Hi all, i have been doing some research about how to get a working USB cable my headunit (picture attached) and i got some ideas to connect a cable to cd changer connector to have a usb connection. (details of how to make a cable is attached as well) Moreover i have a JDM hence a small freuquency band for FM radio, for which i was suggested to get a FM invertor installed between the antenna and FM connector behind HU (picture attached). Need advice about how good an advice it was and if there is a better solution of doing it. I dont want to install a custom music player and want higher FM frequencies & USB option in my existing system... would appreciate your help. Thanks