The single detail that separates a professional mounted TV from a DIY one is the tangle of cables dangling below it, and learning how to hide TV wires in wall is the fix that makes a floating television look truly built-in. Running the cables inside the wall costs under $60 in parts and takes about two hours, yet it transforms a messy setup into the clean, cinematic look you paid for when you mounted the TV in the first place.
The job is well within reach for a confident DIYer, but there is one hard rule you must respect: standard TV power cords cannot legally run inside a wall. This guide covers the safe, code-compliant way to hide both the low-voltage cables and the power, with the exact parts and steps.
The Code Rule You Cannot Ignore
Before touching a drywall saw, understand the electrical safety issue. The National Electrical Code prohibits running a standard appliance power cord, the kind with a plug on the end, inside a wall. Those cords are not rated for in-wall use and pose a fire risk. This is not bureaucratic fuss; it is a genuine hazard and it will fail a home inspection.
There are two compliant solutions. The simplest is a recessed in-wall cable management kit, which includes a new recessed outlet installed behind the TV and a pass-through plate near the floor, letting you plug the TV’s own cord into an outlet up high. The second option is having an electrician run a proper in-wall circuit. Most DIYers choose the kit, which is designed and UL-listed exactly for this purpose.
Gather Your Tools and Materials
Assemble everything before you cut, so the job flows without trips to the store.
- In-wall cable management kit with recessed power (Kit brands like PowerBridge or DataComm run $40 to $70).
- Drywall saw or oscillating multi-tool for cutting the openings.
- Stud finder to locate studs and avoid cutting into them.
- Fish tape or a length of stiff wire or string with a weight to pull cables down through the cavity.
- Level, pencil, tape measure, and a screwdriver or drill.
- HDMI cables long enough to reach from the TV to the components below, plus a couple feet of slack.
Locate Studs and Mark Your Openings
Plan the two openings first. The top opening goes behind where the TV will hang, and the bottom opening sits near the floor behind your media console or where the components live. Use the stud finder to map the studs across the wall, then position both openings in the same stud bay, meaning the vertical space between two studs, so the cavity runs clear from top to bottom with no framing blocking the path.
Hold the kit’s mounting plates against the wall and trace their outlines with a pencil, keeping them level. Double-check that the top opening will hide behind the TV and that no wires or pipes run in that bay. If you have any doubt, drill a small hole and probe with a bent wire before making the big cut.
Cut the Wall Openings
With your outlines marked, cut carefully. Start with a small pilot hole and confirm the cavity is clear, then use the drywall saw or oscillating tool to cut along your traced lines. Work slowly and keep the cut just inside the line so the plate covers the edges cleanly.
- Cut the top opening behind the TV location first.
- Cut the bottom opening near the floor behind the console.
- Vacuum the drywall dust from inside the cavity and off the floor.
- Test-fit both bracket plates to confirm the openings are the right size.
Fish the Cables Through the Wall
Now connect top to bottom through the open stud bay. Feed your fish tape or a weighted string down from the top opening; gravity does most of the work. Reach into the bottom opening, grab the end, and pull it through. Tape your HDMI cables and the kit’s power connector to the fish tape and pull them up or down through the cavity.
Leave a couple of feet of slack at both ends so you have room to make connections and to reposition the TV later if needed. If the cable snags on a fire block, a horizontal piece of framing inside the bay, you may need a second opening at that level to route around it, then patch it afterward. In most walls the bay is clear from top to bottom.
Wire the Power Kit and Mount the Plates
The in-wall kit’s power side is the key to doing this safely. The kit provides a “power in” module near the floor and a “power out” recessed outlet up top, connected by an in-wall-rated cable that comes with the kit. Plug your existing wall outlet into the bottom module, and the TV’s own power cord plugs into the recessed outlet behind the TV. No standard cord ever runs inside the wall; the only in-wall cable is the kit’s rated one.
Screw both bracket plates to the drywall using the included anchors or by catching a stud. Snap the face plates on. Run your HDMI and any other low-voltage cables straight through the open pass-through, since those signal cables are permitted in the wall without special rating in most residential situations.
Mount the TV and Finish Up
Hang the TV on its mount, connect the recessed outlet and the HDMI cables at the top, and connect the components and power at the bottom. Route the slack neatly inside the cavity. Power everything on and confirm the picture and sound work before you tidy up. If a source does not display, recheck the HDMI connections at both ends.
Step back and admire a television that appears to float with no visible cables. The whole project runs about two hours and under $60 in parts, and it delivers the clean, built-in look that makes a wall-mounted TV worth the effort. Knowing how to hide TV wires in wall the safe way gives you a professional result without an electrician’s bill, as long as you respect the one rule about keeping standard power cords out of the wall.
