Had been out in a bad rain storm doing some highway riding. All was fine till the next time out. I had the same issue, N light and the key light. I rode a day in warm weather it that issue then it went away. I had removed the wiring from the neutral switch and placed some dielectric grease on it in hopes that would prevent it from happening again.
I had called the dealer as i was going to bring it in and was told the switch is sometimes bad which causes that. Warrenty if so however the light went out during the following ride with warm weather so i have just chocked it up as water causing the switch to arc out.