This pic was taken under the right-side dash looking up and thru the glovebox area. I can’t gurantee that the cowling isn’t a source - but I worked hard a decade ago to seal that area. I butchered my firewall to gain access to the cowl area. I removed the pile of debris, replaced the cowels, and coated everything with fiberglass. I also put a stainless steel screen under the vent (in front of windshield) to prevent further contamination by leaves, etc. I’ve had to keep the car under cover for over 10 years because of this leak and I really need to fix it before I want to drive in the rain or park the car outdoors. This pic eliminates the windshield wiper source. Not sure what else it tells me.
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