96 lesabre power is draining?

I have replaced the battery but something else is draining the power from my car. Anyone knows what that can be? A bad relay?

You'll need to disconnect negative battery cable and test with voltmeter to see how much of a drain you have. (You will want to wait a few minutes before checking so all the computors and such go to sleep) Then you will need to remove fuses until you find the system with the parasit drain.

good luck