Well, it all went well. Was nice and easy to get off, only then did I discover that the plug I had didnt fit in the back of the display. One phone call to Alpine tech support later and they tell me that the new display interface cables dont need to go in to the back of the display, you just plug the yellow iso plug that goes into the back of the current radio into the harness. AAAARRRRRRRGGGGGGHHHHHHH. I didnt ned to take the dash off at all!!! didnt get it finished though, was 5pm by the time I found that out so by the time I get the dash back on it was dark.
Tomorrows job, put a direct feed from the battery through the chassis, find out which cable is the instrument panel lights and get the bloody radio in!
You live and learn...........