what would make a car shut off while turning the corner and not it wont start? on 2001 Buick LeSabre

2001 Buick LeSabre Limited car shut off while driving - turned the corner and it cut off. Cranks but wont start. change fuel pump/ and crank sensor. Still wont start/ now the right signal light will come on and flash when turning on the key but signal light is not on also right headlight will not work. could it be something in the steering column?

Asked by for the 2001 Buick LeSabre
sounds like electrical