Be careful of you choice of locations. I installed a pair of USB outlets in the wall of the slideout and found the outlet was too deep for the wall. I had to make a spacer for the USB outlet to make up the space. I tapped into the hot side of the light switch and mounted the outlets about 4 inches below the light switch. If you pick the wrong side of the light switch the USB plug will only be hot when the light is on. Be sure to check the amperage of the USB outlets not all are created equal. I needed a minimum of 2 amps to power my phone when using it as a HDMI source to watch Netflix off the phone while plugged into HDMI on TV. Otherwise it discharges faster than it charges.