Access support with couple wanting a switch (8)
I believe the answer is:
recourse
'access' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
(Other definitions for recourse that I've seen before include "Legal right to demand payment" , "Resource as a means of help" , "Expedient" , "One resorted to" , "one looked to for help?" .)