I have a 1984 GL wagon and the fuel level warning light doesn't light, though the bulb has continuity. What triggers it? Is it in the float assembly? Thanks for any help. Have a great day all!

How do you know it doesn't work? Have you actually ran completely out of fuel? They come on with about 2 gallons left.

On my 1992 there is thermistor that is located in the sending unit.  The thermistor is most likely dead.  We had few threads on them here on the forum but I do not remember if anybody has ever fixed them.

 

Mine died many years ago.

 

Sam

Mine used to come in just below E, but since I borrowed out my car and they ran it out of gas. It now fills waaay above F and MY light comes on just above E ???? at 240miles per tank +/- 2 gallons...

I have a 86 Brat. the light comes on after I have been driving on E for a while. When the light does come on I get nervous and head to the gas station. You could drive on E for while to see if the light comes on. Carry a gas can with gas.

Paul

Would a '84 Brumby/Brat have one of those warning lights?

yep it should. Most never get that low to ever find out. My friends dad ran his completely empty just to test everything. That is why I know it comes on at 2 gallons left. So if my Brat or Gl wagon gets 30 mpg, I decided to say for safety it gets 25 mpg, when the light comes on, I have 50 miles before I'm dead in the water. That is of course driving like grandma. 

I'm not sure if mine work. I have only very rarely let one get that low.