PCB design for automotive fusebox? - Stack Exchange I am currently in the process of designing an automotive (motorsport related) fuse-box as a side project to my studies. I've not had much luck searching for fuse holders (20 position) however while PCB design for automotive fusebox? I have a current layout of a standard design using fuse and relay holders (though it's hard to find the Fuse Blocks - Automotive - WiringProducts. Ltd. wwwngproducts››Fuses, Fuse Blocks and Fuse HoldersAutomotive fuse blocks for power distribution in automotive, marine, motorcycle, RV, and other 12 volt and 24 volt electrical systems. Fuse blocks are available in 2 to 12 circuits. Most of our fuse blocks and fuse panels use the ATC style fuse, but we also carry some that use the AGC fuse, and the higher power AGU and ANL fuses.