Become a criminal, shining light! (6)

I believe the answer is:

beacon

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'shining light' is the definition.
(a beacon is a bright light)

'become a criminal' is the wordplay.
'become' becomes 'bea' (I can't justify this - if you can you should believe this answer much more).
'a criminal' becomes 'con' (abbreviation for 'convict').
'bea'+'con'='BEACON'

Can you help me to learn more?

(Other definitions for beacon that I've seen before include "Signal fire - signalling buoy" , "Radio transmitter for positioning" , "Signal-fire" , "Signal fire - transmitter" , "guidance" .)

I've seen this clue in The Telegraph.

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