Why Does My Motorcycle Stereo Keep Blowing a Fuse?

June 29, 2018

Whether it's for a car, motorcycle, boat or pretty much any other vehicle or automobile, stereo systems are typically safeguarded with one or more fuses. When the fuse blows, it disturbs the flow of the electricity in the circuit; thus, preventing the system from working as intended. Although a nuisance, blown fuses are actually good, as it protects your stereo system and other connected components from excessive power surges that could otherwise damage or destroy them.


If you find a blown fuse in your stereo system, you should go ahead and replace it. Fuses are inexpensive and easy to replace, typically requiring nothing more than pulling the old fuse out and pushing a new one in its place. Hopefully, this will resolve the issue. But if you discover the fuse continues to blow for a second, third or fourth time, perhaps you should try to identify the underlying cause. Only then can you keep your stereo system safely running without fear of damaging its components.


Check the Fuse Rating


One of the first things you should do is the check the fuse rating. All fuses are given a “rating,” which indicates the  current needed to  blow it. Only a current equal to or greater than the fuses rating may blow it. Now here's the thing: if you use a fuse that's underrated for its respective purpose, it may blow from normal usage.


You can find the fuse rating by checking the side of the fuse. Fuse ratings are typically defined in amps, with higher amp ratings allowing for more power to pass through it before blowing. Before removing and discarding the old fuse, inspect the side for its rating. Using this information, you should replace it with a new fuse of the same rating.


Inspect Wiring


Assuming you are using the correct fuses in your stereo system, you should inspect the wiring next to determine if it's the problem. Audio wires are typically protected with an outer shielding layer, which is essential to its function. Over time, however, this outer layer may wear away, exposing the copper wiring. When this occurs, it can lead to power fluctuations; thus, shorting out the system and blowing a fuse.


Take a few minutes to thoroughly inspect your stereo system's wiring for damage. If you see a damaged area, you have one of two options: you can try patching it (usually a temporary solution), or you can replace the entire wire.


When in doubt, you can always take your stereo system to a professional motorcycle audio installation service provider. They should be able to diagnose the cause of your blown fuse and offer recommendations on how to fix it.

------These tips and more brought to you by the Steel Horse Audio Blog. Check us out for motorcycle and biker news as well as the best in motorcycle speakers and audio products! -----

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