1992 Maxima battery discharging

An interesting electrical trouble. I've spent a few hours trying to find the source of a load that is draining the battery. About 50% of the time when I shut the car off there remains about a 3amp load which will completely drain the battery within about 24 hours. I have removed every fuse & relay one at a time & oddly the circuit draining the battery does not come after a fuse. Hmmmmm. Does that make any sense? The other 50% of the time when I shut off the car it's fine, a 0.3 amp battery drain remains. (probably just the clock or radio memory etc)

The battery is only about 1 year old & checks out ok.

Could this trouble be related to some of the grounding troubles I read about?

Thanks for any ideas.

An interesting electrical trouble. I've spent a few hours trying to find the source of a load that is draining the battery. About 50% of the time when I shut the car off there remains about a 3amp load which will completely drain the battery within about 24 hours. ....

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Could be alt voltage regulator. If I remember right, its got fuse in the blk box beside batt. Needs new alt: get original or one with lifetime warranty, remans will blow...

Dont think groundings cause this. Bad =missing gnd does blow the alt regulator. rRrepair...