Hi. I am new here, not new to my 407.... Today I got a RT4 headunit in the car - it came with a RD4. I am thinking about a 7" Nexus tab mod to work with the RD4, but if I do that I would like to get the Nomad (USB/BT) unit installed. I do find diagrams for the basic BT unit but not the Nomad (BT/USB). I could find this on servicebox, but for that I need an RPO number for a car that got this installed. Or if anybody got this diagram I would love to get it. The Nomad uses both AUX; Aux 1 for Bluetooth - in stereo since Nomad supports streaming (from what I know) and AUX 2 for USB. I could opt for a swap with a standard BT unit, since I would be using the AUX 2 for the Nexus tab. But having the option to connect a USB stick to the RD would be very nice. So can anyone help me out, please...