You can read the recommendations in the user guide, the technical guide or the installation guide for SONY CDX-GT260MP. You'll find the answers to all your questions on the SONY CDX-GT260MP in the user manual (information, specifications, safety advice, size, accessories, etc.). Detailed instructions for use are in the User's Guide.
When replacing the fuse, be sure to use one matching the amperage rating stated on the original fuse. if the fuse blows , check the power connection and replace the fuse. If the fuse blows again after replacement, there may be an internal malfunction.. Your user manual SONY CDX-GT260MP...