Ford Ranger / B-Series :: 1992 - Passenger Side Rubber Floor Mat Has A Puddle Of Water After Rain

Whenever it rains a substantial amount, like all day I go out to my 92 Ranger and get in and notice the passenger side rubber floor mat has a puddle of water on it. I look under the floor mat and only the center of the carpet there is wet. I see it's getting the edge of that side of the headliner wet and ruining the new headliner had redone. I didn't realize there was water leaking until I got my headliner redone and put back in. It very well could have been leaking causing the headliner cloth to all tear. It's wet along the top passenger side where the grab handle is and the plastic trim. I thought it was the rain gutter on top of the roof so I put in some black silicone and some of it stopped but not all.

So I thought it was still leaking at the front corner so I put more silicone in. Don't know yet if that was what it was for sure but I'll find out tomorrow because it's raining pretty good right now. But just in case where else could it be getting this much water in. If you go through a carwash, or hose it down for awhile, or even drive while it's raining bad it won't get water inside. I'm not convinced it's the rain channel 100% because on the driver's side the putty filling the rain channel on the roof looks worse than the passenger side and there's no water coming in on the driver's side. There is no water coming in the back or on the back carpet or headliner.

I don't see any evidence around the windshield. I can't understand why only the middle of the passenger side carpet is soaked and not the top or under the seat, unless it's just soaking through the rubber floor mat and not drying out. It's getting so frustrating because I can't visibly find any evidence, I have to wait until it rains and then I can't see why it happens. It's ruining my carpet and my new headliner. I want to replace the carpet but want the leak stopped first. Where are common trouble areas on these 92 Rangers for water leakage?