Memory says that there is no neutral safety switch on the clutch pedal, only the cc. That's the way it was on a stock 1986 190D with factory 5 spd. Also same on a 1987 300E 5 spd conversion that used 1986 300E pedal cluster.

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Hanno
'79 6.9 Sold (after 27 years)
'83 280SL, 5 spd.
'94 E320 Sdn. 5 spd conversion
'02 E320 Sdn.(on loan to mom!)
'87 300E (5 spd. conversion) Sold
'05 E500 Wagon