ok this is first winter for me and my 2000 gt ,the car is sitting in garage with the battery disconected ,so after 3 weeks off not starting my car ,i finaly did it this weekend ,so what i did i connect the battery and i went to start my car i turn the key on and all my guages went all way to the end and back down again so i quickly turn the car off ,when i started the car again it was back to normal ,can someone explain what was it ,why they did that?is it gone happend again when i go start up my car ?