TC reported after changing end that oneof the saloon lights in car 3551 near 'B2' door was not work ing. TC reported after changing end that one of the saloon l ights in car 3551 near 'B2' door was not working. ~~~~~ 3551 TC reported one saloon lights near B2 door not working. CE: T222(3551) check n found B4 saloon light not working.  3551 faulty B4 saloon light replaced & tested - OK. Koon PL 44934