Dynamic guys left? I have cables! (4,5)

I believe the answer is:

live wires

I'm a little stuck... Click here to teach me more about this clue!

'dynamic guys' is the definition.
The definition and answer can be both people as well as being plural nouns.
Perhaps you can see an association between them that I can't see?

'left? i have cables' is the wordplay.
'left?' becomes 'l' (common abbreviation).
'i have' becomes 'i've'.
'cables' becomes 'wires' ('wire' can be a synonym of 'cable').
'l'+'ive'+'wires'='LIVE WIRES'

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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