A simple tutorial: 74 Duster Cluster R&R

Good job! There are only a few things I would add. Before you start to disconnect the wiring off the back, spray everything real well with WD40 or similar. Take care when pulling the cannon plug off the circuit board or you may pull a pin loose. This is especially important on the '67-71 Darts. Check all the gauge nuts to make sure they are clean and tight before you reinstall. On the switches, some earlier models use a set screw on the wiper knob. Also they are held in with "nuts" not washers. Usually it's best to pull the light switch all the way on, then push the spring loaded button and pull the knob out with it's shaft.
Thanks, Mark