Transfer (5)
(Other definitions for refer that I've seen before include "Pertain or cite" , "Direct elsewhere" , "Allude (to something)" , "Draw attention" , "Relate" .)
'transfer' is the definition.
(design transferred onto a surface)
This is all the clue.
(Another definition for decal that I've seen is " Transfer - laced (anag)".)
'transfer' is the definition.
(I know that wire is a more specific form of the action telecommunicate)
This is the entire clue.
(Other definitions for wire that I've seen before include "Telegram about the fencing material" , "Thin drawn metal" , "Flex" , "Thin metal thread" , "Drawn-out metal" .)