Jim, One other thing about the original fuel sending unit. I can adjust the unit to make the light come on quicker or later and I can make it come on if it doesn't. I have mine and others adjusted to come on with about what you said. I tried to run mine as low as possible with out running out of gas and I put in 11.8 gallons. I like it that way. John hervey http://www.specialtauto.com/fuelsystems.shtml