A container for little bits of wire (4,3)
I believe the answer is:
fuse box
'wire' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?
'a container for little bits' is the wordplay.
'a container' becomes 'box' (box is a kind of container).
'for' is a charade indicator (letters next to each other) (I've seen this in other clues).
'little bits' becomes 'fuse' (I can't justify this - if you can you should give a lot more credence to this answer).
'box' put after 'fuse' is 'FUSE BOX'.
'of' is the link.
Can you help me to learn more?
(Another definition for fuse box that I've seen is " Container for electrical safety devices".)