i recently pulled a large tach out of a junked car, and thanks to brickboard installed it with no problem. At the same time i pulled a small clock out of the same car and can't get it to run right. It seems like the clock only runs when the key is in position I or more. Where do i need to run a wire from so that i always have power to the clock? Would there be a wire running from where the old clock used to be, next to the speedo? thanks a lot -Megan