Looking for some help regarding my headunit/radio. I recently bought an 2004 audi a3 but the radio dont work. I do not have the owners manuals either. I have checked fuse 8, 9, 17 and 18 as someone posted that they will be the fuse numbers. Taken the radio out and the fuse behind is ok. I cant get my head around the wiring. I only have two plugs for the radio, one for power and one for what looks like the subs etc. It says bose on my speakers but i cannot see the connections for it? Can anyone help im desperate to get some sound in my car. Its so boring driving to work without any audio. All help is appreciated. Thanks in advance.