I recently purchased 2006 Acura MDX, just found out the battery drained when parked. Did the test as instructed in your tube, the fuse protected the brake light (labled as "stop"). I checked the brake light switch sensor, it works OK. I checked again with the switch pull out, and fuse put back, the drainage is still exit. Check the continuity of the 2 contacts from the pigtail plug, and it is positive.
Would you give me some advice what I should look at? the wire, or something else? thanks.
Similar thing happened to me with my 1999 Honda Accord.
This fixed it:
https://carkiller.com/scottykilmer/qa/where-in-the-brake-system-can-cause-battery-drain/#post-251481
Let us know if this fixes it or not!
Make sure to scroll to toward the top for the actual answer.
After several hours test and try. I think the problem is the ground issue. Because the brake lights is always hot, so it just picked up the ground failure drain. Now have to find the failing point.