Disabling always on power in usb ports

[AlohaRob]

I just did this mod as well. Works perfectly and is really simple. I disconnected the negative terminal on the battery before starting this modification. Keep in mind, after reconnecting the battery it takes a few hours for everything to start working correctly. After reconnecting the battery AC only blew hot air, Sirius wasn’t available, AUTO and SYNC didn’t work on the AC. Couple other weird things. After a couple hours everything calmed down and was back to normal and USBs only had power when the truck was on. Perfect.