keystone bullet premier, tank question

[keystonedwildlife]

as the title,

I have 1 black tank and 2 gray tanks. On sensor panel it shows black 1, gray 1, gray 2. My question is does anyone know what goes to what?
Black is obviously toilet. But what goes to the 2 grays? Does my kitchen sink go to gray 1 or 2 along with my bathroom sink? I also have an outside kitchen sink just fyi. Thanks

[chuckster57]

Empty the gray tanks, shut the drain valve and then start running a faucet. Watch the monitor panel for any change and you’ll know which tank is which for YOUR trailer.

[wiredgeorge]

Originally Posted by keystonedwildlife

as the title,

I have 1 black tank and 2 gray tanks. On sensor panel it shows black 1, gray 1, gray 2. My question is does anyone know what goes to what?
Black is obviously toilet. But what goes to the 2 grays? Does my kitchen sink go to gray 1 or 2 along with my bathroom sink? I also have an outside kitchen sink just fyi. Thanks

Might help to put together a signature with year, make and model of your camper and same for your tow vehicle. "Premiere" is a model line with many floorplans. Do the same in your profile. This info is critical for contextual answers.

[skids]

Mine is a 2019 Keystone Bullet 248RKS. There is only one black tank and 2 greys. The monitors go front to rear with respect to the trailer. There is one black tank (No. 1) and the other black on the panel (No. 2) is not use. There are two greys, forward (No.1) and Kitchen (No. 2).