Water leaks into the interior. Need help to diagnose &

[Ironforger]

Well I sealed that light above the rear window with RTV, but still I have water leaking into my cab. It's comming from the upper back somewhere. When it rains, the water drips down from up inside that corner body void where the seat belt roll is. Any ideas? Possible window gasket?

Also, I'm getting water coming in somewhere in the lower right front passenger side floor area. It's like somewhere in the corner sort of in front of the door opening where the floor slopes upwards.

Any suggestions or ideas greatly appreciated. This is a zero rust truck, and I'd like to keep it that way. I took all the floor mats out until this is resloved so they dont get saturated and hold water.

thanks!

[Ace]

The front leak is most likely cowl crack, possibly windshield.

[PToombs]

I'd bet on windshield. I looked at the cowl crack close on mine, and the water can't come inside. It goes down into the wiper arm area. I don't know what the technical term for it is.
How about that seam across the back above the window? Check that for cracks in the putty or whatever.

[Ironforger]

Thanks guys,

I'll investigate these things. I feel lucky to have a rust free 1st gen, and I'd like to keep it that way.

Any opinions regarding the rear window gasket? Could it be a likely culprit?