Bearing in mind I’m self taught . I approached the same issue and I have a ignition fed 10 way bayonet fused box and a second 10 way bayonet fused box , perhaps way over the top but I can allocate each circuit and when the fuse light goes on it means there’s a problem with the circuit . The second pic shows a close up of a 4 way box just to show what it looks like . The red light comes on when you have an issue . Don’t ask me how that works but it does . My brake light switch Disintegrated and I only found out when I saw the fuse light . I can revert the system back to standard if deemed necessary in the future
The nut is the input feed and there are 2 tabs at each end for output feed
I can send you the fuse box layouts if you need them
Paul
I used the opportunity to add relays to main, spots, dip. Horn, fan