Hi. After the accident I have to replace left headlight with ballast. Does anyone know if this item is p&p or needs programming? I already bought 3 ballasts with the same part number on ebay and none of them works.. New headlight 100% working with ballast from driver side headlight. Any ideas? Part number 7P5.941.591.AD Leon ST 17 plate, facelift model, full led with headlight washer sysytem, xcellence.