I pulled the cluster and took the cable off at the tranny. A plastic plug came out with it.

I lined the two grooves back up and got it to pop back in. A little fluid came out with the plug. The innards of that end of the cable also came out. Sort of a little washer and the metal cable. I got it all back together.
I tightened the connection at the speedo as much as my fingers could bare. Same thing. Speedo is loud.