Jim, the best thing to do would be to get a potentiometer (variable resistor) and connect it across the sender's connections.Twiddle the knob until it says empty, and measure the resistance with an ohmmeter, and then twiddle it till it says full, and measure again. >From these readings you should be able to re-wind with the correct length Best Wishes Martin #1458 jwit6@xxxx wrote: > Does anybody know the resistance values for the fuel gauge when full, and > when empty? > John Hurvey I know you rebuild these. I need to simply rewind mine and I want > to get it right. Can you help me out with the correct values. > > Thanks, > Jim 6147