You must install a fuse within a few inches of the battery. That fuse is to protect your car not your sound system. Its job is to blow and cut power from the battery in case there is a short or your power cable is grounded. If you have a short and no fuse.......... :boom1:


Make sure you buy and install a waterproof fuse holder. Its not expensive. I bought mine for around 200 pesos. The fuse amperage must be a higher than the total ampers of your amp/s.

The fuse on your amp, if it has one, is there to protect your amp. If your amp is not fused, install one a few inches from your amp. No need to install fuse on speakers.