dash problem

[Deamers87ford]

i have a problem with my gas gauge reading how much gas is left on my 87 bronco II so i took apart everything apart and i put a test light on my voltage regulators on my cluster on the dash and it blinked any idea if it should do that

 

[snake]

If the fuel guage is the only thing not working in the cluster the problem is likely NOT in the cluster... most common problem is the float in the tank sinking...