F150 gas guage won't work

[rstevens]

I have a 2006 Yamaha f150 4stroke with 150 hours on it and the gas gauge always reads full. I replaced the sending unit and it still reads full. All the other digital gauges work. Any ideas?

[boats.net]

Don't know what gauges you have.
Remove sender from tank and check that it will read all ranges.

[rstevens]

I have the square digital Yamaha multi-gauges. The sending unit is brand new and hooked up black to black and white to red.

[boats.net]

The pink wire from speedo should be connected to pink wire from fuel tank sender and black to black, check settings in speedo are set for ABYC US sender.

[rstevens]

ok, how do I check to see that it is set to ABYC? I don't have any Yamaha literature other than what I can get online.

[boats.net]

Here is manual
Command Link Installation Guide.pdf

[rstevens]

I went through the settings and the gauge was set to USA. When I changed it to Europe or Yamaha the readings changed. Set to USA it still reads full all the time. If it helps, my gauge background lights don't work.

[boats.net]

May still be wired up wrong or bad or mismatched fuel sender.

[rstevens]

The fuel sender is new and matched up to the original. It is wired black to black and white to pink. I am stumped.

[99yam40]

He said pink to pink and you have said white to red and now white to pink, maybe that could be your problem