After a re-frame over winter I'm just putting the loom back in. This wire seems to be the only 1 I don't have a photo of where it went and its the only 1 I can't seem to find!!!
It comes off the same bit the fuel pump wiring is and has a ring terminal so I'm sure It's an earth but where did it originally earth to?
On my bike, the BLK/YL wire attatches to one of the fule pump mounting brkt bolt holes; bolts to frame.
Took a pick as my bike is in surgury at present.
Loaded up a pic called wir_pic to junk stuff on gallery.