1987 Toyota Corolla FX Chargeing issue

I have a 1987 Toyota Corolla FX that just refuses to charge the battery. I replaced the alternator and even took the brand new alternator back twice for another. According to the tests at the parts house all 3 alternators were good. I have checked wires, fuses, and everything else in the line of the chargeing circuit and cannot find the reason for it not chargeing. Does anyone have any ideas?

Robert

Check the charging system in the car.
With the car running, either have a shop check the system for proper voltage/amperage, or you can use a multi-meter to check voltage at the battery terminals.
Between 14 and 15 volts is perfect (no higher than 15).
New or not, I would bet the battery is defective.

Tried that. I get the same voltage on the battery when the car is running and when it is not running. I also put a known good battery out of my truck (which has an extra large battery for emergency lights) and still got no more when the car was running than I did when it wasnt running. The parts house has verified the alternator is good and is chargeing but I just cant seem to get it working when it is in the car.

Robert