[RestoCreations]

Ok, i am revisiting this problem now that i have the tank dropped and the fuel lever sender out of the tank.
The sending unit appears to have come precut from Centroid and must be custom ordered by Kirkham for their tanks. It does not have any adjusting screws on the top and it is sealed.

Again, the sending unit has 12 volts at the POS, #1 terminal, the middle or #2 terminal is the ground, and the 3rd, #3 terminal from left to right is for the sending unit. On the Smith's Gauge, i have the number 1 terminal connected to the sending unit wire, the #2 terminal is where i have the fused 12 volts attached to, and the #3 terminal is attached to a good ground.

The tank sending unit reads 5.0 volts when dry and out of liquid, when is should actually read zero, and it reads 5.0 volts when submersed in liquid. So, i assume that there is something wrong with the sending unit. However, if it reads 5.0 volts to the sending unit wire, then why does the fuel level gauge go to just a notch past half full and then return to zero? Shouldn't it be pegged out at full if the the reading is 5.0 volts???

Even though i was told that the sending unit and Smiths gauge are compatible, i am starting to wonder. I should not have said OHMs are good to go above. I was simply told that everything was compatible when i ordered the sending unit.