Thanks for the reply.
There were no batteries when I took the unit apart from what I remember. I have found one on ebay for about $100.00 and I think I am going to bite. I am hoping that the issue is with the cluster itself and not something else. It doesn't seem to be a short because the guages have no activity for about 15 seconds and then they go bonkers. Also the "clicking" sounds like it is coming from the instrument cluster itself. I am guessing there is a bad capacitor on the board inside the cluster.