I wouldn't think that the position on the HT lead is critical.
The illustration used for the RX2n implies four wraps around the HT lead - you may wish to try more than this.
Have you tried taking the feed from the Grey wire?
I have it wrapped around a few more times than four. I actually am using 18g wire and I stripped the wire where it wraps around the HT lead. That way there is less resistence.
As far as the grey wire I have tried it three diffrent ways. I first tried to simply connect the Koso wire directly to the grey wire, no go, tried connecting just the koso directly to the wire wrapped around the HT lead, no go. Finally tried connecting all three, still a no go.
I will say that there was some movement once, and I have zero explanation for it.
I just put the wire in around the HT lead and connected to the koso.
When I started it, the RPM gauge actually showed some life. Granted it only showed that the bike had 0-500 rpm, just lighting up the first box.
I gave the bike some gas and it jumped up, not where I would expect the RPM's to be at, but It has been a while sense I have actually seen my RPM's and can compare it to the volume of my exhaust. While I was doing this I held it at about 3k, while holding it steady for some reason the RPM gauge shot up to 6k-8k RPM without me moving my hand. I turned it off and stopped testing because my wife was complaining about trying to get the kid to sleep lol.
After turning it off I decided that I had it wired correctly I just needed to get the settings correct so I made everything permanent. Once it was connected and wires tucked back into the bike, I saw no signs of life again. Now that I wrote all this down I realize I need to recheck the connections, any other advice is more than welcome.