you will find that the person you bought the car from had removed the bulb from behind the instrument panel so that it does not light up when ignition turn on (this is a common trick to hide electrical problems). if ABS light stays on when ignition switched on it means that the ABS is not working. was it lit before you changed strut? take car for a run and slam on the brakes and see if the wheels lock up if they do lock up the ABS is not working. take car to a good independant peugeot garage and good luck.
pete
April 2012