Wiring for only one fuel gauge

I think I raised this before but can't find it in the search...

Can I have comments please. I plan to use only one fuel gauge in my car, so I can have other ones, but obviously want it to flip to the correct tank when I select it.

Would this diagram work? Any recommendations at all? Thanks
 

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dont think so as there is resistance over the solenoid and pump causing a variation. would it not be easier to use a relay that is activated by the tank change over switch to connect either rt or left tank sender information to a single gauge. This would mean using a similar relay as that already in use for the tank change over .the dash switch only changes the power source to right or left so if in reverse signal from sender right or left could be connected to gauge.
 
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