Stu, just saw this. I have an early 74 750 GT. Mine has a pair of those round metal indicators; the left one bolts directly to the clutch bracket; right bolts to M/C bracket. Left also has a headlight flasher, right the horn. Mine does not have a kill switch. I've had the bike since new so I know it's totally original.I'm in the process of re-building a 1973 750GT and looking for info or pics showing the original handle-bar switch mounting set-up for the Indicator/motor stop button for the (USA) Indicators Model. There are no screw fixing points as per the Left switch mount. I assume it mounts to the Rt Handle-bar??
Rgds, Stu Mac