[rheavn]

Water leaks can really fool you as to where the leak is coming from.  Use some vinyl stucco tape to cover what you think is the source.  Then apply water or wait for the next rain and see if it remains dry.  If it remains dry, you found your leak--caulk it.  If it still gets wet, keep looking.  This method will keep you from caulking where it is not needed.

https://www.lowes.com/pd/Shurtape-Stucco-Tape/3063563

Good luck.............................