Lots of info on these issues in the archives. Just a few of the threads that may help:

Help! Fresh Air Vents, ilumination lamps? 87 300e

http://mbca.org/MBCA_Remove_dash_vents.htm

Headlight Switch night lighting

It may or may not be different on the 96, but this should give you a starting point.

__________________
John

2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)

Click to see 87 300E