Just curious about this. I've never seen how facebrick is installed.
My wife wanted to hang something on an external brick face on our 1962 house.
I drilled in mortar between bricks, careful not to go more than about 1 1/4 inches, not sure what might be behind the sheathing. Last thing I want to do is hit a wire. I used plastic anchors and #8 screws, there's nothing heavy involved.
One hole was solid at the back, the other had a gap. That surprised me. If I went past brick I should still be in sheathing, right?