Tank level gauge is showing inverted values

[LittleSister]

This explains why the American sender is the other way around - the Yanks are naturally more concerned with measuring the amount of gas in the tank...

Nothing to do with `America. He's clearly got an Australian gauge!

 

[PaulRainbow]

I am a programmer, this is how we solve things sometimes. Easiest solution, least amount of headache.

OP I am not expert with fuel gauges, but something must be upside down or reversed. If the polarity can't be reversed, maybe the sender is just upside down?

Nothing to do with reversed polarity and you can turn the sender up any way you want, it won't change a thing. The gauge has a positive connection, the negative goes to the sender and from the sender to the gauge. The sender varies resistance, like a volume control does for sound. As the resistance changes the needle move. There are two types, one starts at low resistance and increases, the other starts at high resistance and reduces. The gauge and sender must match of the readings are reversed.

 

[DangerousPirate]

Maybe OP wants to measure the ohms and then take it from there.

 

[ylop]

If you keep the tank half full at all times it will be ok! Although philosophers will enjoy debating whether your tank is in fact half empty…

 

[PaulRainbow]

Maybe OP wants to measure the ohms and then take it from there.

Why ?

Please read some of the other 24 posts in this thread. Start at post #1

 

[chriscallender]

Some senders can I believe be flipped upside down in the tank and remounted to swap whether full tank position gives highest resistance or lowest resistance. Maybe worth checking?