hi all i have got to install a new cd player in an o2 authentique clio, i have never done one before so a few questions if any body can help i would apreciate it! is it the usual u shaped removal tool, what adapter will i need to get the new cd player to work or will it just plug straight in to the existing harness its a murphys cd - 7510? anything i need to know b4 doing this? how does putting a new cd player in affect the code requirements?