Great question! While we can add wires behind walls when mounting and setting up a TV, it wouldn't be included with the TV Connect and Mounting service. You would need to let the technicians know beforehand and pay an additional fee for hiding wires inside the wall. There also could be other factors to consider such as the wall surface, and permission from the building if you are a renter. To learn more and schedule an appointment please call us at (800) GEEK-SQUAD or (800) 433-5778.