What can be done so I can have my iphone run through my car system, and preferably charge at the same time without having 90 million wires jumping all over the place?

Thanks!

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2007 BMW X3
Jet Black W/ Black Leathertte Interior
Navigation, Heated Seats, and a Heated Steering Wheel.

"I made love to my BMW once, she didn't call back, but did send a DVD care package"