So, I don't know what you know, so forgive me if I am stating the obvious.
Take that trap and put it somewhere protected, under a bush, a dark quiet place. Put towels or blankets OVER it. Your cat will find the food with his nose, not his eyes. Cats usually prefer dark enclosed places and a bare cage isn't necessarily going to attract a cat.
If he's been trapped before you should actually wire the cage OPEN for a while so he can come and go (and not have the cage slam shut and scare him away from it!) and once he gets accustomed to eating out of that cage then let him trip it.

good luck