74 Duster Dash light swap.

The WhiteFace gauges come with instructions on how to separate the instrument cluster so they can be installed. You'll also need something that will blow hot air, too. You will need to remove the instrument cluster, so I understand your anxiety.

1. Disconnect the battery.
2. Remove the three bolts that attach the steering column to the car. You need to be able to lower the column, not remove it.
3. Pull the knob off of the windshield wiper switch. Carefully unscrew the nut underneath. I ground down a dud socket so it engages the "teeth" in the nut.
4. Grope around until you can find a little knob with a spring under it on the dash side of the headlight switch. Press the knob and pull the headlight switch knob and shaft out. Some of the nuts are cut for a flat tip screw driver. Remove the nut.
5. Remove six screws that hold the instrument cluster into the dash panel.
6. Pull down the steering column. Begin to remove the instrument cluster. There are four connections to the back of the instrument cluster.
a. There are two terminals on the back of the Alternator gauge that need to be unscrewed. Pliers needed. Remove the nuts and the wires that are on the terminals. Pay attention to the terminal of each wire.
b. The speedometer cable is secured with a snap clip. Squeeze the clip at the appropriate place and pull the cable free.
c. The pigtail of wires plugs into the printed circuit board near the center. It can be tough to remove. You may be tempted to take a screwdriver and pry it out. Be careful. Cracking the circuit board may render it non-op.

At this point you should have a complete instrument cluster assembly in your hands, less headlight and wiper switches.