Wire colour codes and plug locations?

Interestingly enough, this post was just over on the zroadster forum, by Tim Cullis:

If you are trying to decypher BMW wiring diagrams, it's rather essential to realise that:

BL=blue
BR=brown
GE=yellow
GN=green
GR=grey
OR=orange
RT=red
SW=black
VI=violet
WS=white

Some advice I received a long time ago from wiring guru Ron Styger of Unoffical BMW fame:

In general, a solid red wire is hot at all times.
A red wire with any color stripe is hot at all times after a fuse.
In general, a solid green wire is hot in run and start.
A green wire with any color stripe is hot in run and start after a fuse.
In general, a solid violet wire is hot in accessory, run and start.
A violet wire with any color stripe is hot in accessory, run and start after a fuse.
In general, brown is ground.
Gray with a red stripe is dimmed lighting.

I can't vouch for any of it myself, but Tim generally knows that of which he speaks. Hope it helps!

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Ciao,

Spokey