Just bought my h2 yesterday an 03 with the multi disk nav system and was wondering is there a centralized resource that explains the external inputs for this device? I see in pieces everything I would like to add like the bluetooth for headset profile/audio muting, backup cam and ipod interface, hd radio but I don't see them all as one device/package and they all seem to use the same type interface, can they literally be daisy chained? I know a new system would probably be cheaper and more flexible but I would like to keep the stock look.