A little trick here , I have a power drain too.
Get a voltmeter that checks for current (amps).
Disconnect the negative side of the battery, make sure the meter test probes are in the amp socket in the meter.
Connect the black probe to the negative side of the battery and the red side to the disconnected connector. this puts the meter in series with the battery.
Check the current draw, pull a fuse one at a time, see which one drops the most current, the car does not have to be on.
Since it's draining while sitting, anyway.
I looked up the fuse in haynes book and found it fed the mach 460 amps.
I just disconnect the fuse when I'm not using the car. When it gets cooler around here I may look deeper.
I had replaced the battery too, and to check the alternator which you had done already - car off 12vdc with car on alternator running 14vdc approx.

 

A test light will work the same. Just hook it up in series and start pulling fuses untill it goes out. Make sure it's a chiep test light, cause the expensive ones are too sensitive and pick up unwanted current from radio clocks and so fourth.

 

Thanks guys. I'll check it out tomorrow and report back.

 

when you shut off your car do the radio presets get lost???If so the the all time power and ignition power are backwards(on the radio) creating the drain.If not do what Starcam says thats how you find a drain.....Its not the battery like other people said.You could get a new one but its gonna due the same thing!!!!!!

 

ooops. Nevermind