Hot damn, you just saved me a pile of hunting around in the FSM.
I've had my tach drop out after hitting some water on my last couple of wheeling trips (never happened in the past, but I may have been in more water these last couple times), now I know what's going on. It's never happened to me due to heavy rain, but then I have the rubber splash mat underneath.
I'll have to get a closer look at it this weekend and give some thought to a splashguard just for that...
Thanks!
Rob