Mine does that all the time. Many have mentioned it's in the ignition switch. Turn it off and on a few times and it will most likely start working again.
Or, stick a tooth pick in the ignition to let some air in so it dries.
Must be a queer eletrode running around
Never had a issue with lightly dowsing the instrument cluster under a car-wash pressures; though I wouldnt blast for as long as to dislodge the dirt dobber nests; your beast had collected.
Time to lift the tank, apply the prop wand, get a tube of dielectric grease and open up all the plugs and molex connectors and fill 'em up with dielectric.
That is, the very first thing I did when I bought my 06, in '06.
When you get yours, you will see. When you sit on it, it will be to the rigth of your lower gas tank at the bottom, it comes in it's own little snap on holder.
To do just about anything on the Roc you have to lift the tank. The prop wand, in the afore mentioned location, is inserted into the hole where the front tank screw goes into and the other end fits into the bracket on the front of the tank. Just make sure that you've run down to about 1/2 tank or you will end up with fuel on the floor.
Don't listen to these nerds. The prop wand is for when you get around RUB Harley riders and they start rapping on the throttle, annoying your ears. You simply pull out your prop wand and wave it over them whilst tapping your toes on the footpegs 3 times. It causes them to get the sudden urge to park and suck the chrome off their pipes.