I'm actually experiencing a similar problem. Only my car never went dead. I swapped out a battery i had in it for a stronger one, and now my tach/econometer dont work. However, when I turn the car off the tach needle does jump and go back to zero. Any ideas??
-There are two undeniable truths in the tuning world; No matter how much money you put into that Honda, it's still a Honda, and no matter how little I put into My bimmer , It's still a bimmer.-