Require little light when irritated (7)

I believe the answer is:

needled

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'irritated' is the definition.
(I've seen this before)

'require little light' is the wordplay.
'require' becomes 'need' (synonyms).
'little light' becomes 'led' (abbreviation for light emitting diode. I am not sure about the 'little' bit.).
'need'+'led'='NEEDLED'

'when' is the link.

Can you help me to learn more?

(Other definitions for needled that I've seen before include "bugged" , "Irked" , "Irritated (sl.)" , "Provoked with sewing implement" , "Goaded or provoked" .)

I've seen this clue in The Daily Express.

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