If it's any help I took my sender out of the car and took the following resistance values; Full:16; 3/4:45, 1/2:60, 1/4;110, Empty:270. Full and empty were easy to take as it is the limit of travel but intermidiate readings were more difficult as the float moves through an arc so I wouldn't take the values as gospel. Need to add that I appear to continue with duff readings at the fuel gauge and have given up any more investigations for Christmas. Rick