well today i get home and the car wont start i look at every thing and battery is old and dead. i go and buy a new one and wen i put it in the lights turn on and everything is good but wen i go to start it everythin dies so i go back out side take the battery out then i put it back in and everything turns on i go to crank it and it dies again but now for good theres no power to anything i tried everything nothin works please help oh and its an 89 turbo