Ready to go walkies when you tempt into trouble (4,2)
I believe the answer is:
lead on
'walkies when you tempt into trouble' is the definition.
I can't tell whether this definition defines the answer.
'ready to go' is the wordplay.
'ready' becomes 'on' (if a device is on it is ready for use).
'to' means one lot of letters go next to another (I've seen this in other clues).
'go' becomes 'lead' (leading is a kind of going).
'on' after 'lead' is 'LEAD ON'.
Can you help me to learn more?
(Other definitions for lead on that I've seen before include "Deceive in fun" , "Tempt, encourage" , "Take for a ride" , "Show the way inside" , "Persuade to do something foolish; trick, deceive" .)