On my '67 GTR, there is a solid orange wire coming out of the LH handelbar switch, and same coming out of the main harness, and into the headlamp bowl. This wire is not shown on the GTR wiring diagram that I have. The harness is new from Richard. Maybe this wire is for the GTO?
Also, has anyone located a source for the small rubber boots that cover the ignition coil terminals? The only ones I can find are way too big, and are not shown in the parts diagram. Thanks in advance!