Glad you figured it out.
Normally for each tank the sensors are wired to an epoxy chip which contains a resistor network Then a SINGLE WIRE goes up to the panel.
If you ever have to do it again I can tell you how to do it at just the wire cut.
Short find one of the sensor wires.. Short it to ground and see which tank reads FULL on the panel.. Connect that wire to the sensor lead from that tank.
Same for the other tank(s)
Home is where I park it!