I went into my BMW library and found a wiring diagram with numbers and wire color key in a Haynes Manual.
58 = Gray
56 = Green White
30 = Red
15 = Green
I guess this why I keep different manuals ( Clymer & Haynes ). I should of looked deeper before posting.
John Henry Balzer III
I don't have any electrical diagrams with me at the moment...the only thing I know about on-line is here:
http://www.omnilex.com/public/bmw78/78r100wire.jpg
It's for the '78 model. Lower left corner is the ignition switch. It doesn't show terminal 15 though...sorry.
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2