I've mentioned this before, but before I even thought of trying to get the original gauge to work, I gave up, and just use my Fluke meter to check fuel level. It actually works very well since it's so accurate using 10ths of and Ohm. You can calculate fuel mileage even on short trips. On a 17.5 gallon tank you just read the ohms, and multiply it by .583333. Tells you exactly the fuel level in gallons. Pretty much how they do it on new cars.

Last edited by 4100 Fire Truck; 02/26/2020 11:18 PM.