Somewhat urgent question about dual gray tanks...

Looking at floorplan kitchen is center with bath rearward of kitchen.

And all on 'curbside' so drains go across rig to tanks

Forward tank s/b kitchen (galley/AUX)

With grey/back rearward.......

Monitor wires connected wrong
Swap grey & Aux

Now that tank is empty.....open that drain valve again and run water down sink. (Fill sink then drain it---leave faucet running)

Does water run out of the drain line/valve???
YES.....
Monitor wrong