If you don t want to cut a hole for a recessed electrical box you can skip this step.
How to install outside receptacle on siding.
Screw the outlet to the box then apply a bead of silicone around the face of the box.
Guide the end of the 12 2 cable through the hole in the middle of the exterior box and push the box against your siding.
Retrofitting an outdoor outlet is a bit more work than an indoor outlet especially if you live in a brick house like i do.
Tuck the wires neatly into the box and secure the outlet to the box using the provided screws.
Beginning at the hole you drilled use the keyhole or saber saw to cut around the outline.
Cut a mounting block out of 1 inch lumber to mount a fixture on vinyl or clapboard siding.
Then strip about two feet of sheathing off the end of the cable and cut off two of the three wires.
Tape the end of the remaining wire to the end of the sheathing forming a loop.
Pass the cable end through the connector then tighten the connector.
The block should be rectangular and large enough to accommodate the base of the fixture.
Be sure to get an outlet box that s meant for exterior use.
How to add a household outlet or receptacle to a house outside wall etc.
I have seen plenty of guides online with straightforward techniques to add a plug on siding exteriors but never found a good guide for a brick exterior.
Start by removing a knockout in the box by hitting it with a screwdriver.
From inside the garage install a cable connector onto the main electrical box.
Screw an exterior outlet box to the outside wall so it lines up with the hole.
Run cable from the interior box to the hole in the exterior.
Screw on the box cover.
Install the outdoor box cover as directed by the manufacturer.
Hold the outside outlet box against the exterior wall where you plan to hang it checking to make sure the box covers.