Ford Repair: A/C drain clog, side firewall, c drain

Question
I have a 2006 Ford Expedition that I feel has a clogged drain line because water is getting into the passenger floor.  The problem is I don't know where the drain is located under the vehicle.

Answer
can't tell you exactly-we unclog drains all the time and they are located on rt side firewall most of the time-we don't have a book or manual telling us where they are-we just raise them on hoist and look some are hidden behind shields/brackets or components you will just have to look. good luck