ShankGT,
I don't know how long you've had your car but if you don't drive it regularly you'll need to connect it to a trickle charger. I have a European car and it came with one and I believe all of the American cars did as well. Failure to do so will lead to a dead battery and/or intermittent problems with the gauges after start-up. There are some related threads on the Forum which explain this issues in depth. I'd suggest doing a search to learn more about what has been written in the past.
Rob