Hi.. I had a water leak in my trunk and my amplifier was blown by it. When i serviced the car at the dealers they also confirmed that the amplifier was shut. I purchased an amp from ebay which costs much less than the dealer price and it was taken out from a 2010 335i. mine is 2006 330i. I plugged the amp yesterday and still there is no sound. Does it need coding or something else? 6 months without music in the car is a long time.