Wanders away from the street lights (6)
I believe the answer is:
strays
'wanders away' is the definition.
'strays' can be an answer for 'wanders' (I've seen this in another clue). I am not certain of the 'away' bit.
'street lights' is the wordplay.
'street' becomes 'st' (abbreviation).
'lights' becomes 'rays' (I can't explain this - if you can you should give a lot more credence to this answer).
'st'+'rays'='STRAYS'
'from the' is the link.
Can you help me to learn more?
(Other definitions for strays that I've seen before include "Wanders off with satyrs" , "Goes off course" , "Gets lost, wanders away from the track" , "Wanders off course" , "Wanders off the path, gets lost" .)