I noticed 2 small holes on the left side of the handlebars. The end of the kill switch wire ended there so obviously there used to be a kill switch there. Doh

Both of my MK1s have clamp-on kill switches where the strap is bolted around the bar. I measured the bolt pattern and it was the same. I purchased an old style switch and wired it up. My newer style switch would not be correct.

Perfect fit.