1.) Remove steering wheel, and cover steering column to prevent scratching.
2.) Remove glove box door & ashtray.
3.) Remove dash panel above glove box. (There will be 5 or 6 nuts on the backside. Either 9/16" or 5/8" socket will work.)
4.) Remove instrument cluster: (Now the FUN begins!)
I always remove the heater/fan control panel first, so I can get my hand behind
the instrument cluster, as there are 2 connectors to separate, plus the speedo cable.
There are 5 screws on the front of the instrument bezel. After they are removed
you'll have a little slack to pull the instrument cluster towards you, depending on
how much slack the speedo cable allows. The speedo cable 'B' nut I think takes a
13/16" wrench (if it's not just finger tight). The connector for the W/S wiper switch
will slide off easily.
You should now have about 4 to 5" of space to reach behind the cluster, to separate
the 2 connectors. (They are held together by plastic clips, sometimes a PITA to get
apart.) When the speedo cable & the 2 connectors are separated, you can then
remove the complete cluster, with a little wiggling & cussing.
5.) If you car has factory A/C, you can now remove the A/C register. If not A/C, the
blanking panel will almost fall off.
6.) Remove the dash pad: First remove the windshield trim strips on the top of the dash
pad (6 or 8 screws). There are 2 studs at the left & right lower ends of the dash pad.
They are secured by nuts (3/8" socket if I recall correctly). There are also screws
along the top edge of the dash pad - remove them. Now the dash pad is not secured
by any fasteners - BUT - it's probably baked onto the metal dash structure after 40
years of sun & baking. You'll have to wiggle, lift, pry, cuss, but eventually it will
break free. If you're going to re-use the dash pad, USE CAUTION so as not to tear it.
If you're going to replace it anyway, less caution is required. But it's still a PITA.
The bezel is removed from the instrument cluster by first removing the W/S wiper square
knob with an Allen wrench. Then the screws on the backside of the cluster. Be careful of the plastic pieces that block the lighting for the turn signal lights & hi-beam light. When I have a cluster apart, it's an ideal time to freshen the instrument faces. I use dayglo orange on the pointers, 1/8" red tape on the speedometer arc. (This is also a good time to change over to LED bulbs.)
Can't help you on the 1/4 window trim - never had to do that.
Neil
PS - With the cluster removed, it's a good time to squirt oil down the speedo cable sleeve.