Weird Electrial Issue

[j.haffly]

Ok...on my way to the train station this AM....turn a corner and the 'check gauges' light comes on....I notice that my battery gauge is pegged!  Turn another corner, gauge drops to normal and the idiot light goes out....I park and go to turn on the floorboard light...nothing....I turn the key, nothing....I'm thinking it's the connection at the battery....any ideas?

Jim

[pa2phx]

the second part sounds like it could be a loose or corroded batt terminal. the first part is odd. i would also check the connections on the ecm and the alternator.