If you're comfortable working with electricity, you'll need to see if the AC goes into the light first, then splits off to the switch. If so, you can tie in the motion light power at the light.
If the AC goes to the switch first, you'll need to tie it in at the switch.
What you're trying to find is the point where AC is always availble...
If the AC goes to the switch first, you'll need to tie it in at the switch.
What you're trying to find is the point where AC is always availble...