Battery runs down, ignition off while setting three weeks

I watched the 2CarPros video on troubling shooting drained batteries and it was very helpful. Here is the problem:

the battery runs down with ignition off while setting for three weeks.

I recharged the battery and the car started okay. I checked battery voltage with my voltmeter and engine running: 14.5VDC so the alternator is charging.

The car has three fuse
elay boards so I removed each fuse or relay independently while measuring current flowing into the negative battery terminal with my current meter. Current continued to flow no matter which fuse or relay was removed. The ignition was off.

Another way to see this is to remove the current meter and momentarily remove the neg terminal then make contact and a small spark will jump negative cable to terminal.

So this tells me the battery is being discharged with ignition off by some device in the electrical system. By removing fuses and relays I was unable to find this device.

So how much discharge current is normal with ignition off in my car?

Thanks,
Gary