It's more sensible to untangle wires (5)
I believe the answer is:
wiser
'it's more sensible' is the definition.
(I've seen this before)
'untangle wires' is the wordplay.
'wires' can be anagrammed to 'WISER'.
But, I am not clear how the anagram is indicated.
'to' is the link.
Can you help me to learn more?
(Other definitions for wiser that I've seen before include "Comparatively intelligent" , "A little more sage" , "More shrewd" , "Less foolish" , "more enlightened" .)