Hi guys, I did not get the USB with my Ram, but I have the "premium" Alpine non Nav deck. I was looking through the manual to get the garage doors programmed, and wound up in the Electronics section. They showed that the USB port is in the glove box, and for S&G I looked. I found a dummy plug, and after further inspection discovered wiring to said dummy plug. Pics below. Is there a cheap part numbe for us to "add" the usb port and it work properly if we want?