[Airdirect]

Ok fellow Heavy Haulers, I need help locating a correct fuel sending unit for my truck. I purchased a universal unit, adjusted it according to the instructions, it shows full regardless of fuel level. My original unit had become intermittent. I have confirmed the gauge works correctly, when the gauge sending unit wire is open, gauge shows full. When shorted to ground it show empty. I believe the universal unit I purchased works on different resistance values than the original. The original unit is 0 to 100 ohms. Below is a snapshot of the line build sheet, factory option list, and tank serial number tag. Any help would be appreciated.