Exploit shares on move around noon (7)

I believe the answer is:

harness

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'exploit' is the definition.
(I know that harness is a more specific form of the action exploit)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for harness that I've seen before include "Supporting gear" , "Leather straps for a horse" , "Horse's straps, etc." , "Render useful" , "Exploit, utilise" .)

I've seen this clue in The Sun.

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