Well, the nice postman put 2 large jiffy bags through my letterbox today, one containing 3 metres of mogami 2893 and a neutrik plug (ordered a month ago but out of stock) and the other some assorted heatshrink (ordered yesterday lunch time from http://www.heatshrink-online.co.uk/ - highly recommended if you're in the uk and need any).
After a little cutting, soldering, fiddling and heating, a cable is made...
I was planning on trying to use a heat shrink end cap to make the Y split by punching a couple of holes in it, but i couldn't get them big enough or neat enough for my liking to thread the individual sides through, so i resorted to regular adhesive lined heatshrink, 8mm 4:1 if anyone is that interested. The cable north of the split has clear 2.4mm 2:1 heatshrink, which was only just large enough to comfortably thread the two wires through. I also got some black of the same size and shrink ratio, but the clear stuff felt more flexible before shrinking so i went with that.
Close up of the split...
For now i've hard wired it in, since i'll need to make the cable entry hole bigger to accommodate the SMC connector, and i want to do that on a pillar drill, which will have to wait till i go into the workshop next.
I'm quite impressed by the neutrik plug, nice and solid. What you can't see here is the innards, which has a bit that grips the cable as you screw the end in, so the solder joints are isolated from movement of the cable.