drag-an-fly

Hey guys I'm having some problem with my truck it's a 94, 2.4 L 4x4 5 speed. The problem I'm having is that the gas and temp gauge don't work. I checked all the fuses, and the
Wires form the senders to the gauge are good. The speedo is working I have put power to the gauges and they do move. I think it's a loose wire some where cause it kinda works sometimes. So is there a way to check if the cluster is going out. Or is there a relay or something I'm missing. Cause I'm out of ideas. And I tried everything I can think of.