Bought my brother a new JVC radio for his C5. The plug on the C5 was the same as the connector on the new radio, so I plugged it straight in expecting it to work. Well, in a way, it did. It powered up and seemed fine. Problem is, it didn't switch off with the ignition, and while it eventually switched itself off when the 'economy mode' kicked in, it lost it's memory. Also found out later that it would switch itself on automatically when the car doors were unlocked! Now, I'm assuming this is because the way Citroen wire their radios is different to the normal standard (or the JVC one anyway). I'm going round to re-wire it tomorrow, but is there anything else I need to know, or should it be straight forward?