I dont have the ISO connector, just loads of wires sticking out of my dash where the radio should sit. I've worked out what they all do but I'm confused about a couple of things: 1. Power Antenna Wire - White/Yellow Is this only used if you have an electric retractable antenna or can it be used with a standard wing mounted aerial somehow? I dont want to wire it into my head unit if its not going to do anything! 2. Illumination Wire - Grey/Blue Dont have a clue what this is or what it does!? 3. 12v Ignition Set (Lack of!) Does it matter if I just wire up my unit to the constant 12v feed or would anyone recommend taking a 12v spur from the ignition area somehow?? Thanks very much for your help in advance!