Might anyone know a) if there should be some sort of trim cap on the bolt that is exposed through the firewall pad and located just forward of the main relay board (see photo) and b) if so, its part number? I don't see it in any of the parts diagram and I'm not sure what it's connecting to on/in the firewall.
Mine's been "open" for several decades but not sure if there was a cap that fell off or it's just "open". At least I've finally gotten around to cleaning it up (after the photo).
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