(although a side note* when I opened up the housing there was an extra wite not connected to anything that was taped at the end, Red strip on Black. I looked at the wiring diagram and couldnt' figure it out.)
That is the same as my starter switch (76 CB750K)
Originally the black/red stripe wire went to the 7amp headlight fuse and then to the headlight
The black wire should be the 12V power wire
The yellow/red wire goes to the starter solenoid.
TheĀ green/red wire on the other terminal of the solenoid goes to the Clutch and Neutral switches.
If the black/red wire is not connected and the headlight works ok, then someone (usually the elusive PO) changed the wiring before you got the bike.
Good Luck - tom