Fish the electrical wire from the box into the wall and to the power source identified in the planning stage.
How to add a light on exterior wall of garage.
Use a saw to trim your conduit to those dimensions and smooth the edges with a round file.
Attach a right angle connector piece to the top of the conduit that connects to the box.
Use a screwdriver to pry the round knock out plug from the top of the extension box.
Twist your wire cap on to secure the two wires.
Attach a 1 2 inch metal conduit connector to the top of the box.
Make sure they are firmly connected.
After turning off the electricity to the garage remove one of the existing wall receptacles.
Screw the metal mounting plate that comes with the extension box to the electrical box in the wall.
If there is drywall in the garage it may be necessary to cut access holes in the drywall or to run the cable in a surface conduit.
Twist the white wire from the light fixture to the white wire coming from the wall using a clockwise motion.
Exterior garage lighting ideas are plenty for a double garage or multiple garages place your outdoor wall sconces at the outermost pillars of the garage to cover the whole area.
Or alternatively opt for a flood light or motion sensor outdoor light above the garage to light the whole area any time someone drives up.
Outline the back of a remodeling electrical box on the siding with a pencil and cut around the outline with a keyhole saw.