OK. I found the temp sensor, but it looks a bit different from anything I'm finding here (let me know if I am in error). The part that I thought I found is in the picture below (the attachment, which looks like what most other folks have). However, mine looks different. Mine looks like this:
http://catalog.peachparts.com/ShopByVehicle.epc?q=1989-Mercedes--Benz-300e-Cooling--System&yearid=1989%40%401989&makeid=63%40%40MERCEDES+BENZ%40%40X&modelid=6201%3AMBC|1507%3AED|10000013%40%40300E&catid=240909%40%40Cooling+System&subcatid=241011@@Engine+Temp.+Sensor&mode=PA
...however, it only has 2 poles instead of 3. What am I missing? All the replacements I see have 3 poles...
Anyone know where I can get this little bastard?