![]() ![]() This indicates that the battery is still accepting charge from the alternator. You should get a reading of 9.6 volts or above for a 12-volt battery.The red multimeter probe goes to the positive terminal and the black probe goes to the negative.Calibrate the multimeter to 20 volts DC.Disconnect the battery from your car by loosening the nuts that hold both positive and negative terminals of the battery.The video below demonstrates the entire process: If it shows zero, your car radio fuse is blown. If you have a wire that's low and it's giving a different voltage reading, it could mean that the wire is either failing or the connections are loose. Regardless of which wire you're testing, it should give you a constant 12-volt reading, indicating a healthy connection. Again, if it gives you a reading of 12 volts, it's good. Touch the red wire with the red probe.The multimeter should give you a reading of 12 volts. The black probe should go into the ground wire, which is generally a black wire. Touch the yellow wire with your multimeter's red probe.Calibrate your multimeter to 12 volts DC.You'll be testing its wires so you need to make sure they are exposed so you can work on them easily. Here's how you use a multimeter to check your car radio's voltage: If you're not getting the correct amount, your battery may need to be replaced. If you see that you're receiving the right amount of power, then you may just need to tighten the wire connections. You can easily do this by checking the amount of electricity flowing into your car's radio using a multimeter. If your car's radio keeps resetting, it's a good idea to check the voltage of your car's radio first. Also, check if the battery terminal connectors are firmly connected to the battery terminals.Ī car radio needs the right amount of voltage for it to work as it should. Trace the wires from your radio to the battery and check if the connections are tight and snug. How To Check Loose Connection In Car RadioĪ loose connection in your car's radio is an easy fix. ![]() Once you've located your car's radio fuse, pull it out and check its condition.Each of the fuses is color-coded so you'll know which fuse does what. Refer to your car's manual for the location and color of your radio fuse.Other places where you can find the fuse panel are anywhere near the dash or steering wheel. Here's how you replace a busted car radio fuse: You will know if the fuse is busted if the metal pieces are broken. The metal pieces that join the fuse together are usually held in place by some sort of transparent plastic between them. How To Replace Car Radio FuseĪ broken car radio fuse will be easy to spot. ![]() Otherwise, you might end up replacing your battery and spending needlessly on a problem that could have been solved by just a mere fuse replacement or wire adjustment. However, before you think of replacing the battery, make sure that everything else that is electronics in your car is experiencing the symptoms of a failing battery. A deteriorating battery that is low on power won't hold a charge long enough to keep an electronic component powered, so it will reset. If you've experienced a car radio or clock that keeps resetting, it's most likely an issue with the battery. What Causes My Car Radio And Clock To Keep Resetting? We'll look at how you can fix this problem, along with what causes the issue in the first place. This issue is common among people who drive long distances, especially on road trips. If you've ever had to set your car radio or clock time more than twice, then you know how annoying this can be. There's a switch inside your ignition system that turns the clock on so any dirt that gets in there could cause connectivity issues. Insert the key into the ignition switch and wiggle it back and forth to clear any dirt. You do this by putting some acetone on your car key. Most car models (1994 and older) power their clocks through the dome fuse. If it does, you may have to replace its fuse.
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