Persuaded to have left the keys (3)
I believe the answer is:
led
'persuaded' is the definition.
'have left the keys' is the wordplay.
'have' becomes 'l' (I can't justify this - if you can you should believe this answer much more).
'left' says the letters should be written backwards.
'the keys' becomes 'de' (I've seen this in other clues).
'de' written backwards gives 'ed'.
'l'+'ed'='LED'
'to' is the link.
Can you help me to learn more?
(Other definitions for led that I've seen before include "induced to" , "showed the way ahead" , "Went at the head of others" , "Guided; small light" , "was in the van" .)