Energy needed to manage course? (6,7)
I believe the answer is:
direct current
'energy' is the definition.
(direct current is a kind of energy)
'to manage course?' is the wordplay.
'to manage' becomes 'direct' (directing is a kind of managing).
'course?' becomes 'current' (current is a kind of course**).
'direct'+'current'='DIRECT CURRENT'
'needed' is the link.
(Other definitions for direct current that I've seen before include "DC in full" , "Electricity flowing in one direction only" , "Electricity flow from, eg, battery" , "potentially shocking!" , "Electrically, DC" .)