When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
"Dash harness plug" is a bit ambiguous. If you have a factory manual, you have the greatest source of info. Perhaps all the info is not in one place, but it is in there.
In a 1995 manual, all wires are described in the "Harness Connector Faces" section of manual 2 for all parts of C200. You don't say what year your car is.