Hi have searched around various threads but im stuck! Basically replacing the old headunit with a new one and purchased the pc9-404 lead to fit it as I have the brown cable which I read up means I do not have bose system. But from fitting it I seem to get nothing headunit doesn't even power on then I tired another set of cables I purchased from halford which was the 401 and that didn't make a difference either! Anyone got any ideas really winding me up now! Headunit is brand new by the way and tried a friends headunit that didn't power on either! Any help would be much appreciated!