1995 buick lesabre car dying, electrical problems.?

[Ricky D]

While driving down the road the battery light came on then the abs light then the check engine light then car shut off. Thought it was the alternator replaced it worked about 3 weeks then the battery light came back on... same problem happend again so then got a new a battery now the battery light is back on! only vehicle I have please guys I need some help.... thnks