On occasion I get random emails with questions about past E36 DIYs I wrote. I am posting them here so the next time I'm asked, I can just point them to this link.
E36 Conversion to 18-Button Onboard Computer (OBC):
18OBC DIY 1of2 - BMW E36 Conversion-Upgrade.pdf
18OBC DIY 2of2 - BMW E36 X1071 Harness Wiring Schematic.pdf
E36 Cruise Control Retrofit:
BMW E36 Cruise Control Kit OEM Instructions.pdf
BMW E36 Cruise Control Upgrade - DIY_v.2.pdf
E36 Rear Power Vent Windows:
OEM DIY E36M3 Rear Power Vent Windows Rev.1.pdf