After turning off the electricity to the garage remove one of the existing wall receptacles.
How to add a light on exterior wall of garage.
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 your wire cap on to secure the two wires.
Twist the ground wire coming from your light fixture to the ground wire coming from the wall using a clockwise motion.
Use a screwdriver to pry the round knock out plug from the top of the extension box.
Fish the electrical wire from the box into the wall and to the power source identified in the planning stage.
Twist the white wire from the light fixture to the white wire coming from the wall using a clockwise motion.
Use a saw to trim your conduit to those dimensions and smooth the edges with a round file.
Screw the metal mounting plate that comes with the extension box to the electrical box in the wall.
Step 3 turn off the power source and wire the light fixture s according to the included instructions.
Make sure they are firmly connected.
Attach a right angle connector piece to the top of the conduit that connects to the box.
Outline the back of a remodeling electrical box on the siding with a pencil and cut around the outline with a keyhole saw.
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.