If you doing this because the power port stays on all the time you can change it to turn on and off with the ignition.
In the right instrument panel fuse block, if you move the 50A fuse from F28, and place it in F27 the power ports will only have power when the vehicle is ON, or in RAP (retained accessory power). Basically if the radio is on they will have power. That way you won't have a parasitic drain with your 12V accessories.