Understood. Sorry for your bad luck.
The paperwork doesn't say what the rating is, just that the resistor limits it to full scale. It has brown, brown, black and gold stripes on it. According to the converter at digikey.com that means it's 11 Ohm 5% tolerance, and per post 3, 10 Ohms gives you full scale high. With it hooked in, the fuel gauge went right to full, not past, and the temp gauge went to almost all the way hot, but not quite. So once again, the test passed.
It's like there's nothing wrong, except that the gauges hate me LOL.