Guess I will have to get another whole gauge cluster....those gauges will not work, not matter what I do....so I'll get another cluster and swap.....
it's just odd that it's all 4 like that

 

Gotta be a failure within the cluster itself. Unfortunately, so far as I know, wiring diagrams for the cluster itself, simply don't exist anywhere....

 

I see lots of clusters still on ebay.

 

Update.....
I bought a used cluster at a local salvage yard, swapped them, and everything works perfectly now except gas hand.....but this gas hand reads past empty....is it float controlled?
thanks

 

Yes. Now the fun, the pump, the filter and the float are all one unit and in the gas tank.
Most remove the bed or unbolt it and lift one side to get at the tank. If you do that protect the opposite side corners from scratching on the rear bumper. Or you can drain it and lower the tank.
The float arm should point toward the front of the truck when it is positioned correctly. Otherwise it hits the inside and doesn't work.

 

Good news! Yes the gauge works off a float inside the tank as 94 said. The pump, sending unit, and float are all inside the tank. It seems your pump works fine but the sending unit and/or float could be screwed up. As 94 suggests, you can inspect the parts. Lifting the driver's side bed is the easiest way. 8 bolts holding the bed to the frame, unscrew filler neck from behind the flap, remove spare tire crank tube from behind license plate, detach tail light harness, jack her up. Not hard. OR, just use your tripometer as a fuel gauge. Also, your gas pump dash light should illuminate when you're down to about 2 gallons (that's on a separate circuit). If you choose to replace your fuel pump assy, return here for recommendations. Many pumps suck so you want to get a good one.

 

I forgot to mention if the sending unit isn't working well there is a thread in the FAQ section about doing that. Also be careful of the overflow valve. It tends to be very brittle at this age and breaks easily when you try to remove it.

 

Just for grins, I replaced my fuel pump a few years ago. It died and I had AAA tow it to one of their shops. They checked the fuel pressure and determined the pump was kaput. They quoted me more than $500 to replace it. Uh, no. Had AAA tow my truck home. Spent I dunno, maybe $120 on a new Delphi pump and did it myself. $300 and I woulda paid it. Not $500.

 

The float is on the fuel pump. However, it's also possible you have an open circuit in the wire to the float. If it was shorted, it would read full and then some.

 

Why are these two not plugged up....where do they go, thanks in advance guys