go buy a repair manual. My Haynes has a diagram in the back, plus tons of other how to's. They are only like $10 at autozone.
<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>