what started me looking at this is I have a yellow/green wire from my MFRU to the fuse holder to the inertia switch, thence to the pump: all the same colour coded wire. I plan to cut the wire from the MFRU and the wire (at the inertia switch) so cutting out the trip to the fuse box and back (one culprit responsible for voltage loss).
I gather I can choose to not fuse it because the main system is fused, but I prefer to know which circuit has blown and so to inline fuse this new shorter circuit. I do not want to have any more connections than necessary: so a spade on each of the aforementioned wire would plug directly to a blade fuse. Not so good. That means finding a fuse holder where I can connect my own yellow/green wire and not have to use the usually offered red wired inline fuse. As far as I can see these holders have red wire pre-moulded in and do not offer the chance to change the wire. Please do shout if you know different.
Hence looking for a suitable fuse holder. Nor really at this time do I want to add a multiple fuse holder because that's a bit of a projectlet.
Wondering who else has been along this path and with what findings.