Success finally!

All of the trouble centered around that darn center post. I took the wires off that didn't really seem to go anywhere and put the nut on but things still didn't seem to work. Then I remembered I was told to tighten the center nut tight so I went back in and tightened it up. Put the cables back on and everything works perfectly, gauges and signals.

Thank you all so much for walking me through the process.