| Dunno, but I've just bought one off ebay for £30 + £4 p&p (see my post in the Market Place).
From what I've read, you wire it up to a voltage feed (two wires) and the tacho feed (1 wire) and you may have to wire it to a headlight feed (1 wire) too so that it detects when your lights are on and dims the LEDs, so only 4 wires in total.
Once you've done that, you then need to "program" the unit for your particular settings - min and max revs on the bike. I read an article where the instructions say you need to touch a control wire to an earth point to program the unit, but the writer wired it up to a switch instead to make it easier. Sounds like a good idea.
The only problem is mounting it, but I'm thinking it should sit on top of the idiot lights pod quite nicely, or maybe around the outside of the speedo? You could always buy a CF clock surround and mount it in that for the ultimate trick look...
When mine arrives, I might take some pics and write up a short guide for the website or Pronto.  | 
antonye
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