Battery drain issue

That reading is not much. If you read that right, that is less than 1/10 V per reading

You need to re-check the original two points where you started. That is, the VR ign feed and the battery. This is because the bad connection CAN CHANGE. You may have wiggled something and "made" the connection.

Still another way you can do this is to connect the meter "as above" and watch it, while you wiggle the ignition switch connector and the bulkhead connector and see if it changes