Step 3 · Install or Prepare Electrical Box
If running new wiring, use a drywall saw to cut an opening for an 'old work' electrical box. Feed the electrical cable through the box's knockout and secure it. Mount the electrical box firmly to the wall framing or joists. If using an existing box, ensure it is securely fastened and suitable for the weight of the sconce. Remove the appropriate knockout from the box for the wire to enter.