link to photo

found this photo of exposed dash. the arrow is pointing to what I think is a check valve on the door lock line (maybe). Anybody else think that could be the case? If I can't get to this with just cluster removed, do you think I might have access through the dash speaker cutout, once speaker is removed?

another shot of it here... looks accessible maybe

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Andrew
Montclair, NJ
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1982 300D Turbo
120k
Petrol Blue Green