Fuel Tank Sending Unit

Well last weekends work was not a waste, last night I checked out the resistance and all looked good. I got about 192 ohms from the sending unit and once I plugged the connections back located near the tank under the truck, I checked the gauges and it was reading 3/4 of a tank. Drove around, went to the gas station and filled up, and now I can see, I have a real full tank of fuel. I ran out once, and believe me, I don't want to do that again, cause it took me a while to get it primed and I ended up using a half can of WD40 as my primer to get it started.

Discovery info: I figured it out, Since a empty gauge means an open or high resistance, the full gauge must mean very little resistance. And I tested the old unit and it was still working. I have a feeling that there was a short on the last cable clamp next to the sending unit since it was crushed and was corrected before re-installing the tank.

Now this weekend I just got to get the wiring completed and then maybe next week If I have time, I will take it to the A/C shop to get the hose fittings installed and system charged, oh, one more thing, I need to change out the compressor, don't want to take a chance that it too was bad.