You proved that the gauge works. It should have gone to empty but there may have been some resistance from your jumpers.

Next check the sender with an ohmmeter.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.