I bought a N1 without the brain on ebay so I got the brain and all wiring from other seller on ebay. I went to have it all installed at a shop today but all the unit is doing powering on, just the blue lights where you would put a CD in. The monitor wont flip up or anything. So I guess my question is do you guys think its the head unit or the brain thats causing this and or is there something else that could be causing these problems?

Problem solved.