Fuel Gauge Problem

RedFish said

Nope a locating tang prevents installing wrong and or rotating the sender when the lock ring is rotated.

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I see. So I may have a bad guage then. I do have the solid state voltage limiter for the guages, but haven't installed it yet. I'll try that and if I still have a problem, maybe a new guage will be in order. Thanks for the help.
Frank