Re: Pionnier
What model 5th wheel do you have. I have a Cyclone. One grey tank is for the shower, the other is for the kitchen sink. Not sure if the bathroom sink goes into the first or the second tank? Some Cyclone models also have a bath in the garage. I do not. Not sure which tank the garage bath is hooked up to. Do as Jim suggests. Open the faucet in the kitchen, let it run, turn it off and go open the #1 tank and see if anything comes out. Then open the #2 tank. Repeat for the bath sink and then the shower. That should answer your questions. Or the alternative is to call Heartland Customer Service, give them your Vin #, and ask them.