The brown wire is a ground. I have forgotten where is goes. Look around, I am sure you'll see where it attaches.

The tail light housing unit can be taken apart. There are a series of integrated clips, part of the black plastic unit that hold the metal "bulb holder" in place.

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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)