Is it mechanical, meaning analog and not digital. I think that it will turn hours anytime the key is in the run position.
Like hotbeek said You can just give it the the proper voltage(probably 12, but check manual) and it will turn.
I don't know about yours, but my gaffirg will take an
awfully long time to return to zero.
[ 02-04-2002: Message edited by: Baja Daze ]