Sounds like a short somewhere... did it rain ? Did you drop your coffee ? Seriously though, it feels like a short, whereas the current is passing through, but with resistance such as a liquid may provoque, since the lights are dimly lit. I would look for a bare wire somewhere.
That would be a hell of an investigation given the inexperience I have. But that is what I would do: give a hard look at electrical wiring I can see. It could even be coming from within the steering column. Or could it be that water went in the ignition key hole, carried in by your key ? Now I think I'm stretching it.
Replug the bat, and if all is good, then the water is dry.