Aux vs Main tank?

PDX-Boats

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Can someone tell me which bar graph on the square Yamaha control refers to the main tank vs aux?
2008 Yamaha F350s
 

Ky Grady

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Depends on which way your switch is thrown. Switch controls which sending unit the gauge is showing.
 

wspitler

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On my 2007 330 the left most bar is the main (aft) tank and the right is the aux or forward tank. I believe it is a function of the yamaha gauge setup, but GW usually makes left main. No switch on my boat.
 

Ky Grady

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Ahh,, I've got the old school gauge,, only shows one tank, controlled by the switch. My new gauges for the 4.2 will show both tanks.