(see attached picture).
Found it loose in my 190E 16v and have no idea what it is .

One single-pin almost coaxial-style connector attached to a standard two-pin connector. That's the seat position handle at the top of the photo.

I measured a voltage at it, when you switch the ignition on it briefly goes to 12v then back to 0v. Oddly, it does not do this if you disconnect the fuel pump relay, suggesting it's related to the engine/fuel system but that may be just a red herring. The wire goes off up behind the dash.


Russell

Attached Thumbnails

 

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190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg

Oxygen sensor wiring!

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

__________________
190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg