first step is to disconnect the speakers. A hydrometer is an inexpensive tool. Now when i turn my headlights on it dims the panel inside the car but when i turn the headlights on the panel goes bsck bright. At this point you’re ready to start the car with the charged battery. It is obvious that the alternator is a critical part of a modern vehicle’s electrical and charging system. Disconnect the negative terminal, which is labeled with a minus sign, before disconnecting the positive terminal to keep it from short-circuiting. If your multimeter is not autoranging, set it to 20V DC. Read the measurement. Car stereo drains car battery, it is recommended that you keep your car battery fully charged. Connect the self-powered test light or ohmmeter ground clip to a good ground and probe any easy-to-reach point in the circuit. Without that initial jolt, your car might as well be a multi-ton paperweight. Electric devices like timed and dimming dome lights can stay “awake” and produce excessive drain on the battery … It represents a routine operation, especially if you have all the tools at hand. However, having the right tools can save you lots of hassle, as well as time and money. It will also teach you how to fix it if the problem is the cigarette lighter, now more commonly known as the 12 volt plug. I had a dead battery rwo days ago and so had a new one put in. Turn off the ignition and any accessories like lights or the radio in the vehicle. To tell if the speaker is blown or not without taking it apart is really easy. If you're bored and want a project, or you're like me and just like making things instead of going out and buying purpose built ones, this is for you. Place the red lead on the positive battery terminal (indicated by a red cover or a + symbol). Another way to test if the speakers are working is to inspect. To wire a car stereo, start by disconnecting your car battery to avoid electrocuting yourself. Galant, with the car off the stereo doesn’t do anything. Reason 1: Lights . Isolate the circuit from power and ground. If your car requires an output converter, connect this as well so your radio will work with your car. Get them to plug in another radio and see if that works OK, or alternatively plug your radio into another car. Use a multimeter to test the speaker. Disconnect battery positive, set the positive probe on the load side of the fuse, clamp the negative probe to battery negative. Finding out how to test a car amplifier with a multimeter may sound like a sophisticated task. After that you have to connect the amp. 1.1 Step 1: Removal from the enclosure: 1.2 Step2:? If this is the case, simply follow the below advice and you will be able to fit your battery without losing the car's memory. If your car doesn’t use any amps in the system (check your repair manual to find out), you can move on to the speaker testing step in stereo troubleshooting. What would cause it to be a problem all of a sudden? NOTE: Never use a self-powered test light to perform checks for opens or shorts when power is applied to the circuit under test. A week before my car had no power at all, I was driving and my stereo completely shut off while I was driving. Related Post: Best Car Battery Chargers. After removing the speaker from the speaker box, connect the speaker wires to the 9-volt battery and see if the speaker cone moves. If you want to use a car battery for a temporary arrangement, the battery will serve as its own power source. The purpose for those fuses and circuit breakers is to protect electrical circuits from short to grounds. There are specific exceptions, where it’s possible to start a car without a battery, and some small engines don’t use batteries at all, but the fact is that when your car battery dies, you’re going nowhere fast. There ya go bench test a car stereo without a car. The test light can be damaged by outside power. to 12V DC, which is probably a car battery ( and get + to + and - to - ) I tested the wiring harness and every connection showed a resistance of .04ohms which is great, so I know my harness is wired correctly. To test an exact point use a large gauge wire connected to the negative on the battery 5ft and clip the other terminal to your desired ground point (clean/ paint removed). Buy one at your local auto parts store or online, and then check this article on troubleshooting a car battery … To remove your car stereo, you will first need to disconnect your battery’s ground wire. I hit a pot hole a couple days ago and my car stereo shut off. You can connect directly to the battery, provided that you place a fuse on the wire near the battery terminal. The question that has been frequently asked from us is that if the stereo system can also affect the health of our battery or damage it. all you need to do is get a 12v source of modest current (battery or battery charger etc or lab supply) and connect the chassis or earth wire of the radio to the negative (-) and the main battery wire and the acc. If it does, that indicates a problem with the connection rather than a blown speaker. Get a 9 volt battery and a wire and place one battery pole on the correct place where the wires were soldered. Step 3: Check the speaker with a multimeter. This is just going to be a short instructable because of its simplicity. Now, divide and conquer. Grab a 12 volt power supply capable of supplying about 10 amps. It's a simple JVC unit that I put in a couple years back so I can use my iPod while driving. At the time I just kind of scratched my head but now I wonder if the stereo was dragging it down then too. If a pulse is generated in the speaker then the speaker is still functioning properly. The multimeter, set to measure continuity, can be used in a similar way. This only works with the speakers that have the positive and negative wires that hook into a stereo. Inspecting means you will use your naked eye to try to find out if they are working. Also, it's not a bad idea to connect a large gauge under the car between the body and frame. Small wires at the battery are vulnerable to corrosion, and there's almost always an easier way to get a constant power connection, even if you can't get the original power wire to work. If it's not the radio, at least a specialist should be in a better position to suggest an answer. Your car's electrical system is massive and complicated. Trying to find a short in the system might sound like a job for a professional, but in this video you will learn how you can use an $8 test light to locate a shorts in your car's electrical system. Personally, I'd bite the bullet and go to a car stereo specialist. Ive had the new battery checked and the slternstir and they both read good. Test the battery voltage. Then, match the colored wires of your radio and your car and twist the wires together. All you really need is to convert the DC power from your vehicle into AC, which is the kind that comes from your wall. Watch to see if the cone moves. Why Test Your Alternator. If you manage to screw… The previous battery only lasted three years. There are, however, a few key elements to take in consideration before you even start. So my question is. Im a senior citizen livibg off social security. wire together and to the positive (+) terminal. i used to use one as my workshop radio. To change a car battery, pop the hood of your car and locate the battery, which will be kept on either side of the car’s frame. You could but, cars come equipped with fuses and circuit breakers just like your home. All you have to do is take a 9 volt battery and touch it to the wires. After waiting, go ahead and try to start the car with the previously dead battery. yes of course. Could a car stereo drain a battery and how? Now that we have verified that the battery is experiencing a parasitic draw, we can move to exploring the different reasons and parts that can be pulling on your car’s battery. Because car stereo systems work with direct current (DC), they can be powered directly by a car battery. Let it run for 5-10 minutes. Changing your car battery. If there is a short circuit, the test light will illuminate or the multimeter will beep. I also didn’t add an amplifier when I put the stereo in. You may have already seen our video on how to change a car battery (a worthwhile watch before attempting to fit your battery) and noted that you need a radio code for your vehicle. Car Stereo to Home Stereo With a PSU: I'm going to show you how to run a car stereo using an old PC power supply. Additional test: There is one more thing that you can do to check it, if you don’t have a multimeter lying around. Ok i ran across this. Connect the wire by placing it on the battery and on the free pole on the amp. The stereo was installed about 2 years ago and it just started showing problems a couple months ago. Remove the cover from the speaker, and connect the wires to the battery again. First, disconnect your battery and shut off the infotainment system to avoid accidental shocks. Car battery Whether you want to rock on the go or just want to play outdoors for a while, running a guitar amplifier off of a car battery isn’t difficult or too expensive. It is dangerous to work on electrical components of a vehicle with this connected. It recharges the battery of your car to keep it working. I don't advise it, though. This is the black wire connected to the battery under the hood of your car. The alternator also powers up the car’s electrical system during operation. Here, however, you will be helped by a 9-volt battery. You need to remove the speaker from the dock and gain access to the wiring underneath. Wire up the radio to that, then grab a couple cheap car speakers and hook them up to the radio. Place the black lead on the negative terminal. Connection with 9 volts battery, testing car speakers with a battery; 1.3 Step3: Use of Multimeter: 1.4 Step 4: Capacitor testing: 1.5 Step5: Testing the wires: 1.6 Step6: Testing of the fuse of the amplifier In this article, our editors have explained the best methods to maintain your car battery while using a stereo. 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