Hey all! This forum rocks! I have a 2004 SLK32 AMG. Some people tell me it has a Bose A2 system, some people say it has a stock (non bose) system. I want to put a new head unit in but all the shops around my house want $300+ to install it! They all claim that there is a special cable needed to install the HU to my AMP. Can anoybody verify this or tell me what i may need? I am a very technical person but this would be my first foray into car audio. Any help is appreciated. Thanks!!