[Ford blue blood]

The rear quarter area under the window drains into the rocker panel and then out. Run the hose only on the quarter window so the water only goes between the body and the window, if the carpets get wet, well that is really bad news. Rust issues. Carefully pull up the carpet in the rear corner and look at the inner rocker. Best to remove the rear seat lower and upper, pull the interior quarters off so you can see all of the area in question.