I have a 1997 F150 that I just noticed recently a drip or two of water directly under the radio on the rubber mat in the cab, generally after it rains. But not after every rainfall. I have had the windshield replaced some years ago but had the windshield company check it out and they said it looked OK. Any other ideas would be appreciated. Thanks in advance!

 

What you need to do is lay both front seats back all the way, lie on your back on the seats and have someone spray a water hose on the truck, starting at the cowl area, giving it a good soak, and if no leaks are present, move the water up the windshield.