Basically you drill a hole in the subfloor. Use fish tape[0] for pulling cables through holes up from the crawlspace. Cut a hole in the drywall (use a stud fi

Basically you drill a hole in the subfloor. Use fish tape[0] for pulling cables through holes up from the crawlspace. Cut a hole in the drywall (use a stud finder), punch down the cable and mount the faceplate. [0] For example: https://www.homedepot.ca/product/klein-tools-1-4-inch-wide-steel-fish-tape-25-foot/1000664117 https://www.homedepot.ca/product/klein-tools-1-4-inch-wide-s...