I really like the turn-by-turn directions on my Apple iPhone but since I have the device hooked up via Bluetooth to my car audio system, it constantly interrupts whatever music I’m listening to with its warnings about upcoming turns and instructions to turn left, turn right, etc. I don’t need the audio component, just the directions from Apple Maps. Is that even possible? Makes me want to unpair my iPhone 5 from my Ford hands free setup, but I don’t want to have to fuss with it if a call’s coming in. Help!