TC reported while changing ends, that saloon lights not working at car 3507 'B1' door and car 2507 ' B2' door. ~~~~~ 3507 B3 & 2507 B4 TC reported while changing ends, that saloon lights not working. 3507 B3/2507 B4 Saloon light faulty.  3507 B3 & #2507 B4 saloon lights replaced. Security/function check - OK.  Isamuddin 44156