well my test came up negative on the windshield, my next guess is that water is getting inside the door and coming out a hole in the bottom f*ck i don't know lol
I think you need to get some food and some drinks and sit there when it rains with your truck stripped to see where the water is coming from.
did that already, tore the interior completely apart and ran the hose over it while i sat inside and watched
What you need to do, is take all the interior out, then put the hose INSIDE the cab, and see where it drains at
This is what i just finished up and thought i had the leak fixed BEFORE soaked the carpet in degreaser and carpet cleaner then pressure washed it stripped all the old padding off the back and laid in some new ordered new door seals passenger side had some rot so did a temporary clean up cleaned up and put back together with some new floor mats
made a quick antenna mount since the toolbox is off, it'd probly look better if it weren't a 4ft whip
here's my latest project, there not mounted yet, should be tomorrow, they're super comfy, the sides are wide enough to wrap around my back and the driver seat is all power and since the bench had power lumbar, all the plugs match, so all i gotta is plug it in, gonna order some saddleman covers for them and build an armrest console, thinking about maybe a cooler with a drain plug? haha, and a sub since i finally have the room for one