Chevrolet Repair: battery dies after a week, altenator, alternator

Question
i was wondering if u would know what might be wrong with my car i put a new battery and some what new altenator on my car and i can start it fine but when its about a week the batterys dead  i thought it was my radio so i took it out thought it was my starter so i got a new one but it still does it if i jump it its good for a week but nothing more . it a 1985 monte carlo with a carborted motor no computer  

Answer
Basically your going to have to get dirty on this one. You might have a draw on the battery. The problem with fixing this one is your going to have to trace every wire on the car. If it had a computer I would say that one of your relays was sticking open allowing juice to flow over night. First thing to check is all the wires from the alternator to as far as you can trace them. While the car is running you should have 12 to 13 amps through the wires. If it drops below 11 it's no good. Best way to tell is have the car running and check the posts at the battery it the reading is low then the problem is in the wiring from the alternator to the starter if the alternator is fuctioning properly. But I would have to stick with the fact that the battery isn't charging like it should. You see once the car is running everything pretty much runs off the alternator. If it's not charging good enough or if it's bad the car runs off the battery and will eventually kill the battery. But if the alterator is good but the wiring isn't it will allow the battery to charge a little but not enough. Good luck because I hate chasing wires.