panel fuse question

[chucks70]

On both my '70 and '72 the ammeter and temp guages do not work. Since there is a seperate temp. guage I just thought they were broke. When checking the fuse block on the Blazer because the blinker lights went out, the fuse marked pnl in the upper right corner was the only fuse that did not get power whether the was on or off. Should this have power and would this let me use my stock guages? Oh, the gas gages in both vehicles and dash lights all work.