Splitting Fuel Sending Unit Wires

[Richard]

It might work by inserting a diode in each lead from the gauges before they are tied together and connected to the sender. While the diode has a lot of resistance one way and very little the other way. I am thinking the small amount of resistance the diode has in the way it flows would not really affect the gauge reading enough to see. Not an electrical engineer so what I am proposing may be hog wash? Sure there are smart people here that could shoot me down or confirm my thoughts.