Can anyone help? I bought a second hand cassette/radio. I followed the instructions which came with it with regard to putting in the code. When I had done everything nothing happened...apart from the little red light flashing. I disconnected everything to start again and now all I get on the display are three dashes, with the engine running or not running. What have I done wrong and how can I put it right. HELP!!!!! Driving is so boring with no sounds and I keep hearing noises in the engine and wheels and boot and windows. I'm getting paranoid!!!!Highlandercain.