Unsolved mystery solved!! pt.2 Ford Transit Connect drains battery

This is part 2 of the worst diag ever. This 2016 Ford Transit Connect drains the battery after sitting over night. After getting the car back from another shop customer finds issue is still there but now it drains the battery after 3 or 4 days. It was mission to locate the source of the parasitic drain but we were able to fix it for sure.
Watch the 1st part of the diag:
• Most frustrating diag ...