Back again, this time an electrical issue. The gas gauge and temp gauge do not work in the instrument cluster. The tach, speedo, and all indicator lights work properly. I have checked the fuses and have been checking the wiring throughout the car and have not found any breaks.
I also tried to remove the instrument cluster from the dash by following the instructions in the Haynes book to get to the back to see if the wiring is ok but have had no success. Cannot figure out how to remove it, it is bigger than the openning! Cannot see the back of the cluster from underneath as well.

Help?