So I have the Audi Concert Head Unit, with the tape player and 6 CD changer in the boot. I've got radio keys for this, as I've previously removed the radio to replace the hazard relay switch (which is incidentally giving me problems again) I simply cannot get the radio out, every previous attempt took 30 seconds to remove it if that but at the moment neither of the following are working: the correct radio keys, hacksaw blades, feeler blades! I can't really drive the car anywhere because my indicators are completely non-existent so I'm completely stuck. Since my head-unit has the volume problem, I thought I could solve both my issues by buying a new head-unit (and getting it fitted) - so I went down to Halfrauds, picked one out but now I need to find out whether my system is half or fully amplified - any ideas? This is really doing my head in, so any help would be greatly appreciated!