I3,

Remove the battery cable from the battery and touch the battery terminal to the battery post. See if you can see a spark which would mean there is current flowing into the car from the battery. The battery will need some charge in it to do this test so U might have to charge it first. Also, every thing must be turned off to do this test.

Next start removing the fuses and do the spark test after each fuse is removed. If you find there is no spark after a certain fuse is removed, That is the circuit that has the electrical leak.

If you have an ammeter, it would be more accurate to use than the ammeter than the spark test.

It possible that the battery is bad, so you might check that first.

P E H