fuel sender question - wiring

[kgs365]

Used a new to me boat for the first time today 1997 Grady white 208 with 175 saltwater series Yamaha

Filled the fuel tank guage stayed on one bar

Grady white sender has pink and black wires

Yamaha guage has white and black wires

When I switched the pink to the black and the black to the white the guage went to full fuel bars?


What's the correct wiring?...common sense would say black to black and pink to white?

So the guage seems to work as it moved from one bar to full bars with swapping of wires....does this mean the sender is bad?....

 

[seasick]

Used a new to me boat for the first time today 1997 Grady white 208 with 175 saltwater series Yamaha

Filled the fuel tank guage stayed on one bar

Grady white sender has pink and black wires

Yamaha guage has white and black wires

When I switched the pink to the black and the black to the white the guage went to full fuel bars?


What's the correct wiring?...common sense would say black to black and pink to white?

So the guage seems to work as it moved from one bar to full bars with swapping of wires....does this mean the sender is bad?....

If you are saying that you connected the pink wire at the sender to the black wire at the sender and the gauge read full than the sender is bad, the gauge is good. Since the gauge reads one bar, the sender is not completely dead and it is possible that the float is stuck in the almost all the way down position.
If your tank is full or even close to full, you will spill gas into the bilge if you undo the sender now. You will need to burn off some gas.