Be VERY VERY carefull when splitting the a/c unit there are 4 little clip thingy's 2 top 2 bottom, prise those apart and slowly seperate, believe me do it carefull as I killed my clock display opening one up because it's really sensative, it's happened to a few guy's on here so be warned, especially as the units are dated so finding the correct one for your cars year can be difficult.