2018 Greyhawk Bathroom Sink

[Florida Ranger]

Is the bathroom sink drain connected to my Black tank ? In my previous Winnebago it was and it was a 31 ft Class “C”. Can’t tell by looking under Greyhawk.

[Grumpy]

Shouldn't be, JAYCO hasn't done that for quite a while that I know of. I've never had a rig since 1977 that was connected that way.

[JFlightRisk]

When your gray tank is empty, open that valve and turn on the faucet, and see if water runs out. If not, it's going into the black tank.

[CAG]

Mine isn’t.

[rmratte]

I have a 2016 and believe it is. When you flush toilet. You can hear it threw sink drain.