I have just been given an Alpine Headunit, which I am going to install in my Citoren C4 VTR Coupe, when I went into Halfords the guy told me that there is a chip which should be removed before the system is installed, is this correct? He said that this may cause problems with my electrics package, ie. power steering, cruise control etc. He also said I would need an aerial adaptor at about £20, no major issue there then, but is this all I need to do. Cheers