Plugs have to pull (3)
I believe the answer is:
lug
'pull' is the definition.
(I've seen this before)
'plugs have' is the wordplay.
'have' says the answer is hidden in the clue.
'LUG' is hidden within 'plugs'.
'to' is the link.
(Other definitions for lug that I've seen before include "A slangy ear" , "Haul; ear (slang)" , "Drag heavily" , "Drag with effort; ear" , "Pull - ear" .)