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The fuel gauges are very strange
I THINK the gauges rely on power to create the magnetic field for the gauge itself.
Remove any right side fascia from passenger seat, and then avionics bay cover.
You can reseat the edge connector to all the gauges from the avionics bay.
Its a stretch, but do able.
Alternatively, you can unscrew the gauge cluster sitting in the passenger seat.
Pull gently forward and play around until the PC edge conector on its bottom is accessible.
Inspect check the very old PC edge connector.
The PC for the gauges itself can develop surface corrosion where the tabs fit into connector
Take a pencil and burnish clean the PC contact points,
Hopefully that will do the trick!
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David Wartofsky
Potomac Airfield
10300 Glen Way
Fort Washington, MD 20744
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