Ok, thanks to all your help, my install is nearly complete. One thing remaining and thats to connect the arial to my Alpine CDA9812. I have been told I need some sort of adapter, which requires a 12V feed. Any pointers here?, which colour wire on the audi loom currently powers the arial, or is it not powered. I am a wee bit confused, why is nothing on an Audi simple? Oh well keeps me busy and curious.