I need to know the color of the wire going from the control circuit of the fuel pump relay to the ignition switch. I'm thinking it's the larger green wire with the dark stripe but I could be wrong. The reason I need to know is because I'm wiring in a switch to turn on the fuel pumps manually.

-green w/ violet stripe: comes from the start-run bus (uses the 16amp fuel pump fuse...i believe it's fuse #3 in the box).
-green w/ black stripe: leads to the fuel pump (and other associated fuel components)

if it's too difficult to decipher between the black & violet stripes, use a multi-meter...or find which wire leads to what terminal on the fuel pump relay:
#15 uses the green-violet wire; #87 uses the green-black wire (this terminal should have 2 or 3 green-black wires stuffed in it).


I actually don't know much about wiring...but I did sleep @ a Holiday Inn last night ;) : http://bmw320i.com/library/PDFfiles/ETM.htm (bookmark it, download it, love it)