I don't know how far along you are on removing the panels but you really only need to remove the dashboard panel.
From there you could drop the line to the VIN plate that's behind the rubber cover. Then from the bottom of the scooter, run a metal coat hangar or any other type of flexible rod you can find up to the VIN plate. I find this to be the hardest part. Once you get the coat hangar up to the VIN plate, tape the wire to the end of the coat hangar and slowly pull it back out and voila!, you have your wire run.
Also, I suggest mounting both of the gauges on the same side of the scooter because if you want to get something like a RAM mount later on to secure your Cell Phone to your scooter while riding, it won't block one of the gauges since the best way to mount a RAM mount on a scooter is to get the ball that attaches to the mirror stalk.
