TC reported after changing end that in car 1543, 3 saloon light at A1, B1 and B2 doors faulty. In ca r 2543, 01 saloon light near A2 faulty. ~~~~~ TC reported after changing end that in c #1543-B1 & B5 saloon light ballast replaced and tested ok. #2543 between A4 & A5 connector having poor contact and loose cause 7 saloon light on A side not working.Remove connector and reconnect ok.All saloon light working except A5 found ballast  faulty.Replaced and tested ok.#2543 & #1543 saloon light all ok. Done by Zulq/Saini/Haslan. 09/02/22