Ohhh! Toward the center of the pic? In the middle of those gears???

No wonder, I was looking at the outer case near those bearings....

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Thank you for all the help guys!

"Old Gretchen" <--1983 300SD w126 cali. emissions (so it says on wdw sticker)
LIght metallic blue with dark blue interior. Odo stuck at 160,500 mi.

www.handydo.joolo.com