I've managed to find the correct crimp connectors albeit fur just shy of twenty quidIf im following what you are are on with, then i would guess and this may be naive that the wire that exits the fusebox would goto the CDC as this is all that is shown in the handbook to be on that fuse,a simple continuity will prove?
If anyone needs a few I'll have some left over
I'll know more when I rewire the broken wires and then test again! I'm also fitting a single CD to dash just in case. Haven't used a cassette since 1998 anyway!