It is definatley the speedminder. I can make it buzz by simply hitting the bottom of the steering column or shaking wires around up around the dash cluster.

The issue is, what is the easiest way to take the cluster out so I can see what is going on back there?

Do I need to take my entire dash apart? I know this would be a huge undertaking. I did find a few wires and the end of a plug up there that has came unplugged and I have no idea what it is to or where to connect it because it is so cramped up in there.

Any ideas?