I don't think he's saying that he knows for sure if it'll work on the 999.
Without someone actually buying it (not sure if I want to do that now, without really knowing it'll work without messing up my dash) and taking the risk, there may be another way to get closer to the answer.
We know that the plug (999) has been used to support a IR receiver for aftermarket laptimers (post above), so that's a good sign.
Now, if we could find someone with a 1098 shop manual that could take a look at the wiring diagram to find out if the plug is wired the same as my 999 (see above post)....it does look like the plug connections are the same, just have to know the wires???
Anyone willing to help? Should be a market for these (or the DP units) to owners of older bikes. If IT WORKs!!!!