I am new to the forum and just purchased my first Benz. Its a 2006 C230 Sport sedan. I purchased the clarion MAX685BT before researching and now the fun has begun. I do not have the HK system or a changer or anything. I have a two channel and four channel amp with subs if needed but would like to know what to do to install the head unit. I understand there is not a harness available for my car so I am wondering if I splice into the factory wires in the harness or run new? Do I leave the factory plug just hanging behind the new deck? I have installed complete systems before so running new speaker wire is not an issue. My only question on that would be could I just splice into the speaker wires behind the deck and run them to the trunk to the amps from there? Im not even sure if my car has fiber optics or not. Wow this stuff is overwhelming!!