hi can anyone please help with my citroen/ clarion radio code,ive just changed the battery but didn't realise it would be lost,the model is PU-2471A9E),serial no,CLO54220590594E, above that if it helps is CLARION RD3-01 THEN 96476647XT then above that is 286-9487-23,lastly on the side of the unit printed is H2120206C,thanks.james.