I believe the sampler motor is located down in the dash close to the glove box area (or where it would normally be on dual air bag cars). The intake is above as described, in the overhead interior light, sunroof switches.

Haasman

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)