Greetings Jeric,

Don't remove the cluster to get to the vac switch, remove the kick panel instead because the valve is located on the side of the ignition switch and easiest to get to with kick panel removed. It will simply be a very small valve with two lines going to it. Two screws holds this jewel in place and the top screw is the most difficult to remove and replace. If you own a small offset screwdriver, this is the best approach on the top screw. Insure you test the valve properly before considering it dead. Also, there is a chance that dirt has gotten into it and has caused the o-rings to leak, so spaying wd-40 into the vacuum line ports and working the valve button a few times generally frees up the dirt, followed by a squirt of litium lube might fix your problem as well. Mine is still doing fine after a clean out and relube.

Charles