If you have DSP be careful with the 3 pins connector. Why because there are two 3-pins connectors in the same location and using the one for the phone will damage whatever you hookup to it since the ground and power are not the same. There a Youtube video on how to set up a dice media bridge in an E53 by Bav Sound Work.

I have a Grom a USB unit install in my and if you search my posting you will find out about it.

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2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD
Lotus Europa 1970 Destroyed by fire
Lotus Europa 1970 S2 Renault Powered
Lotus Type 52 1970 Twincam Webers Powered
PORSCHE 911 Targa 1982 The Garage Queen
Audi Avant donated to Kars for Kids
BMW 525IT Sold
Audi 4000CS Quattro Sold
Jensen Healey Lotus Powered Sold
Opel 1900 Sold
Triumph Spitfire 1971 Sold
Triumph Spitfire 1968 Sold
Plymouth "Cuda" 340 Six pack SOLD