Conrad and Stanley got Telsa fixed (8)
I believe the answer is:
constant
'fixed' is the definition.
(I've seen this in another clue)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for constant that I've seen before include "Loyal - firm" , "Never-ending" , "Continuous" , "staying the same" , "without changes" .)